Hi, I am trying to install xen on top of Fedora I appended the following lines in menu.lst file title Xen 2.0 / XenLinux 2.6 kernel /boot/xen-2.0.gz dom0_mem=131072 module /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0 it gives the following errror Root-NFS: no NFS server available,giving up VFS: Unable to mount root fs via NFS,trying floppy VFS: Insert root floppy and press enter And when I press enter I see kernel panic (not syncing...) (I did not catch the rest) and it reboots. also i tried changing root=/dev/hdc since that is what my root is inside /etc/fstab. But then it just reboots on its own... Please suggest what to do..? Thanks Sri _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Also my /etc/fstab files looks something like this # This file is edited by fstab-sync - see ''man fstab-sync'' for details /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 LABEL=/boot /boot ext3 defaults 1 2 none /dev/pts devpts gid=5,mode=620 0 0 none /dev/shm tmpfs defaults 0 0 none /proc proc defaults 0 0 none /sys sysfs defaults 0 0 /dev/VolGroup00/LogVol01 swap swap defaults 0 0 /dev/hdc /media/cdrom auto pamconsole,ro,exec,noauto,managed 0 0 /dev/fd0 /media/floppy auto pamconsole,exec,noauto,managed 0 0 /dev/sda1 /media/usbdisk vfat pamconsole,noatime,sync,exec,noauto,managed 0 0 Thanks Sri ---------- Forwarded Message ----------- From: "Ramarathnam Sriram" <sramara@cs.clemson.edu> To: xen-users@lists.xensource.com Sent: Sun, 19 Jun 2005 17:47:04 -0400 Subject: Xen Install Hi, I am trying to install xen on top of Fedora I appended the following lines in menu.lst file title Xen 2.0 / XenLinux 2.6 kernel /boot/xen-2.0.gz dom0_mem=131072 module /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0 it gives the following errror Root-NFS: no NFS server available,giving up VFS: Unable to mount root fs via NFS,trying floppy VFS: Insert root floppy and press enter And when I press enter I see kernel panic (not syncing...) (I did not catch the rest) and it reboots. also i tried changing root=/dev/hdc since that is what my root is inside /etc/fstab. But then it just reboots on its own... Please suggest what to do..? Thanks Sri ------- End of Forwarded Message ------- Sriram Ramarathnam, Graduate Student,Computer Science Clemson University _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Ramarathnam Sriram wrote:> Hi, > I am trying to install xen on top of Fedora > I appended the following lines in menu.lst file > > title Xen 2.0 / XenLinux 2.6 > kernel /boot/xen-2.0.gz dom0_mem=131072 > module /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0This is direct copy from the user manual without modification for your own system I suspect.> it gives the following errror > > Root-NFS: no NFS server available,giving up > VFS: Unable to mount root fs via NFS,trying floppy > VFS: Insert root floppy and press enter > > > And when I press enter I see > kernel panic (not syncing...) > (I did not catch the rest) > and it reboots. > > also i tried changing root=/dev/hdc since that is what my root is > inside /etc/fstab.No it isn''t, according to your followup email: /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 You''ll need an initrd for the kernel to be able to mount this. Boot into native Linux and run as root (I''m assuming XenLinux 2.6.11 - substitute your actual version): mkinitrd /boot/initrd-2.6.11-xen0.img 2.6.11-xen0 (you may have to do "depmod -a 2.6.11-xen0" first) Append the following line to the Xen entry in your GRUB menu.lst module /boot/initrd-2.6.11-xen0.img Change the root= option to root=/dev/VolGroup00/LogVol00 James _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Please send replies to the list rather than only to me. Have you installed Twisted? James Ramarathnam Sriram wrote:> Hi James, > Thanks alot for your prompt response. > Now when i boot into my xen-linux2.6.11.10 kernel and give the command > xend start i get the following message > > [root@tfrc1 ~]# xend start > Traceback (most recent call last): > File "/usr/sbin/xend", line 27, in ? > from xen.xend.server import SrvDaemon > File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line 20, > in ? > ImportError: No module named twisted.internet > [root@tfrc1 ~]# > > Please suggest what to do. > > Thanks > Sriram > > > On Mon, 20 Jun 2005 17:01:36 +0100, James Bulpin wrote > >>Ramarathnam Sriram wrote: >> >>>Hi, >>> I am trying to install xen on top of Fedora >>>I appended the following lines in menu.lst file >>> >>> title Xen 2.0 / XenLinux 2.6 >>> kernel /boot/xen-2.0.gz dom0_mem=131072 >>> module /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0 >> >>This is direct copy from the user manual without modification for >>your own system I suspect. >> >> >>>it gives the following errror >>> >>>Root-NFS: no NFS server available,giving up >>>VFS: Unable to mount root fs via NFS,trying floppy >>>VFS: Insert root floppy and press enter >>> >>> >>>And when I press enter I see >>>kernel panic (not syncing...) >>>(I did not catch the rest) >>>and it reboots. >>> >>>also i tried changing root=/dev/hdc since that is what my root is >>>inside /etc/fstab. >> >>No it isn''t, according to your followup email: >> >> /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 >> >>You''ll need an initrd for the kernel to be able to mount this. >> >>Boot into native Linux and run as root (I''m assuming XenLinux 2.6.11 >>- substitute your actual version): >> >> mkinitrd /boot/initrd-2.6.11-xen0.img 2.6.11-xen0 >> >> (you may have to do "depmod -a 2.6.11-xen0" first) >> >>Append the following line to the Xen entry in your GRUB menu.lst >> >> module /boot/initrd-2.6.11-xen0.img >> >>Change the root= option to root=/dev/VolGroup00/LogVol00 >> >>James > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
You need to install the Twisted framework - make install-twisted in the Xen source 1distribution, or find packages for your distro, or get the code manually from http://twistedmatrix.com HTH, Mark On Tuesday 21 June 2005 15:03, Ramarathnam Sriram wrote:> Hi, > When i boot into my xen-linux2.6.11.10 kernel and give the command > xend start i get the following message > > > [root@tfrc1 ~]# xend start > > Traceback (most recent call last): > > File "/usr/sbin/xend", line 27, in ? > > from xen.xend.server import SrvDaemon > > File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > > 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line > > 20, in ? > > ImportError: No module named twisted.internet > > [root@tfrc1 ~]# > > > > Please suggest what to do. > > > > Thanks > > Sriram > > On Tue, 21 Jun 2005 06:48:20 -0400 (EDT), xen-users-request wrote > > > Send Xen-users mailing list submissions to > > xen-users@lists.xensource.com > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users > > or, via email, send a message with subject or body ''help'' to > > xen-users-request@lists.xensource.com > > > > You can reach the person managing the list at > > xen-users-owner@lists.xensource.com > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of Xen-users digest..." > > > > Today''s Topics: > > > > 1. Re: Stable VBD Types (Nils Toedtmann) > > 2. Kernel panic, unable to mount rootfs (Matthew J. Harmon) > > 3. Re: Kernel panic, unable to mount rootfs (Matthew J. Harmon) > > 4. Re: Re: Kernel panic, unable to mount rootfs (Yvette Chanco) > > 5. big sized applications in XEN virtual machine (Andre Kuester) > > 6. Re: big sized applications in XEN virtual machine > > (Fajar A. Nugraha) > > > > 7. Re: big sized applications in XEN virtual machine (Wim > > Coekaerts) > > 8. Re: big sized applications in XEN virtual machine > > (Fajar A. Nugraha) > > 9. Re: Xen Install (James Bulpin) > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Tue, 21 Jun 2005 00:10:33 +0200 > > From: Nils Toedtmann <xen-users@nils.toedtmann.net> > > Subject: Re: [Xen-users] Stable VBD Types > > To: mail@alexadranghi.com > > Cc: xen-users@lists.xensource.com > > Message-ID: <1119305434.3840.6.camel@crusher.takatukaland.de> > > Content-Type: text/plain > > > > Am Montag, den 20.06.2005, 18:11 +0100 schrieb Alex Adranghi: > > [...] > > > > > Thanks. Although this is relevent to what I''m wanting to