[libvirt-users] Live Snapshot and Rebasing using blockpull
by Andrew Martin
Hello,
I am looking for a solution for live backups of running KVM hosts. I recently read this article which highlights the following method: http://www.linux-kvm.com/content/first-look-virtual-machine-online-disk-s...
1. virsh snapshot-create-as to create the snapshot
2. cp myvm.qcow2 myvm-backup.qcow2 to copy off the now read-only backing image file
3. virsh blockpull to merge the base and snapshot images together into a single image again
Is this functionality only available in qemu 1.1? I am using Ubuntu 12.04 LTS on production servers which only includes qemu 1.0.x. Is there a safe alternative for accomplishing live backups like this on qemu 1.0.x? Is there a minimum version of libvirt that supports this behavior?
Thanks,
Andrew
12 years, 4 months
[libvirt-users] IVSHMEM support
by Shawn Furrow
Hi all,
Does anyone know if Libvirt supports shared memory devices such as IVSHMEM.
I know it didn't at one point but I didn't know if support for it had been
recently added.
Thanks,
Shawn
--
Virginia Tech
Bradley Department of Electrical and Computer Engineering
B.S. Electrical Engineering
B.S. Computer Engineering
12 years, 4 months
[libvirt-users] ANNOUNCE: Oz 0.9.0 Release
by Chris Lalancette
All,
I'm pleased to announce release 0.9.0 of Oz. Oz is a program for
doing automated installation of guest operating systems with limited
input from the user. Release 0.9.0 is a (long overdue) bugfix and
feature release for Oz. Some of the highlights between Oz 0.8.0 and
0.9.0 are:
- Easier to create Debian/Ubuntu packages
- Ability to specify the disk size in the TDL
- Ability to specify the number of CPUs and amount of memory used
for the installation VM
- Cleanup and bugfixes to oz-cleanup-cache
- Ability to install Fedora-17 disk images
- Ability to install guests as a non-root user. This has several
caveats; please see the documentation on
http://github.com/clalancette/oz for more information.
- Ability to install RHEL-6.3 disk images
- Ability to install ScientificLinuxCERN disk images
- Ability to install Mandrake 8.2 disk images
- Ability to install OpenSUSE 10.3 disk images
- Ability to install Ubuntu 12.04 disk images
A tarball of this release is available, as well as packages for
Fedora-16. Instructions on how to get and use Oz are available at
http://github.com/clalancette/oz .
If you have any questions or comments about Oz, please feel free to
contact aeolus-devel(a)lists.fedorahosted.org or me
(clalancette(a)gmail.com) directly.
Thanks to everyone who contributed to this release through bug
reports, patches, and suggestions for improvement.
Chris Lalancette
12 years, 4 months
[libvirt-users] Where does "cmd" initailize in qemu_command.c?
by He Xin
Hi,
Excuse me, I have a question when I reading the libvirt source
codes.
I have known the process of how libvirt start/manage qemu, since I
need to write a driver based on libvirt. But one thing also confused, please
give me some tips.
1.
In qemu_command.c, there is a function call "cmd =
virCommandNewArgList(emulator, "-S", NULL);", which initializes pointer
"cmd". However, I don't find the initial value of "cmd->args", which
represents the input of virFindFileInPath in Util.c. Through
virFindFileInPath, one could find a requested executable file in the PATH
env to start specified hypervisors.
So could you please tell me what the value of args[0] is? Or where does
cmd->args initialize?
2.
In qemu_driver.c, there is a function call "vm =
virDomainFindByUUID(&driver->domains, dom->uuid);", whose returned value
"vm" is important in the next functions. Then we could get the "vm"'s value
in hash.c which is the end part to lookup domains saved in hashtable.
May I know where does HashTable initialize? I mean where can I set the
hashtable's values in detail, if I want to modify some values?
3.
This might be the same as question 1.
In command.c, "execve(cmd->args[0], cmd->args, cmd->env)" is a way
to exec command. About qemu_driver, what is the value of those three inputs?
Thanks a lot!
