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...rdered data mode dracut: Mounted root filesystem /dev/xvda1 *dracut: chroot: failed to run command `/sbin/load_policy'': No such file or directory* dracut: Switching root *Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100* Pid: 1, comm: switch_root Not tainted 3.7.1-3.el6xen.x86_64 #1 Call Trace: [<ffffffff8149d541>] panic+0xc4/0x1d6 [<ffffffff81047131>] do_exit+0x3a5/0x834 [<ffffffff8111e70f>] ? vfs_write+0xd2/0x10a [<ffffffff8104763d>] do_group_exit+0x7d/0xa5 [<ffffffff8104767c>] sys_exit_group+0x17/0x1b [<ffffffff814a6899>]...

...his means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/mapper/vg_xen-LogVol01 # initrd /initrd-[generic-]version.img #boot=/dev/sdb default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.32.57-2.el6xen.x86_64) root (hd0,0) kernel /xen.gz dom0_mem=1024M cpufreq=xen dom0_max_vcpus=1 dom0_vcpus_pin kernel /vmlinuz-2.6.32.57-2.el6xen.x86_64 ro root=/dev/mapper/vg_xen-LogVol01 rd_NO_LUKS LANG=en_US.UTF-8 rd_LVM_LV=vg_xen/LogVol01 rd_LVM_LV=vg_xen/lv_swap rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=...

...ere is a workaround for it. I run CentOS 6.3 and use dom0 kernel 3.7.1 and Xen from http://au1.mirror.crc.id.au/repo/el6/x86_64/ repository, but I also tried with other 3.x and 2.6.32 kernels and different Xen builds with no luck. GRUB entry: title CentOS Xen kernel IOMMU serial console (3.7.1-3.el6xen.x86_64) root (hd0,0) kernel /xen.gz dom0_mem=1G,max:1G dom0_max_vcpus=1 dom0_vcpus_pin iommu=verbose loglvl=all guest_loglvl=all iommu=1 com1=38400,8n1 console=com1 module /vmlinuz-3.7.1-3.el6xen.x86_64 ro root=/dev/mapper/vg_titan_raid5-lv_titan_root rd_LVM_LV=vg_titan_raid...

...                       ID   Mem VCPUs      State   Time(s) Domain-0                                     0  1024     1     r-----    119.1 [root@localhost oracleteste]# xm info [root@localhost oracleteste]# xm info host                   : localhost.localdomain release                : 2.6.32.57-2.el6xen.x86_64 version                : #1 SMP Fri May 25 14:05:24 EST 2012 machine                : x86_64 nr_cpus                : 2 nr_nodes               : 1 cores_per_socket       : 2 threads_per_core       : 1 cpu_mhz                : 1862 hw_caps                : bfebfbff:20100800:00000000:00000940:...

Hello folks, I have a Xen server running on Centos 6.2 with 3.6.6-1.el6xen.x86_64 as the Dom0 kernel, and i have dedicted 2 CPUs and 4G ram for the Dom0.I have close to 4-5 Virtual machines running on the Xen server. The problem is that for some reason,carrying outany CPU/Disk intensive task on the Dom0 seems to be affecting the DomUs adversly.For ex.i noticed that my D...

On Sat, Sep 26, 2015 at 9:29 PM, Pasi K?rkk?inen <pasik at iki.fi> wrote: > On Sat, Sep 26, 2015 at 09:04:23PM +0300, Pasi K?rkk?inen wrote: >> Hello, >> >> I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: >> > > And third issue aswell: > > 3) Creating an HVM guest using virt-manager with file-based storage uses loopback-mount, not blktap > > When I manually create a new Xen HVM guest...

...ug report and more details. I am using CentOS 6 with this mirrorlist: http://www.crc.id.au/repo/mirrorlist-el6.txt To reproduce: xl save [domid] ./somefile xl restore -d path_to_domU.cfg ./somefile xl reboot [newdomid] xl info: host : xenrotest release : 3.8.2-3.el6xen.x86_64 version : #1 SMP Sat Mar 9 20:43:07 EST 2013 machine : x86_64 nr_cpus : 8 max_cpu_id : 7 nr_nodes : 1 cores_per_socket : 4 threads_per_core : 2 cpu_mhz : 3192 hw_caps : bfebfbff:2...

On Tue, Sep 29, 2015 at 12:37:25PM +0100, George Dunlap wrote: > On Sat, Sep 26, 2015 at 9:29 PM, Pasi K?rkk?inen <pasik at iki.fi> wrote: > > On Sat, Sep 26, 2015 at 09:04:23PM +0300, Pasi K?rkk?inen wrote: > >> Hello, > >> > >> I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: > >> > > > > And third issue aswell: > > > > 3) Creating an HVM guest using virt-manager with file-based storage uses loopback-mount, not blktap > > > > When I m...

...-pciback method does not know how to properly set up MSI-X for the Mellanox ConnectX3 InfiniBand card. To be explicit, I''m running a fairly recent Xen installation (4.1.2) with new Sandy Bridge hardware and a very recent linux kernel (3.9). [root@hp6 xen_tests]# uname -a Linux hp6 3.9.3-1.el6xen.x86_64 #1 SMP Tue May 21 11:55:32 EST 2013 x86_64 x86_64 x86_64 GNU/Linux [root@hp6 xen_tests]# xm info host : hp6 release : 3.9.3-1.el6xen.x86_64 version : #1 SMP Tue May 21 11:55:32 EST 2013 machine : x86_64 nr_cpus : 3...