do, what I > > > meant to say was using lvm snapshots as a way to reduce common files > > > from repeating on disk. I quote the LVM-HowTo as it explains it a > > > little better. > > > > > > "It is also useful for creating volumes for use with Xen. You can > > > create a disk image, then snapshot it and modify the snapshot for a > > > particular domU instance. You can then create another snapshot of the > > > original volume, and modify that one for a different domU instance. > > > Since the only storage used by a snapshot is blocks that were changed > > > on the origin or the snapshot, the majority of the volume is shared by > > > the domU''s." > > > > [...] > > > > We use the device-mapper for this. Works for us [tm]: > > > > dd if=/dev/zero of=/tmp/CoW1 bs=1M count=$CoW_SIZE > > dd if=/dev/zero of=/tmp/CoW2 bs=1M count=$CoW_SIZE > > > > losetup /dev/loop0 root_fs > > losetup /dev/loop1 /tmp/CoW1 > > losetup /dev/loop2 /tmp/CoW2 > > > > BLOCKSIZE=`blockdev --getsize /dev/loop0` > > > > echo "0 $BLOCKSIZE linear /dev/loop0 > > 0" \ | dmsetup create rootfs_base > > > > echo "0 $BLOCKSIZE snapshot /dev/mapper/rootfs_base /dev/loop1 p > > 8" \ | dmsetup create rootfs1 > > > > echo "0 $BLOCKSIZE snapshot /dev/mapper/rootfs_base /dev/loop2 p > > 8" \ | dmsetup create rootfs2 > > > > You should now be able to use /dev/mapper/rootfs{1|2} read/write. > > Only diff blocks to "root_fs" get written to "/tmp/CoW{1|2}". > > > > This way we boot >20 domUs off one root_fs (after shutdown we delete > > the CoW files). I have now clue how to do that with LVM[2]. > > > > /nils. > > > > -- > > there is no sig > > > > ------------------------------ > > > > Message: 2 > > Date: Mon, 20 Jun 2005 17:56:17 -0500 (CDT) > > From: "Matthew J. Harmon" <mjh@itys.net> > > Subject: [Xen-users] Kernel panic, unable to mount rootfs > > To: xen-users@lists.xensource.com > > Message-ID: <Pine.LNX.4.62.0506201748260.32722@nysn.vglf.arg> > > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > > > Alright, thank you for the "noreboot" kernel option! > > > > Here is the full err: > > > > Root-NFS: No NFS server available, giving up. > > VFS: Unable to mount root fs via NFS, trying floppy. > > VFS: Cannot open root device "sda2" or unknown-block(2,0) > > Please append a correct "root=" boot option > > Kernel panic - not syncing: VFS: Unable to mount root fs on > > unknown-block(2,0) > > > > Doing a bit of research on the error message, found the following > > threads on xen-devel: http://lists.xensource.com/archives/html/xen- > > devel/2004-10/msg00382.html > > http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > > > > I''m thinking this might not be a xen problem, but a grub problem? > > > > Still working on the issue, any tips would be appreciated. > > > > Thanks. > > > > -Matthew > > > > ------------------------------ > > > > Message: 3 > > Date: Mon, 20 Jun 2005 18:13:22 -0500 (CDT) > > From: "Matthew J. Harmon" <mjh@itys.net> > > Subject: [Xen-users] Re: Kernel panic, unable to mount rootfs > > To: xen-users@lists.xensource.com > > Message-ID: <Pine.LNX.4.62.0506201811200.32722@nysn.vglf.arg> > > Content-Type: TEXT/PLAIN; charset=US-ASCII > > > > Additionally, the menu.lst for grub is as follows: > > > > title Debian GNU/Linux, Xen 2.6.11xen0, testing 2005.06.18 > > kernel=/xen.gz dom0_mem=32768 noreboot > > root (hd0,0) > > module=(hd0,0)/xen-linux-2.6.11charliexen0 root=/dev/sda2 ro > > console=tty0 console=ttyS0 showopts selinux=0 > > ### BEGIN AUTOMAGIC KERNELS LIST > > ###[snip - all default] > > > > -M > > > > On Mon, 20 Jun 2005, Matthew J. Harmon wrote: > > > > Alright, thank you for the "noreboot" kernel option! > > > > Here is the full err: > > > > Root-NFS: No NFS server available, giving up. > > VFS: Unable to mount root fs via NFS, trying floppy. > > VFS: Cannot open root device "sda2" or unknown-block(2,0) > > Please append a correct "root=" boot option > > Kernel panic - not syncing: VFS: Unable to mount root fs on unknown- > > block(2,0) > > > > Doing a bit of research on the error message, found the following > > threads on xen-devel: http://lists.xensource.com/archives/html/xen- > > devel/2004-10/msg00382.html > > http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > > > > I''m thinking this might not be a xen problem, but a grub problem? > > > > Still working on the issue, any tips would be appreciated. > > > > Thanks. > > > > -Matthew > > > > ------------------------------ > > > > Message: 4 > > Date: Mon, 20 Jun 2005 19:28:02 -0500 > > From: Yvette Chanco <yentlsoup@gmail.com> > > Subject: Re: [Xen-users] Re: Kernel panic, unable to mount rootfs > > To: "Matthew J. Harmon" <mjh@itys.net>, xen-users@lists.xensource.com > > Message-ID: <cda40682050620172815c07bc6@mail.gmail.com> > > Content-Type: text/plain; charset=ISO-8859-1 > > > > If you''re getting that far (to starting the dom0) then grub might not > > directly be the issue. I got that error message when I was using a > > kernel (for dom0) that hadn''t been compiled with support for my scsi > > adapter. From the looks of your menu.lst, though, it seems you > > probably did a custom build, so you would know what you included. My > > only other guess is if there is an initrd image you haven''t put in > > the grub configuration? > > > > On 6/20/05, Matthew J. Harmon <mjh@itys.net> wrote: > > > Additionally, the menu.lst for grub is as follows: > > > > > > title Debian GNU/Linux, Xen 2.6.11xen0, testing 2005.06.18 > > > kernel=/xen.gz dom0_mem=32768 noreboot > > > root (hd0,0) > > > module=(hd0,0)/xen-linux-2.6.11charliexen0 root=/dev/sda2 ro > > > console=tty0 console=ttyS0 showopts selinux=0 > > > ### BEGIN AUTOMAGIC KERNELS LIST > > > ###[snip - all default] > > > > > > -M > > > > > > On Mon, 20 Jun 2005, Matthew J. Harmon wrote: > > > > > > Alright, thank you for the "noreboot" kernel option! > > > > > > Here is the full err: > > > > > > Root-NFS: No NFS server available, giving up. > > > VFS: Unable to mount root fs via NFS, trying floppy. > > > VFS: Cannot open root device "sda2" or unknown-block(2,0) > > > Please append a correct "root=" boot option > > > Kernel panic - not syncing: VFS: Unable to mount root fs on > > > unknown-block > > (2,0) > > > > Doing a bit of research on the error message, found the following > > > threads > > on > > > > xen-devel: > > > http://lists.xensource.com/archives/html/xen-devel/2004-10/msg00382.htm > > >l > > > http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.htm > > >l > > > > > > I''m thinking this might not be a xen problem, but a grub problem? > > > > > > Still working on the issue, any tips would be appreciated. > > > > > > Thanks. > > > > > > -Matthew > > > > > > _______________________________________________ > > > Xen-users mailing list > > > Xen-users@lists.xensource.com > > > http://lists.xensource.com/xen-users > > > > -- > > -Yvette Chanco > > www.option-c.com > > > > ------------------------------ > > > > Message: 5 > > Date: Tue, 21 Jun 2005 04:04:45 +0200 > > From: Andre Kuester <andre.kuester@gmail.com> > > Subject: [Xen-users] big sized applications in XEN virtual machine > > To: xen-users@lists.xensource.com > > Message-ID: <4ee1f99605062019041832dc70@mail.gmail.com> > > Content-Type: text/plain; charset=ISO-8859-1 > > > > Hi, > > > > recently I discovered the exsistance of Xen. I looked a bit around > > and feel quite impressed by this solution. Then an idea came to my > > mind, having a partition for a more or less stable server and one > > for my bleeding edge desktop playground. I think I am not the only > > one with that ;) But I dont want to use the typical lamp server > > config, I thought more about a massive database server, such as DB2 > > together with a recent version of SAP Netweaver. Both of them are > > quite memory and of course IO-hungry. I have decent hardware to run > > that, but I couldnt found any experience report about such a xen-DB2- > > SAP combination. So I ask you, if there are any experiences with > > that. In special I ask myself, how the removal of the TLS libraries might > > affect performance and stability of those applications. > > (Preferred OS is RHEL4) > > > > I would be glad to hear some