Regard,
Corey
12 years, 4 months
[libvirt-users] Fwd: vm pxe fail
by Alex Jia
----- Forwarded Message -----
From: "Andrew Holway" <a.holway(a)syseleven.de>
To: "Alex Jia" <ajia(a)redhat.com>
Cc: kvm(a)vger.kernel.org
Sent: Friday, August 17, 2012 4:24:33 PM
Subject: Re: [libvirt-users] vm pxe fail
Hello,
On Aug 17, 2012, at 4:34 AM, Alex Jia wrote:
> Hi Andrew,
> I can't confirm a root reason based on your information, perhaps you may
> try to find a reason by yourself via the following docs:
>
> http://wiki.libvirt.org/page/PXE_boot_%28or_dhcp%29_on_guest_failed (Troubleshooting)
> http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/s... (User Guide)
Everything seems quite normal.
>
> If can't, please provide your version of kvm, libvirt, tftp, etc, and run 'virsh net-dumpxml br0' to dump your
> network bridge XML configuration, and run 'cat pxelinux.cfg' to show your pxelinux configuration, thanks.
default is my pxelinux configuration but I'm not sure is this is what your after.
dhcp is a protocol decode of the DHCP traffic. You see that the VM is sending each request twice which is a bit odd.
[root@node002 ~]# yum list | grep qemu
gpxe-roms-qemu.noarch 0.9.7-6.9.el6 @base
qemu-img.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
qemu-kvm.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
qemu-guest-agent.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
qemu-kvm-tools.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
br0 is created by brctl. There is not XML config as far as I am aware.
[root@node002 ~]# ifconfig br0
br0 Link encap:Ethernet HWaddr 00:9C:02:24:1A:E0
inet addr:10.141.80.2 Bcast:10.141.255.255 Mask:255.255.0.0
inet6 addr: fe80::29c:2ff:fe24:1ae0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:185129 errors:0 dropped:0 overruns:0 frame:0
TX packets:2094 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:8820359 (8.4 MiB) TX bytes:123842 (120.9 KiB)
[root@node002 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:02:C9:36:21:A1
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@node002 ~]# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.009c02241ae0 no eth1
vnet0
virbr0 8000.525400a6d5aa yes virbr0-nic
>
> --
> Regards,
> Alex
>
>
> ----- Original Message -----
> From: "Andrew Holway" <a.holway(a)syseleven.de>
> To: kvm(a)vger.kernel.org
> Sent: Thursday, August 16, 2012 8:25:35 PM
> Subject: [libvirt-users] vm pxe fail
>
> Hallo
>
> I have a kvm vm that I am attempting to boot from pxe. The dhcp works perfectly and I can see the VM in the pxe server arp. but the tftp just times out. I don't see any tftp traffic on either the physical host or on the pie server. I am using a bridged interface. I have tried using several virtual nic drivers, several different mac addresses and several different ips. on the physical host I can get the pxelinux.0 file from the pxe server via tftp and can clearly see that traffic with tcpdump.
>
> Ive tried using various virtual interfaces.
>
> I can pxe boot my physical hosts with no problems.
>
> I can tftp fine from the physical host and see the traffic with ethdump
>
> Here is the terminal output from the VM: https://dl.dropbox.com/u/98200887/Screen%20Shot%202012-08-15%20at%206.41....
>
> Thanks,
>
> Andrew
>
> [root@node002 ~]# yum list | grep qemu
> gpxe-roms-qemu.noarch 0.9.7-6.9.el6 @base
> qemu-img.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
> qemu-kvm.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
> qemu-guest-agent.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
> qemu-kvm-tools.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
>
> [root@node002 ~]# ethtool eth0
> Settings for eth0:
> Supported ports: [ TP ]
> Supported link modes: 10000baseT/Full
> Supports auto-negotiation: No
> Advertised link modes: 10000baseT/Full
> Advertised pause frame use: No
> Advertised auto-negotiation: No
> Speed: Unknown!
