search for: tap2

Hello, I''m using Xen (installed from source - "hg clone http://xenbits.xen.org/xen-4.0-testing.hg") on Debian Lenny. Dom0 kernel is 2.6.32-bpo.5-xen-686. Until now I have successfully ran the Lucid Ubuntu as domU guest, defining disks as (and also as file:): disk = [''tap2:aio:/home/xen/domains/lucid/disk.img,xvda1,w'', ''tap2:aio:/home/xen/domains/lucid/swap.img,xvda2,w''] However, when I try "disk = [''tap2:remus:backup_ip:9000|aio:/home/xen/domains/lucid/disk.img,xvda1,w'', ''tap2:remus:backup_ip:9000|aio:/home...

...6.34-4.tar.bz2, and one of the things that I noticed immediately is there are two problems with tapdisk and this combination. First, the syntax "disk = [''tap:tapdisk:aio: ..." no longer works. When tested with HVM domU, it boots, but there was no disk attched (and /sys/class/blktap2/devices stays empty). Changing it to tap2:tapdisk:aio works (sort of). I recall some discussion about tap vs tap2 compatibility on this list earlier, but no final conclusion. Shouldn''t newer versions be backward compatible? Existing tap:aio and tap:tapdisk:aio should just work to minimize...

...things I''ve noticed: -The tap:remus:backupHostIP:port|aio:imagePath notation does not work for me, although this is what is written in the Remus documentation. However, I have found the following to work (i.e., not complain when starting domU), so this is what I''ve been using: tap2:remus:backupHostIP:port|aio:imagePath... When I invoke the remus script, I do indeed see checkpoint traffic flowing between primary host and backup host. However, disk replication does not actually seem to be working (the image on the backup host is never modified). xend.log gives me the followi...

...was all about xm/xend testing. I manually enabled xend first. What Works OK: - Manually creating/managing guests with xm and domU cfgfiles in /etc/xen and LVM volumes as storage (phy backend). - Manually creating/managing guests with xm and domU cfgfiles in /etc/xen and file images as storage (tap2:aio backend). - Using virt-install to install PV domUs using LVM volumes as storage (phy backend). - Using virt-manager to install PV domUs using LVM volumes as storage (phy backend). What doesn't work: - Using virt-manager to install PV domUs using file images as storage (tap:aio backend)....

...ot sure what is the problem. I can attach that image with tap-ctl on Dom0. Does anybody advice me about this problem?? Sincerely * Environment OS : Scientific Linux 6.1 x86_64 Kernel : 2.6.32.43 git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git Xen : 4.1.1 * Error # # tap2:tapdisk:vhd # /usr/sbin/xm create xentest2 -c Using config file "./xentest2". Error: Disk isn''t accessible cat xentest2 name = "test" maxmem = 512 memory = 512 vcpus = 1 bootloader = "/usr/bin/pygrub" on_poweroff = "destroy&q...

Hi Guys, I''m working with: 1. xen 4.1; 2. dom0 ubuntu kernel 3.2 I''m trying to run remus with disk replication (I can run without disk replication). But I read I need to use tap2 < http://nss.cs.ubc.ca/remus/doc.html>. Well... first I tried to create a pv guest. Then I take this guest.cfg: 1. name = "ubuntu-ha" 2. memory = 256 3. disk = [''tap*2*:tapdisk:aio:/var/lib/xen/images/ubuntu-ha.img,xvda,w''] 4. vif = ['' '...

Hi, ALL When I use "tap" config, the VM is OK. Than I replace disk config "tap" with "tap2", And VM hangs during bootup. I use "xm list" to list vm and find the time of hanged VM is growing fast. After VM hangs, we can not create other VMs. It prints "Error: Device 0 (vif) could not be connected. Hotplug scripts not working" . How can I fix it?

...e PV drivers in windows I didn''t notice any difference in performance at all. Windows says the drivers are working. Some more searching and reading and it appears that I do actually need to make some changes to my windows config file. So, I changed my disk line from: disk = [ ''tap2:tapdisk:aio:/home/xen/xenwin7.img,hda,w''] to: disk = [ ''tap2:tapdisk:aio:/home/xen/xenwin7.img,xvda,w'' ] According to the windows experience index disk performance is now several points better! I''ve also changed the line: vif = [ ''type=ioemu, brid...

Forwarding to you original patch requested. It works for me. Boris --- On Sun, 7/11/10, eXeC001er <execooler@gmail.com> wrote: From: eXeC001er <execooler@gmail.com> Subject: [Xen-devel] [PATCH] blktap2: blktap2 and pygrub (xen-unstable) To: "Xen-devel" <xen-devel@lists.xensource.com> Date: Sunday, July 11, 2010, 9:18 AM 1. Bug fix for error: "Error: Device /dev/xvdp (51952, tap2) is already connected."2. Bug fix for error: "Error: Device 51952 not connected" ...