hints or experiences. > > > > Thanks & Regards, > > Andre. > > > > ------------------------------ > > > > Message: 6 > > Date: Tue, 21 Jun 2005 10:19:28 +0700 > > From: "Fajar A. Nugraha" <fajar@telkom.net.id> > > Subject: Re: [Xen-users] big sized applications in XEN virtual > > machine To: xen-users@lists.xensource.com Message-ID: > > <42B78740.20401@telkom.net.id> > > > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > > Andre Kuester wrote: > > >So I ask you, if there are any experiences > > >with that. In special I ask myself, how the removal of the TLS libraries > > might > > > >affect performance and stability of those applications. > > >(Preferred OS is RHEL4) > > > > I tried using Oracle 10g on a rather old version of Xen from bk (it > > still uses kernel 2.6.9) with Lineox 4. > > TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of > > the way. This configuration works great running MTA (mail filtering > > purposes) and web server (LAMP). However it didn''t work quite as > > expected running Oracle. Oracle runs, but often I would get entries > > like these on alert log : > > > > ORA-07445: exception encountered: core dump [kkogbro()+2832] > > [SIGSEGV] [Address not mapped to object] [0x0] [] [] ORA-00600: > > internal error code, arguments: [kghssgai2], [1], [36], [], [], [], > > [], [] ORA-00600: internal error code, arguments: [kghssgai2], [1], > > [20], [], [], [], [], [] ORA-07445: exception encountered: core dump > > [kkogbro()+2832] [SIGSEGV] [Address not mapped to object] [0x0] [] > > [] ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], > > [], [], [], [], [] ORA-07445: exception encountered: core dump > > [kkogbro()+2832] [SIGSEGV] [Address not mapped to object] [0x0] [] > > [] ORA-07445: exception encountered: core dump [kkogbro()+2832] > > [SIGSEGV] [Address not mapped to object] [0x0] [] [] ORA-00600: > > internal error code, arguments: [kghssgai3], [128], [20], [], [], [], > > [], [] ORA-00600: internal error code, arguments: [kghssgai2], [5], > > [20], [], [], [], [], [] > > > > and sometimes it just dies. > > Revert back to native linux, everything works fine. > > > > I haven''t had time to test current Xen 2.0.6 (or nightly snapshot) > > though. > > > > Regards, > > > > Fajar > > > > ------------------------------ > > > > Message: 7 > > Date: Mon, 20 Jun 2005 20:36:03 -0700 > > From: Wim Coekaerts <wim.coekaerts@oracle.com> > > Subject: Re: [Xen-users] big sized applications in XEN virtual > > machine To: "Fajar A. Nugraha" <fajar@telkom.net.id> Cc: xen- > > users@lists.xensource.com > > > Message-ID: <20050621033602.GA4554@ca-server1.us.oracle.com> > > Content-Type: text/plain; charset=us-ascii > > > > ve had it running for quite some time without problems. even the middle > > tier stack. > > > > been pretty solid > > > > On Tue, Jun 21, 2005 at 10:19:28AM +0700, Fajar A. Nugraha wrote: > > > Andre Kuester wrote: > > > >So I ask you, if there are any experiences > > > >with that. In special I ask myself, how the removal of the TLS > > > > libraries might > > > >affect performance and stability of those applications. > > > >(Preferred OS is RHEL4) > > > > > > I tried using Oracle 10g on a rather old version of Xen from bk (it > > > still uses kernel 2.6.9) with Lineox 4. > > > TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of the > > way. > > > > This configuration works great running MTA (mail filtering purposes) > > > and web server (LAMP). > > > However it didn''t work quite as expected running Oracle. > > > Oracle runs, but often I would get entries like these on alert log : > > > > > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > > [Address not mapped to object] [0x0] [] [] > > > ORA-00600: internal error code, arguments: [kghssgai2], [1], [36], [], > > > [], [], [], [] > > > ORA-00600: internal error code, arguments: [kghssgai2], [1], [20], [], > > > [], [], [], [] > > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > > [Address not mapped to object] [0x0] [] [] > > > ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], [], > > > [], [], [], [] > > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > > [Address not mapped to object] [0x0] [] [] > > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > > [Address not mapped to object] [0x0] [] [] > > > ORA-00600: internal error code, arguments: [kghssgai3], [128], [20], > > > [], [], [], [], [] > > > ORA-00600: internal error code, arguments: [kghssgai2], [5], [20], [], > > > [], [], [], [] > > > > > > and sometimes it just dies. > > > Revert back to native linux, everything works fine. > > > > > > I haven''t had time to test current Xen 2.0.6 (or nightly snapshot) > > > though. > > > > > > Regards, > > > > > > Fajar > > > > > > _______________________________________________ > > > Xen-users mailing list > > > Xen-users@lists.xensource.com > > > http://lists.xensource.com/xen-users > > > > ------------------------------ > > > > Message: 8 > > Date: Tue, 21 Jun 2005 11:04:13 +0700 > > From: "Fajar A. Nugraha" <fajar@telkom.net.id> > > Subject: Re: [Xen-users] big sized applications in XEN virtual > > machine To: xen-users@lists.xensource.com Message-ID: > > <42B791BD.6010303@telkom.net.id> > > > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > > Wim Coekaerts wrote: > > >ve had it running for quite some time without problems. even the middle > > >tier stack. > > > > > >been pretty solid > > > > Oracle 10G? On which version of Xen and which Linux distro? > > I''d like to test it again soon. > > > > Regards, > > > > Fajar > > > > ------------------------------ > > > > Message: 9 > > Date: Tue, 21 Jun 2005 11:47:48 +0100 > > From: James Bulpin <james@xensource.com> > > Subject: Re: [Xen-users] Xen Install > > To: sramara@cs.clemson.edu, xen-users@lists.xensource.com > > Message-ID: <42B7F054.6020900@xensource.com> > > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > > Please send replies to the list rather than only to me. > > > > Have you installed Twisted? > > > > James > > > > Ramarathnam Sriram wrote: > > > Hi James, > > > Thanks alot for your prompt response. > > > Now when i boot into my xen-linux2.6.11.10 kernel and give the command > > > xend start i get the following message > > > > > > [root@tfrc1 ~]# xend start > > > Traceback (most recent call last): > > > File "/usr/sbin/xend", line 27, in ? > > > from xen.xend.server import SrvDaemon > > > File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > > > 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line > > 20, > > > > in ? > > > ImportError: No module named twisted.internet > > > [root@tfrc1 ~]# > > > > > > Please suggest what to do. > > > > > > Thanks > > > Sriram > > > > > > > > > On Mon, 20 Jun 2005 17:01:36 +0100, James Bulpin wrote > > > > > >>Ramarathnam Sriram wrote: > > >>>Hi, > > >>> I am trying to install xen on top of Fedora > > >>>I appended the following lines in menu.lst file > > >>> > > >>> title Xen 2.0 / XenLinux 2.6 > > >>> kernel /boot/xen-2.0.gz dom0_mem=131072 > > >>> module /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0 > > >> > > >>This is direct copy from the user manual without modification for > > >>your own system I suspect. > > >> > > >>>it gives the following errror > > >>> > > >>>Root-NFS: no NFS server available,giving up > > >>>VFS: Unable to mount root fs via NFS,trying floppy > > >>>VFS: Insert root floppy and press enter > > >>> > > >>> > > >>>And when I press enter I see > > >>>kernel panic (not syncing...) > > >>>(I did not catch the rest) > > >>>and it reboots. > > >>> > > >>>also i tried changing root=/dev/hdc since that is what my root is > > >>>inside /etc/fstab. > > >> > > >>No it isn''t, according to your followup email: > > >> > > >> /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 > > >> > > >>You''ll need an initrd for the kernel to be able to mount this. > > >> > > >>Boot into native Linux and run as root (I''m assuming XenLinux 2.6.11 > > >>- substitute your actual version): > > >> > > >> mkinitrd /boot/initrd-2.6.11-xen0.img 2.6.11-xen0 > > >> > > >> (you may have to do "depmod -a 2.6.11-xen0" first) > > >> > > >>Append the following line to the Xen entry in your GRUB menu.lst > > >> > > >> module /boot/initrd-2.6.11-xen0.img > > >> > > >>Change the root= option to root=/dev/VolGroup00/LogVol00 > > >> > > >>James > > > > ------------------------------ > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > > > End of Xen-users Digest, Vol 4, Issue 61 > > **************************************** > > Sriram Ramarathnam, > Graduate Student,Computer Science > Clemson University > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, When i boot into my xen-linux2.6.11.10 kernel and give the command xend start i get the following message> > [root@tfrc1 ~]# xend start > Traceback (most recent call last): > File "/usr/sbin/xend", line 27, in ? > from xen.xend.server import SrvDaemon > File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line 20, > in ? > ImportError: No module named twisted.internet > [root@tfrc1 ~]# > > Please suggest what to do. > > Thanks > SriramOn Tue, 21 Jun 2005 06:48:20 -0400 (EDT), xen-users-request wrote> Send Xen-users mailing list submissions to > xen-users@lists.xensource.