> Duplex: Unknown! (255)
> Port: Twisted Pair
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: off
> MDI-X: Unknown
> Supports Wake-on: g
> Wake-on: g
> Current message level: 0x00000014 (20)
> Link detected: no
>
> [root@node002 ~]# brctl show
> bridge name bridge id STP enabled interfaces
> br0 8000.009c02241ae0 no eth1
> vnet0
> virbr0 8000.525400a6d5aa yes virbr0-nic
>
> [root@node002 ~]# ethtool vnet0
> Settings for vnet0:
> Supported ports: [ ]
> Supported link modes:
> Supports auto-negotiation: No
> Advertised link modes: Not reported
> Advertised pause frame use: No
> Advertised auto-negotiation: No
> Speed: 10Mb/s
> Duplex: Full
> Port: Twisted Pair
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: off
> MDI-X: Unknown
> Current message level: 0xffffffa1 (-95)
> Link detected: yes
>
> <domain type='kvm'>
> <name>vm004</name>
> <uuid>4f03b09b-e834-bbf3-a6c2-1689f3156ef2</uuid>
> <memory unit='KiB'>2097152</memory>
> <currentMemory unit='KiB'>2097152</currentMemory>
> <vcpu placement='static'>2</vcpu>
> <os>
> <type arch='x86_64' machine='rhel6.3.0'>hvm</type>
> <boot dev='hd'/>
> </os>
> <features>
> <acpi/>
> <apic/>
> <pae/>
> </features>
> <clock offset='utc'/>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
> <devices>
> <emulator>/usr/libexec/qemu-kvm</emulator>
> <disk type='file' device='disk'>
> <driver name='qemu' type='raw' cache='none'/>
> <source file='/cm/shared/vm/vm004.img'/>
> <target dev='hda' bus='ide'/>
> <address type='drive' controller='0' bus='0' target='0' unit='0'/>
> </disk>
> <disk type='block' device='cdrom'>
> <driver name='qemu' type='raw'/>
> <target dev='hdc' bus='ide'/>
> <readonly/>
> <address type='drive' controller='0' bus='1' target='0' unit='0'/>
> </disk>
> <controller type='usb' index='0'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
> </controller>
> <controller type='ide' index='0'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
> </controller>
> <interface type='bridge'>
> <mac address='00:00:00:00:00:0d'/>
> <source bridge='br0'/>
> <model type='rtl8139'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
> </interface>
> <serial type='pty'>
> <target port='0'/>
> </serial>
> <console type='pty'>
> <target type='serial' port='0'/>
> </console>
> <input type='mouse' bus='ps2'/>
> <graphics type='vnc' port='-1' autoport='yes'/>
> <video>
> <model type='cirrus' vram='9216' heads='1'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
> </video>
> <memballoon model='virtio'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
> </memballoon>
> </devices>
> </domain>
>
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users(a)redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
12 years, 4 months
[libvirt-users] vm pxe fail
by Andrew Holway
Hallo
I have a kvm vm that I am attempting to boot from pxe. The dhcp works perfectly and I can see the VM in the pxe server arp. but the tftp just times out. I don't see any tftp traffic on either the physical host or on the pie server. I am using a bridged interface. I have tried using several virtual nic drivers, several different mac addresses and several different ips. on the physical host I can get the pxelinux.0 file from the pxe server via tftp and can clearly see that traffic with tcpdump.
Ive tried using various virtual interfaces.
I can pxe boot my physical hosts with no problems.
I can tftp fine from the physical host and see the traffic with ethdump
Here is the terminal output from the VM: https://dl.dropbox.com/u/98200887/Screen%20Shot%202012-08-15%20at%206.41....
Thanks,
Andrew
[root@node002 ~]# yum list | grep qemu
gpxe-roms-qemu.noarch 0.9.7-6.9.el6 @base
qemu-img.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
qemu-kvm.x86_64 2:0.12.1.2-2.295.el6_3.1 @updates
qemu-guest-agent.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
qemu-kvm-tools.x86_64 2:0.12.1.2-2.295.el6_3.1 updates
[root@node002 ~]# ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10000baseT/Full
Supports auto-negotiation: No
Advertised link modes: 10000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: Unknown!