...(shipped with CentOS - does not support XEN_DOM0): - Screen is fast, but with 640x480 resolution. - Xorg starts with mga driver Kernel 3.0.57-1.el6.elrepo.x86_64 (from elrepo.org - with XEN_DOM0 support) - "CONFIG_DRM_MGAG200" does not exist. - Xorg starts with mga driver Kernel 3.7.1-3.el6xen.x86_64 (from here: https://www.crc.id.au/xen-on-rhel6-scientific-linux-6-centos-6-howto/ [^<https://www.crc.id.au/xen-on-rhel6-scientific-linux-6-centos-6-howto/>] ) - Since "CONFIG_DRM_MGAG200 is not set", screen is fast, but with 640x480 resolution. - Xorg does not start. "Fa...

Hello, I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: 1) virt-manager fails to start with an error: "D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open "/var/lib/dbus/machine-id": No such file or direct...

On Sat, Sep 26, 2015 at 09:04:23PM +0300, Pasi K?rkk?inen wrote: > Hello, > > I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: > And third issue aswell: 3) Creating an HVM guest using virt-manager with file-based storage uses loopback-mount, not blktap When I manually create a new Xen HVM guest using virt-manager, and choose...

...zation-with-xen-on-centos-6.2-x86_64-paravirtualization-and-hardware-virtualization , to install xen: some info is as below: [root@localhost ~]# cat /etc/redhat-release CentOS release 6.2 (Final) After done, my xen can''t start as follows: [root@localhost xen]# uname -r 3.6.6-1.el6xen.x86_64 [root@localhost network-scripts]# xend start xc: error: Could not obtain handle on privileged command interface (2 = No such file or directory): Internal error xend/image.py: Error connecting to hypervisor [root@localhost network-scripts]# xm info Error: Unable to connect to xend: No s...

I had to restart a paravirt guest and could not start over again. It's a xenstore crash? Compiled against library: libvirt 1.0.3 Using library: libvirt 1.0.3 Usando a API: Xen 1.0.3 Hypervisor em execução: Xen 4.2.0 CentOS 6 - x64 Linux eagle 3.9.8-1.el6xen.x86_64 #1 SMP Sat Jun 29 16:23:39 EST 2013 x86_64 x86_64 x86_64 GNU/Linux I've got this error: ... [07.08.2013 08:21:45 3322] INFO (XendDomainInfo: 169) Recreating domain 13, UUID 0a1ddba3-c1d7-5675-9e5d-1b79d02b5ea2. at / local/domain/13 [07.08.2013 08:21:45 3322] WARNING (XendDomainI...

...2015 at 12:37:25PM +0100, George Dunlap wrote: >> On Sat, Sep 26, 2015 at 9:29 PM, Pasi K?rkk?inen <pasik at iki.fi> wrote: >>> On Sat, Sep 26, 2015 at 09:04:23PM +0300, Pasi K?rkk?inen wrote: >>>> Hello, >>>> >>>> I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: >>>> >>> >>> And third issue aswell: >>> >>> 3) Creating an HVM guest using virt-manager with file-based storage uses loopback-mount, not blktap >>>...

On Sat, Sep 26, 2015 at 7:04 PM, Pasi K?rkk?inen <pasik at iki.fi> wrote: > Hello, > > I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: > > > 1) virt-manager fails to start with an error: "D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open "/var/lib/dbus/machine-id": No such f...

...n Xen or maybe bug in BIOS? I run CentOS 6.3 and use dom0 kernel 3.7.1 and Xen from http://au1.mirror.crc.id.au/repo/el6/x86_64/ repository, but I also tried with other 3.x and 2.6.32 kernels and different Xen builds with no luck. GRUB entry: title CentOS Xen kernel IOMMU serial console (3.7.1-3.el6xen.x86_64) root (hd0,0) kernel /xen.gz dom0_mem=1G,max:1G dom0_max_vcpus=1 dom0_vcpus_pin iommu=verbose loglvl=all guest_loglvl=all iommu=1 com1=38400,8n1 console=com1 module /vmlinuz-3.7.1-3.el6xen.x86_64 ro root=/dev/mapper/vg_titan_raid5-lv_titan_root rd_LVM_LV=vg_titan_raid...

...ilt as a module, and it''s preloaded in my initrd. As I understand it though, even w/o VT-d, I should still be able to do PCI passthrough, right? Here''s the config details (pardon the verbosity): from /boot/grub/menu.lst: ... title Red Hat Enterprise Linux Server (2.6.18-92.1.18.el6xen)(Xen-3.3.0) root (hd0,1) kernel /xen-3.3.0.gz iommu=1 vtd=1 module /vmlinuz-2.6.18-92.1.18.el5xen ro root=/dev/VolGroup00/LogVol00 rhgb quiet module /initrd-2.6.18-92.1.18.el5xen.img ... from /etc/modprobe.conf: ... install e100 /sbin/modprobe pciback ; /sbin/modpro...

...with this machine. I followed these instructions (more or less) to set up Dom0 and DomU: http://www.howtoforge.com/virtualization-with-xen-on-centos-6.3-x86_64-paravirtualization-and-hardware-virtualization with the following changes: Host Dom0 (Centos 6.4):xen-4.2.2-4.el6.x86_64kernel-xen-3.9.2-1.el6xen.x86_64libvirt 1.0.3-1 (python-virtinstall causes libvirt to be upgraded to 1.0.3. From checking the source, the Xen patch appears to be there already, so no recompile needed ? the Xen patch doesn?t work with this source anyway.XEND has been disabled from boot up because it causes problems with XL t...

I guess I have stumbled upon a bug in gplpv drivers. If you try to re-enable an nic adapter after disabling it, it just hides out of blue. And you have to reboot. Latest version of gplpv drivers and Windows 2008 R2 here. Anyone else noticed the same issue? I wonder if this is related to hot-plugging something like