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users > or, via email, send a message with subject or body ''help'' to > xen-users-request@lists.xensource.com > > You can reach the person managing the list at > xen-users-owner@lists.xensource.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Xen-users digest..." > > Today''s Topics: > > 1. Re: Stable VBD Types (Nils Toedtmann) > 2. Kernel panic, unable to mount rootfs (Matthew J. Harmon) > 3. Re: Kernel panic, unable to mount rootfs (Matthew J. Harmon) > 4. Re: Re: Kernel panic, unable to mount rootfs (Yvette Chanco) > 5. big sized applications in XEN virtual machine (Andre Kuester) > 6. Re: big sized applications in XEN virtual machine > (Fajar A. Nugraha) > > 7. Re: big sized applications in XEN virtual machine (Wim > Coekaerts) > 8. Re: big sized applications in XEN virtual machine > (Fajar A. Nugraha) > 9. Re: Xen Install (James Bulpin) > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 21 Jun 2005 00:10:33 +0200 > From: Nils Toedtmann <xen-users@nils.toedtmann.net> > Subject: Re: [Xen-users] Stable VBD Types > To: mail@alexadranghi.com > Cc: xen-users@lists.xensource.com > Message-ID: <1119305434.3840.6.camel@crusher.takatukaland.de> > Content-Type: text/plain > > Am Montag, den 20.06.2005, 18:11 +0100 schrieb Alex Adranghi: > [...] > > Thanks. Although this is relevent to what I''m wanting to do, what I > > meant to say was using lvm snapshots as a way to reduce common files > > from repeating on disk. I quote the LVM-HowTo as it explains it a little > > better. > > > > "It is also useful for creating volumes for use with Xen. You can create > > a disk image, then snapshot it and modify the snapshot for a particular > > domU instance. You can then create another snapshot of the original > > volume, and modify that one for a different domU instance. Since the > > only storage used by a snapshot is blocks that were changed on the > > origin or the snapshot, the majority of the volume is shared by the > > domU''s." > [...] > > We use the device-mapper for this. Works for us [tm]: > > dd if=/dev/zero of=/tmp/CoW1 bs=1M count=$CoW_SIZE > dd if=/dev/zero of=/tmp/CoW2 bs=1M count=$CoW_SIZE > > losetup /dev/loop0 root_fs > losetup /dev/loop1 /tmp/CoW1 > losetup /dev/loop2 /tmp/CoW2 > > BLOCKSIZE=`blockdev --getsize /dev/loop0` > > echo "0 $BLOCKSIZE linear /dev/loop0 > 0" \ | dmsetup create rootfs_base > > echo "0 $BLOCKSIZE snapshot /dev/mapper/rootfs_base /dev/loop1 p > 8" \ | dmsetup create rootfs1 > > echo "0 $BLOCKSIZE snapshot /dev/mapper/rootfs_base /dev/loop2 p > 8" \ | dmsetup create rootfs2 > > You should now be able to use /dev/mapper/rootfs{1|2} read/write. > Only diff blocks to "root_fs" get written to "/tmp/CoW{1|2}". > > This way we boot >20 domUs off one root_fs (after shutdown we delete > the CoW files). I have now clue how to do that with LVM[2]. > > /nils. > > -- > there is no sig > > ------------------------------ > > Message: 2 > Date: Mon, 20 Jun 2005 17:56:17 -0500 (CDT) > From: "Matthew J. Harmon" <mjh@itys.net> > Subject: [Xen-users] Kernel panic, unable to mount rootfs > To: xen-users@lists.xensource.com > Message-ID: <Pine.LNX.4.62.0506201748260.32722@nysn.vglf.arg> > Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > > Alright, thank you for the "noreboot" kernel option! > > Here is the full err: > > Root-NFS: No NFS server available, giving up. > VFS: Unable to mount root fs via NFS, trying floppy. > VFS: Cannot open root device "sda2" or unknown-block(2,0) > Please append a correct "root=" boot option > Kernel panic - not syncing: VFS: Unable to mount root fs on > unknown-block(2,0) > > Doing a bit of research on the error message, found the following > threads on xen-devel: http://lists.xensource.com/archives/html/xen- > devel/2004-10/msg00382.html > http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > > I''m thinking this might not be a xen problem, but a grub problem? > > Still working on the issue, any tips would be appreciated. > > Thanks. > > -Matthew > > ------------------------------ > > Message: 3 > Date: Mon, 20 Jun 2005 18:13:22 -0500 (CDT) > From: "Matthew J. Harmon" <mjh@itys.net> > Subject: [Xen-users] Re: Kernel panic, unable to mount rootfs > To: xen-users@lists.xensource.com > Message-ID: <Pine.LNX.4.62.0506201811200.32722@nysn.vglf.arg> > Content-Type: TEXT/PLAIN; charset=US-ASCII > > Additionally, the menu.lst for grub is as follows: > > title Debian GNU/Linux, Xen 2.6.11xen0, testing 2005.06.18 > kernel=/xen.gz dom0_mem=32768 noreboot > root (hd0,0) > module=(hd0,0)/xen-linux-2.6.11charliexen0 root=/dev/sda2 ro > console=tty0 console=ttyS0 showopts selinux=0 > ### BEGIN AUTOMAGIC KERNELS LIST > ###[snip - all default] > > -M > > On Mon, 20 Jun 2005, Matthew J. Harmon wrote: > > Alright, thank you for the "noreboot" kernel option! > > Here is the full err: > > Root-NFS: No NFS server available, giving up. > VFS: Unable to mount root fs via NFS, trying floppy. > VFS: Cannot open root device "sda2" or unknown-block(2,0) > Please append a correct "root=" boot option > Kernel panic - not syncing: VFS: Unable to mount root fs on unknown- > block(2,0) > > Doing a bit of research on the error message, found the following > threads on xen-devel: http://lists.xensource.com/archives/html/xen- > devel/2004-10/msg00382.html > http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > > I''m thinking this might not be a xen problem, but a grub problem? > > Still working on the issue, any tips would be appreciated. > > Thanks. > > -Matthew > > ------------------------------ > > Message: 4 > Date: Mon, 20 Jun 2005 19:28:02 -0500 > From: Yvette Chanco <yentlsoup@gmail.com> > Subject: Re: [Xen-users] Re: Kernel panic, unable to mount rootfs > To: "Matthew J. Harmon" <mjh@itys.net>, xen-users@lists.xensource.com > Message-ID: <cda40682050620172815c07bc6@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > If you''re getting that far (to starting the dom0) then grub might not > directly be the issue. I got that error message when I was using a > kernel (for dom0) that hadn''t been compiled with support for my scsi > adapter. From the looks of your menu.lst, though, it seems you > probably did a custom build, so you would know what you included. My > only other guess is if there is an initrd image you haven''t put in > the grub configuration? > > On 6/20/05, Matthew J. Harmon <mjh@itys.net> wrote: > > Additionally, the menu.lst for grub is as follows: > > > > title Debian GNU/Linux, Xen 2.6.11xen0, testing 2005.06.18 > > kernel=/xen.gz dom0_mem=32768 noreboot > > root (hd0,0) > > module=(hd0,0)/xen-linux-2.6.11charliexen0 root=/dev/sda2 ro console=tty0 > > console=ttyS0 showopts selinux=0 > > ### BEGIN AUTOMAGIC KERNELS LIST > > ###[snip - all default] > > > > -M > > > > On Mon, 20 Jun 2005, Matthew J. Harmon wrote: > > > > Alright, thank you for the "noreboot" kernel option! > > > > Here is the full err: > > > > Root-NFS: No NFS server available, giving up. > > VFS: Unable to mount root fs via NFS, trying floppy. > > VFS: Cannot open root device "sda2" or unknown-block(2,0) > > Please append a correct "root=" boot option > > Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)> > > > Doing a bit of research on the error message, found the following threadson> > xen-devel: > > http://lists.xensource.com/archives/html/xen-devel/2004-10/msg00382.html > > http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > > > > I''m thinking this might not be a xen problem, but a grub problem? > > > > Still working on the issue, any tips would be appreciated. > > > > Thanks. > > > > -Matthew > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > > > -- > -Yvette Chanco > www.option-c.com > > ------------------------------ > > Message: 5 > Date: Tue, 21 Jun 2005 04:04:45 +0200 > From: Andre Kuester <andre.kuester@gmail.com> > Subject: [Xen-users] big sized applications in XEN virtual machine > To: xen-users@lists.xensource.com > Message-ID: <4ee1f99605062019041832dc70@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > Hi, > > recently I discovered the exsistance of Xen. I looked a bit around > and feel quite impressed by this solution. Then an idea came to my > mind, having a partition for a more or less stable server and one > for my bleeding edge desktop playground. I think I am not the only > one with that ;) But I dont want to use the typical lamp server > config, I thought more about a massive database server, such as DB2 > together with a recent version of SAP Netweaver. Both of them are > quite memory and of course IO-hungry. I have decent hardware to run > that, but I couldnt found any experience report about such a xen-DB2- > SAP combination. So I ask you, if there are any experiences with > that. In special I ask myself, how the removal of the TLS libraries might > affect performance and stability of those applications. > (Preferred OS is RHEL4) > > I would be glad to hear some hints or experiences. > > Thanks & Regards, > Andre. > > ------------------------------ > > Message: 6 > Date: Tue, 21 Jun 2005 10:19:28 +0700 > From: "Fajar A. Nugraha" <fajar@telkom.net.id> > Subject: Re: [Xen-users] big sized applications in XEN virtual > machine To: xen-users@lists.xensource.com Message-ID:<42B78740.20401@telkom.net.id>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Andre Kuester wrote: > > >So I ask you, if there are any experiences > >with that. In special I ask myself, how the removal of the TLS librariesmight> >affect performance and stability of those applications. > >(Preferred OS is RHEL4) > > > > > > > I tried using Oracle 10g on a rather old version of Xen from bk (it > still uses kernel 2.6.9) with Lineox 4. > TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of > the way. This configuration works great running MTA (mail filtering > purposes) and web server (LAMP). However it didn''t work quite as > expected running Oracle. Oracle runs, but often I would get entries > like these on alert log : > > ORA-07445: exception encountered: core dump [kkogbro()+2832] > [SIGSEGV] [Address not mapped to object] [0x0] [] [] ORA-00600: > internal error code, arguments: [kghssgai2], [1], [36], [], [], [], > [], [] ORA-00600: internal error code, arguments: [kghssgai2], [1], > [20], [], [], [], [], [] ORA-07445: exception encountered: core dump > [kkogbro()+2832] [SIGSEGV] [Address not mapped to object] [0x0] [] > [] ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], > [], [], [], [], [] ORA-07445: exception encountered: core dump > [kkogbro()+2832] [SIGSEGV] [Address not mapped to object] [0x0] [] > [] ORA-07445: exception encountered: core dump [kkogbro()+2832] > [SIGSEGV] [Address not mapped to object] [0x0] [] [] ORA-00600: > internal error code, arguments: [kghssgai3], [128], [20], [], [], [], > [], [] ORA-00600: internal error code, arguments: [kghssgai2], [5], > [20], [], [], [], [], [] > > and sometimes it just dies. > Revert back to native linux, everything works fine. > > I haven''t had time to test current Xen 2.0.6 (or nightly snapshot) though. > > Regards, > > Fajar > > ------------------------------ > > Message: 7 > Date: Mon, 20 Jun 2005 20:36:03 -0700 > From: Wim Coekaerts <wim.coekaerts@oracle.com> > Subject: Re: [Xen-users] big sized applications in XEN virtual > machine To: "Fajar A. Nugraha" <fajar@telkom.net.id> Cc: xen-users@lists.xensource.com> Message-ID: <20050621033602.GA4554@ca-server1.us.oracle.com> > Content-Type: text/plain; charset=us-ascii > > ve had it running for quite some time without problems. even the middle > tier stack. > > been pretty solid > > On Tue, Jun 21, 2005 at 10:19:28AM +0700, Fajar A. Nugraha wrote: > > Andre Kuester wrote: > > > > >So I ask you, if there are any experiences > > >with that. In special I ask myself, how the removal of the TLS libraries > > >might > > >affect performance and stability of those applications. > > >(Preferred OS is RHEL4) > > > > > > > > > > > I tried using Oracle 10g on a rather old version of Xen from bk (it > > still uses kernel 2.6.9) with Lineox 4. > > TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of theway.> > This configuration works great running MTA (mail filtering purposes) and > > web server (LAMP). > > However it didn''t work quite as expected running Oracle. > > Oracle runs, but often I would get entries like these on alert log : > > > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > [Address not mapped to object] [0x0] [] [] > > ORA-00600: internal error code, arguments: [kghssgai2], [1], [36], [], > > [], [], [], [] > > ORA-00600: internal error code, arguments: [kghssgai2], [1], [20], [], > > [], [], [], [] > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > [Address not mapped to object] [0x0] [] [] > > ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], [], > > [], [], [], [] > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > [Address not mapped to object] [0x0] [] [] > > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > > [Address not mapped to object] [0x0] [] [] > > ORA-00600: internal error code, arguments: [kghssgai3], [128], [20], [], > > [], [], [], [] > > ORA-00600: internal error code, arguments: [kghssgai2], [5], [20], [], > > [], [], [], [] > > > > and sometimes it just dies. > > Revert back to native linux, everything works fine. > > > > I haven''t had time to test current Xen 2.0.6 (or nightly snapshot) though. > > > > Regards, > > > > Fajar > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > ------------------------------ > > Message: 8 > Date: Tue, 21 Jun 2005 11:04:13 +0700 > From: "Fajar A. Nugraha" <fajar@telkom.net.id> > Subject: Re: [Xen-users] big sized applications in XEN virtual > machine To: xen-users@lists.xensource.com Message-ID:<42B791BD.6010303@telkom.net.id>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Wim Coekaerts wrote: > > >ve had it running for quite some time without problems. even the middle > >tier stack. > > > >been pretty solid > > > > > Oracle 10G? On which version of Xen and which Linux distro? > I''d like to test it again soon. > > Regards, > > Fajar > > ------------------------------ > > Message: 9 > Date: Tue, 21 Jun 2005 11:47:48 +0100 > From: James Bulpin <james@xensource.com> > Subject: Re: [Xen-users] Xen Install > To: sramara@cs.clemson.edu, xen-users@lists.xensource.com > Message-ID: <42B7F054.6020900@xensource.