Duplex: Unknown! (255)
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Supports Wake-on: g
Wake-on: g
Current message level: 0x00000014 (20)
Link detected: no
[root@node002 ~]# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.009c02241ae0 no eth1
vnet0
virbr0 8000.525400a6d5aa yes virbr0-nic
[root@node002 ~]# ethtool vnet0
Settings for vnet0:
Supported ports: [ ]
Supported link modes:
Supports auto-negotiation: No
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 10Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
MDI-X: Unknown
Current message level: 0xffffffa1 (-95)
Link detected: yes
<domain type='kvm'>
<name>vm004</name>
<uuid>4f03b09b-e834-bbf3-a6c2-1689f3156ef2</uuid>
<memory unit='KiB'>2097152</memory>
<currentMemory unit='KiB'>2097152</currentMemory>
<vcpu placement='static'>2</vcpu>
<os>
<type arch='x86_64' machine='rhel6.3.0'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/cm/shared/vm/vm004.img'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='block' device='cdrom'>
<driver name='qemu' type='raw'/>
<target dev='hdc' bus='ide'/>
<readonly/>
<address type='drive' controller='0' bus='1' target='0' unit='0'/>
</disk>
<controller type='usb' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<interface type='bridge'>
<mac address='00:00:00:00:00:0d'/>
<source bridge='br0'/>
<model type='rtl8139'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='mouse' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes'/>
<video>
<model type='cirrus' vram='9216' heads='1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</memballoon>
</devices>
</domain>
12 years, 4 months
[libvirt-users] error: virsh not could create bridge interface
by Gao Yongwei
hello,
virsh iface-bridge to build bridge interface does not work for me,i've
searched in google but got nothing ,please give some help,thanks.
# VIRSH_DEBUG=0 VIRSH_LOG_FILE=bridge.log virsh iface-bridge eth0 br0
iface-bridge: found option <interface>: eth0
iface-bridge: <interface> trying as interface NAME
libvir: Interface error : Interface not found: couldn't find interface
named 'br0'
libvir: Interface error : internal error could not get interface XML
description: XSLT transformation failed - runtime error: file
/usr/share/netcf/xml/initscripts-get.xsl line 196 element node
error: Failed to define new bridge interface br0
error: internal error could not get interface XML description: XSLT
transformation failed - runtime error: file
/usr/share/netcf/xml/initscripts-get.xsl line 196 element node
# virsh version
Compiled against library: libvir 0.9.10
Using library: libvir 0.9.10
Using API: QEMU 0.9.10
Running hypervisor: QEMU 0.12.1
# cat bridge.log
[2012.08.16 16:16:50 virsh 10895] INFO iface-bridge: found option
<interface>: eth0
[2012.08.16 16:16:50 virsh 10895] DEBUG iface-bridge: <interface>
trying as interface NAME
[2012.08.16 16:16:50 virsh 10895] ERROR Failed to define new bridge
interface br0
[2012.08.16 16:16:50 virsh 10895] ERROR internal error could not get
interface XML description: XSLT transformation failed - runtime error:
file /usr/share/netcf/xml/initscripts-get.xsl line 196 element node
this is some debug log from /var/log/libvirt/libvirtd.log:
2012-08-16 08:54:25.724+0000: 11526: debug :
virInterfaceDefineXML:10794 : conn=0x7f963c0009c0, xml=<?xml
version="1.0"?>
<interface type="bridge" name="br0">
<start mode="onboot"/>
<protocol family="ipv4">
<ip address="118.123.12.65" prefix="25"/>
<route gateway="118.123.12.1"/>
</protocol>
<bridge stp="on" delay="0"><interface type="ethernet" name="eth0"><mac
address="00:30:48:D9:F7:EE"/></interface></bridge></interface>
, flags=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollCleanupTimeouts:506 : Cleanup 3
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollCleanupHandles:554 : Cleanup 8
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=0 w=1, f=7 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=1 w=2, f=9 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=2 w=3, f=12 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=3 w=4, f=13 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=4 w=5, f=6 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=5 w=6, f=16 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=6 w=7, f=15 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollMakePollFDs:383 : Prepare n=7 w=8, f=17 e=1 d=0
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollCalculateTimeout:325 : Calculate expiry of 3 timers
2012-08-16 08:54:25.724+0000: 11523: debug :
virEventPollCalculateTimeout:351 : Timeout at 0 due in -1 ms
2012-08-16 08:54:25.724+0000: 11523: debug : virEventPollRunOnce:619 :
EVENT_POLL_RUN: nhandles=8 imeout=-1
2012-08-16 08:54:25.730+0000: 11526: error : interfaceDefineXML:425 :
internal error could not get interface XML description: XSLT
transformation failed - runtime error: file
/usr/share/netcf/xml/initscripts-get.xsl line 196 element node
thanks.