...5)#rpm -e xen-libs-4.1.2_14-0.5.5 #rpm -e xen-tools-4.1.2_14-0.5.5 #rpm -e xen-libs-32bits-4.1.2_14-0.5.5 --nodeps 6)install git tools to update xen 4.2.0 source 7)# make world # make install 8)# /etc/init.d/xencommons start # /etc/init.d/xend start #modprobe blktap2 #modprobe blktap 9)localhost:~/work/test # vhd-util create -n vdisk.vhd -s 10240MB 10)modfiy /etc/xen/xmexample.hvm see accessoriy file xmexample.hvm 11)localhost:~/work/test # xm list Name ID Mem VCPUs State Time(s) Domain...

...or writing). -- Pasi > Thanks > -- > Karel > > On 7.9.2015 21:45, Pasi K?rkk?inen wrote: > >On Mon, Sep 07, 2015 at 05:47:39PM +0200, Karel Hendrych wrote: > >>... > >> > >>changing from: <driver name='file'/> to: <driver name='tap2'/> makes > >>the domain start without QEMU. > >> > >>However I see much better performance with QEMU (close to dom0, > >>tested using simple dd writes) than with tap2 driver. Is that > >>expected? > >> > > > >How did you measu...

On Mon, Sep 07, 2015 at 05:47:39PM +0200, Karel Hendrych wrote: > ... > > changing from: <driver name='file'/> to: <driver name='tap2'/> makes > the domain start without QEMU. > > However I see much better performance with QEMU (close to dom0, > tested using simple dd writes) than with tap2 driver. Is that > expected? > How did you measure it? buffered or direct io? -- Pasi > What's best pr...

I''m getting this message (subject line) in daemon.log every time I start or restart xend. I''m not sure if this is related to the fact that I cannot boot up my Windows domU from a VHD file. The Windows domU was working fine with Xen 4.0.0 (with 2.6.32.14 dom0 kernel). When I upgraded to Xen 4.0.1-rc4 (with 2.6.32.16 dom0 kernel), I can no long boot the Windows domU from VHD. The

Have an interesting one here, originally found on xen 4.1.0 but just upgraded to xen 4.1.1 and it''s still here. Creating a VM with a tap2 device pointed at /dev/mapper/something, when that device doesn''t exist, causes the tapdisk2 process to go into D mode and also manages to take out any process that queries it. For example, I have /dev/mapper/nathanxenuk1 as a valid disk and /dev/mapper/test which doesn''t exis...

Hi all, I try to use kernel 2.6.36.1 in HVM but building the drivers xen-blkfront, xenfs, platform-pci. I used Xen 4.0.2-rc1-pre and a DomU is a ubuntu 10.04 and I try with ubuntu 10.10. In boot I receive error "Cannot find a root partition /dev/xvda2" and a prompt (initramfs) appear. In dmesg (initramfs) appear: blkfront: xvda: barriers enabled (tag) xvda: xvda1 vbd vbd-51712: 16

Hi all, I try to use kernel 2.6.36.1 in HVM but building the drivers xen-blkfront, xenfs, platform-pci. I used Xen 4.0.2-rc1-pre and a DomU is a ubuntu 10.04 and I try with ubuntu 10.10. In boot I receive error "Cannot find a root partition /dev/xvda2" and a prompt (initramfs) appear. In dmesg (initramfs) appear: blkfront: xvda: barriers enabled (tag) xvda: xvda1 vbd vbd-51712: 16

Hello list, I'm setting up a virtual network consisting of several UMLs (User Mode Linux) connected with the virtual bridge. Communications works quite well between the host and the virtual machines. Setup: 2 UMLs connected via tap-devices to the bridge (tap1,tap2). The host uses the bridge-device br0 to talk to the clients. Now I want to tcpdump the traffic between host and UML1 on virtual machine UML2. With the standard-settings UML2 only catches the initial ARP-broadcasts (but that's the intended behaviour of the bridge/switch). :-) Now I set &quot...

Hi, spot on! On 6.9.2015 12:56, Pasi K?rkk?inen wrote: > On Sun, Sep 06, 2015 at 09:08:50AM +0200, Karel Hendrych wrote: >> Hi, after migrating to libvirt/libxl according to: >> > > Hi, > >> https://wiki.centos.org/HowTos/Xen/Xen4QuickStart/Xen4Libvirt >> >> I've noticed that my Xen PV domains are being launched by >> qemu-system-i386 running

...start a VM,but I failed.After the command "xl create myqcow2.hvm" is executed,I launch the application of VNC to connect to the VM.On the display screen of VNC,the error of "no bootable device found" occured.In the configure file,I configure the disk like this: diks = [''tap2:tapdisk:qcow2:/....../myqcow2.img,xvda,w''] (I also use "diks = [''tap:qcow2:/....../myqcow2.img,xvda,w'']",but it failed too) How could I solve the error of "no bootable device found"?(I think that maybe my configure of disk is illegal...Here my purpose...

...syslog errors from blktap version 1.0.0. Today i wanted to try version 2 I found on the xen/tools source folder. I compiled the source with make && make install, no problem, but it seems I also need the kernel driver. I''ve tried both 2.6.31.13 and 2.6.32.11 and none has the config TAP2 option, only the TAP. It depends on something to be seen? Or maybe is in another version of the kernel? How can I try blktap2 please... Thanks, Aleix _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users