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Please send replies to the list rather than only to me. > > Have you installed Twisted? > > James > > Ramarathnam Sriram wrote: > > Hi James, > > Thanks alot for your prompt response. > > Now when i boot into my xen-linux2.6.11.10 kernel and give the command > > xend start i get the following message > > > > [root@tfrc1 ~]# xend start > > Traceback (most recent call last): > > File "/usr/sbin/xend", line 27, in ? > > from xen.xend.server import SrvDaemon > > File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > > 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line20,> > in ? > > ImportError: No module named twisted.internet > > [root@tfrc1 ~]# > > > > Please suggest what to do. > > > > Thanks > > Sriram > > > > > > On Mon, 20 Jun 2005 17:01:36 +0100, James Bulpin wrote > > > >>Ramarathnam Sriram wrote: > >> > >>>Hi, > >>> I am trying to install xen on top of Fedora > >>>I appended the following lines in menu.lst file > >>> > >>> title Xen 2.0 / XenLinux 2.6 > >>> kernel /boot/xen-2.0.gz dom0_mem=131072 > >>> module /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0 > >> > >>This is direct copy from the user manual without modification for > >>your own system I suspect. > >> > >> > >>>it gives the following errror > >>> > >>>Root-NFS: no NFS server available,giving up > >>>VFS: Unable to mount root fs via NFS,trying floppy > >>>VFS: Insert root floppy and press enter > >>> > >>> > >>>And when I press enter I see > >>>kernel panic (not syncing...) > >>>(I did not catch the rest) > >>>and it reboots. > >>> > >>>also i tried changing root=/dev/hdc since that is what my root is > >>>inside /etc/fstab. > >> > >>No it isn''t, according to your followup email: > >> > >> /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 > >> > >>You''ll need an initrd for the kernel to be able to mount this. > >> > >>Boot into native Linux and run as root (I''m assuming XenLinux 2.6.11 > >>- substitute your actual version): > >> > >> mkinitrd /boot/initrd-2.6.11-xen0.img 2.6.11-xen0 > >> > >> (you may have to do "depmod -a 2.6.11-xen0" first) > >> > >>Append the following line to the Xen entry in your GRUB menu.lst > >> > >> module /boot/initrd-2.6.11-xen0.img > >> > >>Change the root= option to root=/dev/VolGroup00/LogVol00 > >> > >>James > > > > > > > > ------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > > End of Xen-users Digest, Vol 4, Issue 61 > ****************************************Sriram Ramarathnam, Graduate Student,Computer Science Clemson University _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, Now when i do xend start after booting into my Xen-linux kernel, i get the follwing error. Traceback (most recent call last): File "/usr/sbin/xend", line 27, in ? from xen.xend.server import SrvDaemon File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line 35, in ? File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvServer.py", line 28, in ? ImportError: No module named web [root@tfrc1 ~]# please suggest what to do. Thanks Sriram On Tue, 21 Jun 2005 11:06:44 -0400 (EDT), Daniel Paquet wrote> You need the python module twisted, to install it you can get the Xen sources uncompress them and type make install-twisted. > > > Hi, > > When i boot into my xen-linux2.6.11.10 kernel and give the command > > xend start i get the following message > >> > >> [root@tfrc1 ~]# xend start > >> Traceback (most recent call last): > >> File "/usr/sbin/xend", line 27, in ? > >> from xen.xend.server import SrvDaemon > >> File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > >> 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line > >> 20, > >> in ? > >> ImportError: No module named twisted.internet > >> [root@tfrc1 ~]# > >> > >> Please suggest what to do. > >> > >> Thanks > >> Sriram > > > > > > On Tue, 21 Jun 2005 06:48:20 -0400 (EDT), xen-users-request wrote > >> Send Xen-users mailing list submissions to > >> xen-users@lists.xensource.com > >> > >> To subscribe or unsubscribe via the World Wide Web, visit > >> http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users > >> or, via email, send a message with subject or body ''help'' to > >> xen-users-request@lists.xensource.com > >> > >> You can reach the person managing the list at > >> xen-users-owner@lists.xensource.com > >> > >> When replying, please edit your Subject line so it is more specific > >> than "Re: Contents of Xen-users digest..." > >> > >> Today''s Topics: > >> > >> 1. Re: Stable VBD Types (Nils Toedtmann) > >> 2. Kernel panic, unable to mount rootfs (Matthew J. Harmon) > >> 3. Re: Kernel panic, unable to mount rootfs (Matthew J. Harmon) > >> 4. Re: Re: Kernel panic, unable to mount rootfs (Yvette Chanco) > >> 5. big sized applications in XEN virtual machine (Andre Kuester) > >> 6. Re: big sized applications in XEN virtual machine > >> (Fajar A. Nugraha) > >> > >> 7. Re: big sized applications in XEN virtual machine (Wim > >> Coekaerts) > >> 8. Re: big sized applications in XEN virtual machine > >> (Fajar A. Nugraha) > >> 9. Re: Xen Install (James Bulpin) > >> > >> ---------------------------------------------------------------------- > >> > >> Message: 1 > >> Date: Tue, 21 Jun 2005 00:10:33 +0200 > >> From: Nils Toedtmann <xen-users@nils.toedtmann.net> > >> Subject: Re: [Xen-users] Stable VBD Types > >> To: mail@alexadranghi.com > >> Cc: xen-users@lists.xensource.com > >> Message-ID: <1119305434.3840.6.camel@crusher.takatukaland.de> > >> Content-Type: text/plain > >> > >> Am Montag, den 20.06.2005, 18:11 +0100 schrieb Alex Adranghi: > >> [...] > >> > Thanks. Although this is relevent to what I''m wanting to do, what I > >> > meant to say was using lvm snapshots as a way to reduce common files > >> > from repeating on disk. I quote the LVM-HowTo as it explains it a > >> little > >> > better. > >> > > >> > "It is also useful for creating volumes for use with Xen. You can > >> create > >> > a disk image, then snapshot it and modify the snapshot for a > >> particular > >> > domU instance. You can then create another snapshot of the original > >> > volume, and modify that one for a different domU instance. Since the > >> > only storage used by a snapshot is blocks that were changed on the > >> > origin or the snapshot, the majority of the volume is shared by the > >> > domU''s." > >> [...] > >> > >> We use the device-mapper for this. Works for us [tm]: > >> > >> dd if=/dev/zero of=/tmp/CoW1 bs=1M count=$CoW_SIZE > >> dd if=/dev/zero of=/tmp/CoW2 bs=1M count=$CoW_SIZE > >> > >> losetup /dev/loop0 root_fs > >> losetup /dev/loop1 /tmp/CoW1 > >> losetup /dev/loop2 /tmp/CoW2 > >> > >> BLOCKSIZE=`blockdev --getsize /dev/loop0` > >> > >> echo "0 $BLOCKSIZE linear /dev/loop0 > >> 0" \ | dmsetup create rootfs_base > >> > >> echo "0 $BLOCKSIZE snapshot /dev/mapper/rootfs_base /dev/loop1 p > >> 8" \ | dmsetup create rootfs1 > >> > >> echo "0 $BLOCKSIZE snapshot /dev/mapper/rootfs_base /dev/loop2 p > >> 8" \ | dmsetup create rootfs2 > >> > >> You should now be able to use /dev/mapper/rootfs{1|2} read/write. > >> Only diff blocks to "root_fs" get written to "/tmp/CoW{1|2}". > >> > >> This way we boot >20 domUs off one root_fs (after shutdown we delete > >> the CoW files). I have now clue how to do that with LVM[2]. > >> > >> /nils. > >> > >> -- > >> there is no sig > >> > >> ------------------------------ > >> > >> Message: 2 > >> Date: Mon, 20 Jun 2005 17:56:17 -0500 (CDT) > >> From: "Matthew J. Harmon" <mjh@itys.net> > >> Subject: [Xen-users] Kernel panic, unable to mount rootfs > >> To: xen-users@lists.xensource.com > >> Message-ID: <Pine.LNX.4.62.0506201748260.32722@nysn.vglf.arg> > >> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed > >> > >> Alright, thank you for the "noreboot" kernel option! > >> > >> Here is the full err: > >> > >> Root-NFS: No NFS server available, giving up. > >> VFS: Unable to mount root fs via NFS, trying floppy. > >> VFS: Cannot open root device "sda2" or unknown-block(2,0) > >> Please append a correct "root=" boot option > >> Kernel panic - not syncing: VFS: Unable to mount root fs on > >> unknown-block(2,0) > >> > >> Doing a bit of research on the error message, found the following > >> threads on xen-devel: http://lists.xensource.com/archives/html/xen- > >> devel/2004-10/msg00382.html > >> http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > >> > >> I''m thinking this might not be a xen problem, but a grub problem? > >> > >> Still working on the issue, any tips would be appreciated. > >> > >> Thanks. > >> > >> -Matthew > >> > >> ------------------------------ > >> > >> Message: 3 > >> Date: Mon, 20 Jun 2005 18:13:22 -0500 (CDT) > >> From: "Matthew J. Harmon" <mjh@itys.net> > >> Subject: [Xen-users] Re: Kernel panic, unable to mount rootfs > >> To: xen-users@lists.xensource.com > >> Message-ID: <Pine.LNX.4.62.0506201811200.32722@nysn.vglf.arg> > >> Content-Type: TEXT/PLAIN; charset=US-ASCII > >> > >> Additionally, the menu.lst for grub is as follows: > >> > >> title Debian GNU/Linux, Xen 2.6.11xen0, testing 2005.06.18 > >> kernel=/xen.gz dom0_mem=32768 noreboot > >> root (hd0,0) > >> module=(hd0,0)/xen-linux-2.6.11charliexen0 