12 years, 4 months
[libvirt-users] What can cause "libvirtd dead but pid file exists."
by xuanmao_001
Hi,
# service libvirtd status
libvirtd dead but pid file exists.
I operated VMs(like create, edit, delte) normally for a second, but the libvirtd on host was dead.
I checked the libvirtd.log but didn't find any useful information. so I want to know what can cause the problem?
another question:
I found the message in /var/log/message like "libvirtd: Could not find keytab file: /etc/libvirt/krb5.tab: Permission denied."
what is going wrong?
my libvirt version: 0.9.8.
xuanmao_001
12 years, 4 months
[libvirt-users] Source of Qcow2 Image Corruption
by Andrew Martin
Hello,
I have two KVM virtual machine nodes in a high-availability cluster using Pacemaker + Heartbeat on Ubuntu 10.04 Server amd64. This cluster hosts a single Ubuntu 10.04 VM which uses a qcow2 image file, myvm.qcow2, with a backing file, backingfile.qcow2. This morning, the VM suddenly powered off. I attempted to start it again with virsh start domain, but it would only start briefly and then power off again. I checked the qcow2 disk image and found countless corruption errors:
root@vmhost:/mnt/storage/vmstore/disks# qemu-img info myvm.qcow2
image: myvm.qcow2
file format: qcow2
virtual size: 9.8G (10485760000 bytes)
disk size: 13G
cluster_size: 65536
backing file: backingfile.qcow2 (actual path: backingfile.qcow2)
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK
1.5G 2056-05-05 21:01:212795663:45:42.642
/archive/1006/20100627000/2il_root/save/archive/1002/20100204005/1 743M 1995-08-16 12:47:352289751:06:20.183
root@vmhost:/mnt/storage/vmstore/disks# qemu-img check myvm.qcow2 2>&1 | head
ERROR OFLAG_COPIED: offset=80000002047d0000 refcount=0
ERROR OFLAG_COPIED: offset=8000000212e50000 refcount=0
ERROR OFLAG_COPIED: offset=80000001ffde0000 refcount=0
ERROR OFLAG_COPIED: offset=80000001ff710000 refcount=0
ERROR OFLAG_COPIED: offset=8000000216ec0000 refcount=0
ERROR OFLAG_COPIED: offset=8000000206db0000 refcount=0
ERROR OFLAG_COPIED: offset=80000001ff720000 refcount=0
ERROR OFLAG_COPIED: offset=80000001ffdf0000 refcount=0
ERROR OFLAG_COPIED: offset=8000000212e60000 refcount=0
ERROR OFLAG_COPIED: offset=8000000212e70000 refcount=0
root@vmhost:/mnt/storage/vmstore/disks# qemu-img info backingfile.qcow2
image: backingfile.qcow2
file format: qcow2
virtual size: 9.8G (10485760000 bytes)
disk size: 4.8G
cluster_size: 65536
root@vmhost:/mnt/storage/vmstore/disks# qemu-img check backingfile.qcow2
No errors were found on the image.
If I use qemu-img to convert the image, the resulting image is "clean":
# convert myvm.qcow2 -O qcow2 /tmp/test.qcow2
# qemu-img check /tmp/test.qcow2
No errors were found on the image.
I had this corruption happen a month ago to a different VM on the same machine but a different physical drive, so I do not believe it to be a physical disk failure. I can find nothing in /var/log that gives any more information related to this corruption. What other debug information can I provide to diagnose why these images are getting corrupted and taking these running VMs offline?
Thanks,
Andrew Martin
12 years, 4 months