root=/dev/sda2 ro > >> console=tty0 console=ttyS0 showopts selinux=0 > >> ### BEGIN AUTOMAGIC KERNELS LIST > >> ###[snip - all default] > >> > >> -M > >> > >> On Mon, 20 Jun 2005, Matthew J. Harmon wrote: > >> > >> Alright, thank you for the "noreboot" kernel option! > >> > >> Here is the full err: > >> > >> Root-NFS: No NFS server available, giving up. > >> VFS: Unable to mount root fs via NFS, trying floppy. > >> VFS: Cannot open root device "sda2" or unknown-block(2,0) > >> Please append a correct "root=" boot option > >> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown- > >> block(2,0) > >> > >> Doing a bit of research on the error message, found the following > >> threads on xen-devel: http://lists.xensource.com/archives/html/xen- > >> devel/2004-10/msg00382.html > >> http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > >> > >> I''m thinking this might not be a xen problem, but a grub problem? > >> > >> Still working on the issue, any tips would be appreciated. > >> > >> Thanks. > >> > >> -Matthew > >> > >> ------------------------------ > >> > >> Message: 4 > >> Date: Mon, 20 Jun 2005 19:28:02 -0500 > >> From: Yvette Chanco <yentlsoup@gmail.com> > >> Subject: Re: [Xen-users] Re: Kernel panic, unable to mount rootfs > >> To: "Matthew J. Harmon" <mjh@itys.net>, xen-users@lists.xensource.com > >> Message-ID: <cda40682050620172815c07bc6@mail.gmail.com> > >> Content-Type: text/plain; charset=ISO-8859-1 > >> > >> If you''re getting that far (to starting the dom0) then grub might not > >> directly be the issue. I got that error message when I was using a > >> kernel (for dom0) that hadn''t been compiled with support for my scsi > >> adapter. From the looks of your menu.lst, though, it seems you > >> probably did a custom build, so you would know what you included. My > >> only other guess is if there is an initrd image you haven''t put in > >> the grub configuration? > >> > >> On 6/20/05, Matthew J. Harmon <mjh@itys.net> wrote: > >> > Additionally, the menu.lst for grub is as follows: > >> > > >> > title Debian GNU/Linux, Xen 2.6.11xen0, testing 2005.06.18 > >> > kernel=/xen.gz dom0_mem=32768 noreboot > >> > root (hd0,0) > >> > module=(hd0,0)/xen-linux-2.6.11charliexen0 root=/dev/sda2 ro > >> console=tty0 > >> > console=ttyS0 showopts selinux=0 > >> > ### BEGIN AUTOMAGIC KERNELS LIST > >> > ###[snip - all default] > >> > > >> > -M > >> > > >> > On Mon, 20 Jun 2005, Matthew J. Harmon wrote: > >> > > >> > Alright, thank you for the "noreboot" kernel option! > >> > > >> > Here is the full err: > >> > > >> > Root-NFS: No NFS server available, giving up. > >> > VFS: Unable to mount root fs via NFS, trying floppy. > >> > VFS: Cannot open root device "sda2" or unknown-block(2,0) > >> > Please append a correct "root=" boot option > >> > Kernel panic - not syncing: VFS: Unable to mount root fs on > >> unknown-block > > (2,0) > >> > > >> > Doing a bit of research on the error message, found the following > >> threads > > on > >> > xen-devel: > >> > http://lists.xensource.com/archives/html/xen-devel/2004-10/msg00382.html > >> > http://lists.xensource.com/archives/html/xen-devel/2004-12/msg00470.html > >> > > >> > I''m thinking this might not be a xen problem, but a grub problem? > >> > > >> > Still working on the issue, any tips would be appreciated. > >> > > >> > Thanks. > >> > > >> > -Matthew > >> > > >> > _______________________________________________ > >> > Xen-users mailing list > >> > Xen-users@lists.xensource.com > >> > http://lists.xensource.com/xen-users > >> > > >> > >> -- > >> -Yvette Chanco > >> www.option-c.com > >> > >> ------------------------------ > >> > >> Message: 5 > >> Date: Tue, 21 Jun 2005 04:04:45 +0200 > >> From: Andre Kuester <andre.kuester@gmail.com> > >> Subject: [Xen-users] big sized applications in XEN virtual machine > >> To: xen-users@lists.xensource.com > >> Message-ID: <4ee1f99605062019041832dc70@mail.gmail.com> > >> Content-Type: text/plain; charset=ISO-8859-1 > >> > >> Hi, > >> > >> recently I discovered the exsistance of Xen. I looked a bit around > >> and feel quite impressed by this solution. Then an idea came to my > >> mind, having a partition for a more or less stable server and one > >> for my bleeding edge desktop playground. I think I am not the only > >> one with that ;) But I dont want to use the typical lamp server > >> config, I thought more about a massive database server, such as DB2 > >> together with a recent version of SAP Netweaver. Both of them are > >> quite memory and of course IO-hungry. I have decent hardware to run > >> that, but I couldnt found any experience report about such a xen-DB2- > >> SAP combination. So I ask you, if there are any experiences with > >> that. In special I ask myself, how the removal of the TLS libraries > >> might > >> affect performance and stability of those applications. > >> (Preferred OS is RHEL4) > >> > >> I would be glad to hear some hints or experiences. > >> > >> Thanks & Regards, > >> Andre. > >> > >> ------------------------------ > >> > >> Message: 6 > >> Date: Tue, 21 Jun 2005 10:19:28 +0700 > >> From: "Fajar A. Nugraha" <fajar@telkom.net.id> > >> Subject: Re: [Xen-users] big sized applications in XEN virtual > >> machine To: xen-users@lists.xensource.com Message-ID: > > <42B78740.20401@telkom.net.id> > >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >> > >> Andre Kuester wrote: > >> > >> >So I ask you, if there are any experiences > >> >with that. In special I ask myself, how the removal of the TLS > >> libraries > > might > >> >affect performance and stability of those applications. > >> >(Preferred OS is RHEL4) > >> > > >> > > >> > > >> I tried using Oracle 10g on a rather old version of Xen from bk (it > >> still uses kernel 2.6.9) with Lineox 4. > >> TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of > >> the way. This configuration works great running MTA (mail filtering > >> purposes) and web server (LAMP). However it didn''t work quite as > >> expected running Oracle. Oracle runs, but often I would get entries > >> like these on alert log : > >> > >> ORA-07445: exception encountered: core dump [kkogbro()+2832] > >> [SIGSEGV] [Address not mapped to object] [0x0] [] [] ORA-00600: > >> internal error code, arguments: [kghssgai2], [1], [36], [], [], [], > >> [], [] ORA-00600: internal error code, arguments: [kghssgai2], [1], > >> [20], [], [], [], [], [] ORA-07445: exception encountered: core dump > >> [kkogbro()+2832] [SIGSEGV] [Address not mapped to object] [0x0] [] > >> [] ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], > >> [], [], [], [], [] ORA-07445: exception encountered: core dump > >> [kkogbro()+2832] [SIGSEGV] [Address not mapped to object] [0x0] [] > >> [] ORA-07445: exception encountered: core dump [kkogbro()+2832] > >> [SIGSEGV] [Address not mapped to object] [0x0] [] [] ORA-00600: > >> internal error code, arguments: [kghssgai3], [128], [20], [], [], [], > >> [], [] ORA-00600: internal error code, arguments: [kghssgai2], [5], > >> [20], [], [], [], [], [] > >> > >> and sometimes it just dies. > >> Revert back to native linux, everything works fine. > >> > >> I haven''t had time to test current Xen 2.0.6 (or nightly snapshot) > >> though. > >> > >> Regards, > >> > >> Fajar > >> > >> ------------------------------ > >> > >> Message: 7 > >> Date: Mon, 20 Jun 2005 20:36:03 -0700 > >> From: Wim Coekaerts <wim.coekaerts@oracle.com> > >> Subject: Re: [Xen-users] big sized applications in XEN virtual > >> machine To: "Fajar A. Nugraha" <fajar@telkom.net.id> Cc: xen- > > users@lists.xensource.com > >> Message-ID: <20050621033602.GA4554@ca-server1.us.oracle.com> > >> Content-Type: text/plain; charset=us-ascii > >> > >> ve had it running for quite some time without problems. even the middle > >> tier stack. > >> > >> been pretty solid > >> > >> On Tue, Jun 21, 2005 at 10:19:28AM +0700, Fajar A. Nugraha wrote: > >> > Andre Kuester wrote: > >> > > >> > >So I ask you, if there are any experiences > >> > >with that. In special I ask myself, how the removal of the TLS > >> libraries > >> > >might > >> > >affect performance and stability of those applications. > >> > >(Preferred OS is RHEL4) > >> > > > >> > > > >> > > > >> > I tried using Oracle 10g on a rather old version of Xen from bk (it > >> > still uses kernel 2.6.9) with Lineox 4. > >> > TLS libs (/lib/tls, /usr/lib/tls, /usr/X11r6/lib/tls) moved out of the > > way. > >> > This configuration works great running MTA (mail filtering purposes) > >> and > >> > web server (LAMP). > >> > However it didn''t work quite as expected running Oracle. > >> > Oracle runs, but often I would get entries like these on alert log : > >> > > >> > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > >> > [Address not mapped to object] [0x0] [] [] > >> > ORA-00600: internal error code, arguments: [kghssgai2], [1], [36], [], > >> > [], [], [], [] > >> > ORA-00600: internal error code, arguments: [kghssgai2], [1], [20], [], > >> > [], [], [], [] > >> > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > >> > [Address not mapped to object] [0x0] [] [] > >> > ORA-00600: internal error code, arguments: [kghssgai2], [5], [36], [], > >> > [], [], [], [] > >> > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > >> > [Address not mapped to object] [0x0] [] [] > >> > ORA-07445: exception encountered: core dump [kkogbro()+2832] [SIGSEGV] > >> > [Address not mapped to object] [0x0] [] [] > >> > ORA-00600: internal error code, arguments: [kghssgai3], [128], [20], > >> [], > >> > [], [], [], [] > >> > ORA-00600: internal error code, arguments: [kghssgai2], [5], [20], [], > >> > [], [], [], [] > >> > > >> > and sometimes it just dies. > >> > Revert back to native linux, everything works fine. > >> > > >> > I haven''t had time to test current Xen 2.0.6 (or nightly snapshot) > >> though. > >> > > >> > Regards, > >> > > >> > Fajar > >> > > >> > _______________________________________________ > >> > Xen-users mailing list > >> > Xen-users@lists.xensource.com > >> > http://lists.xensource.com/xen-users > >> > >> ------------------------------ > >> > >> Message: 8 > >> Date: Tue, 21 Jun 2005 11:04:13 +0700 > >> From: "Fajar A. Nugraha" <fajar@telkom.net.id> > >> Subject: Re: [Xen-users] big sized applications in XEN virtual > >> machine To: xen-users@lists.xensource.com Message-ID: > > <42B791BD.6010303@telkom.net.id> > >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >> > >> Wim Coekaerts wrote: > >> > >> >ve had it running for quite some time without problems. even the middle > >> >tier stack. > >> > > >> >been pretty solid > >> > > >> > > >> Oracle 10G? On which version of Xen and which Linux distro? > >> I''d like to test it again soon. > >> > >> Regards, > >> > >> Fajar > >> > >> ------------------------------ > >> > >> Message: 9 > >> Date: Tue, 21 Jun 2005 11:47:48 +0100 > >> From: James Bulpin <james@xensource.com> > >> Subject: Re: [Xen-users] Xen Install > >> To: sramara@cs.clemson.edu, xen-users@lists.xensource.com > >> Message-ID: <42B7F054.6020900@xensource.com> > >> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >> > >> Please send replies to the list rather than only to me. > >> > >> Have you installed Twisted? > >> > >> James > >> > >> Ramarathnam Sriram wrote: > >> > Hi James, > >> > Thanks alot for your prompt response. > >> > Now when i boot into my xen-linux2.6.11.10 kernel and give the command > >> > xend start i get the following message > >> > > >> > [root@tfrc1 ~]# xend start > >> > Traceback (most recent call last): > >> > File "/usr/sbin/xend", line 27, in ? > >> > from xen.xend.server import SrvDaemon > >> > File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > >> > 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", line > > 20, > >> > in ? > >> > ImportError: No module named twisted.internet > >> > [root@tfrc1 ~]# > >> > > >> > Please suggest what to do. > >> > > >> > Thanks > >> > Sriram > >> > > >> > > >> > On Mon, 20 Jun 2005 17:01:36 +0100, James Bulpin wrote > >> > > >> >>Ramarathnam Sriram wrote: > >> >> > >> >>>Hi, > >> >>> I am trying to install xen on top of Fedora > >> >>>I appended the following lines in menu.lst file > >> >>> > >> >>> title Xen 2.0 / XenLinux 2.6 > >> >>> kernel /boot/xen-2.0.gz dom0_mem=131072 > >> >>> module /boot/vmlinuz-2.6-xen0 root=/dev/sda4 ro console=tty0 > >> >> > >> >>This is direct copy from the user manual without modification for > >> >>your own system I suspect. > >> >> > >> >> > >> >>>it gives the following errror > >> >>> > >> >>>Root-NFS: no NFS server available,giving up > >> >>>VFS: Unable to mount root fs via NFS,trying floppy > >> >>>VFS: Insert root floppy and press enter > >> >>> > >> >>> > >> >>>And when I press enter I see > >> >>>kernel panic (not syncing...) > >> >>>(I did not catch the rest) > >> >>>and it reboots. > >> >>> > >> >>>also i tried changing root=/dev/hdc since that is what my root is > >> >>>inside /etc/fstab. > >> >> > >> >>No it isn''t, according to your followup email: > >> >> > >> >> /dev/VolGroup00/LogVol00 / ext3 defaults 1 1 > >> >> > >> >>You''ll need an initrd for the kernel to be able to mount this. > >> >> > >> >>Boot into native Linux and run as root (I''m assuming XenLinux 2.6.11 > >> >>- substitute your actual version): > >> >> > >> >> mkinitrd /boot/initrd-2.6.11-xen0.img 2.6.11-xen0 > >> >> > >> >> (you may have to do "depmod -a 2.6.11-xen0" first) > >> >> > >> >>Append the following line to the Xen entry in your GRUB menu.lst > >> >> > >> >> module /boot/initrd-2.6.11-xen0.img > >> >> > >> >>Change the root= option to root=/dev/VolGroup00/LogVol00 > >> >> > >> >>James > >> > > >> > > >> > > >> > >> ------------------------------ > >> > >> _______________________________________________ > >> Xen-users mailing list > >> Xen-users@lists.xensource.com > >> http://lists.xensource.com/xen-users > >> > >> End of Xen-users Digest, Vol 4, Issue 61 > >> **************************************** > > > > > > Sriram Ramarathnam, > > Graduate Student,Computer Science > > Clemson University > > > > > > _______________________________________________ > > Xen-users mailing list > > Xen-users@lists.xensource.com > > http://lists.xensource.com/xen-users > > > > !DSPAM:42b81e38311831796990570! > > > > > > > > -- > Daniel Paquet > Administrateur Systèmes > Consultant et revendeur autorisé Linspire > > -- > Vous avez des besoins en informatique? > Contactez-moi! > > Bientôt disponible Linspire en Français, > débarrassez vous des virus et "spyware"!Sriram Ramarathnam, Graduate Student,Computer Science Clemson University _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
It looks like the new version 2.x of Twisted has separated the twisted.web part of the library out into a separate package "Twisted Web". Which version of Twisted are you using? I''d suggest sticking with 1.3 for now. Has anyone tried using Twisted 2.x + Twisted Web with xend? James Ramarathnam Sriram wrote:> *Hi,* > > *Now when i do xend start after booting into my Xen-linux kernel, i get > the follwing error.* > > *Traceback (most recent call last): > File "/usr/sbin/xend", line 27, in ? > from xen.xend.server import SrvDaemon > File > "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", > line 35, in ? > File > "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen-2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvServer.py", > line 28, in ? > ImportError: No module named web > [root@tfrc1 ~]# > * > > *please suggest what to do.* > > *Thanks* > > *Sriram* > > ** > > *On Tue, 21 Jun 2005 11:06:44 -0400 (EDT), Daniel Paquet wrote* > > You need the python module twisted, to install it you can get the Xen > sources uncompress them and type make install-twisted. > > > > > Hi, > > > When i boot into my xen-linux2.6.11.10 kernel and give the command > > > xend start i get the following message > > >> > > >> [root@tfrc1 ~]# xend start > > >> Traceback (most recent call last): > > >> File "/usr/sbin/xend", line 27, in ? > > >> from xen.xend.server import SrvDaemon > > >> File "/auto/groups/xeno-xenod/users/xenod/cron-build/R24768.dir/xen- > > >> 2.0.bk/dist/install/usr/lib/python/xen/xend/server/SrvDaemon.py", > line > > >> 20, > > >> in ? > > >> ImportError: No module named twisted.internet > > >> [root@tfrc1 ~]# > > >> > > >> Please suggest what to do. > > >> > > >> Thanks > > >> Sriram_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users