thr3ads.net - libvirt users - [libvirt-users] libvirtd does not update VM .xml configurations on filesystem after virsh snapshot/blockcommit [Jun 2019]

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Saso Tavcar

2019-Jun-19 12:18 UTC

[libvirt-users] libvirtd does not update VM .xml configuration on filesystem after virsh blockcommit

Hi,

Recently We've upgraded some KVM hosts from Fedora 29 to Fedora 30 and
now experience broken VM configurations on filesystem after virsh blockcommit.

Commands "virsh dumpxml ..." and "virsh dumpxml --inactive
..." is showing diffrent configuration than the one on filesystem.
In case of restart libvirtd or system reboot, there are broken VM xml
configurations on filesystem.

Everything is OK on Fedora 29 KVM hosts!


0. XML configurations before snapshot is taken (all good, nothing found)

[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml| grep BACK
[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml| grep
backingStore
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
BACK
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
backingStore
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep BACK
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep backingStore



1. When VM snapshot is taken with (all OK)

/usr/bin/virsh --quiet  snapshot-create-as --domain somedomain.com.ncloud ....

there is a change of configuration, active, inactive and filesystem:

- active (virsh dumpxml)

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
BACK
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW'/>

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
backingStore
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>

- inactive (virsh dumpxml --inactive)

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep BACK
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW'/>

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep backingStore
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>


- XML configuration on filesystem has changed

[root@server1 ~]# ls -al /etc/libvirt/qemu/somedomain.com.ncloud.xml
-rw-------. 1 root root 6260 Jun 18 23:00
/etc/libvirt/qemu/somedomain.com.ncloud.xml

[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml |grep BACK
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW'/>
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW'/>

[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml |grep
backingStore
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>
      <backingStore type='file'>
      </backingStore>



2. When VM backup is done, data merged with virsh backcommit ..." and
snapshot deleted (NOT OK!!!)

...
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdd --active --pivot
/usr/bin/virsh --quiet  snapshot-delete --domain somedomain.com.ncloud
somedomain.com.ncloud-SNAPSHOT --metadata


there is a following state of VM configurations:


- active (virsh dumpxml),

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml  somedomain.com.ncloud|grep
BACK ;;; OK

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml  somedomain.com.ncloud|grep
backingStore ;;; why is there empty backingStore left ???
      <backingStore/>
      <backingStore/>
      <backingStore/>
      <backingStore/>

- inactive

[root@server1 qemu]# virsh dumpxml --inactive somedomain.com.ncloud |grep BACK  
;;; OK
[root@server1 qemu]# virsh dumpxml --inactive somedomain.com.ncloud |grep
backingStore  ;;; OK


- XML on filesystem (.xml file on filesystem has not changed/reverted since
snapshot has been taken - NOT OK!!!!, should be cleared of snapshot source file
and backingStore)

[root@server1 ~]# ls -al /etc/libvirt/qemu/somedomain.com.ncloud.xml
-rw-------. 1 root root 6260 Jun 18 23:00
/etc/libvirt/qemu/somedomain.com.ncloud.xml

[root@server1 qemu]# cat somedomain.com.ns2.xml |grep BACK
      <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ns2.qcow2-BACKUPING_NOW'/>

[root@server1 qemu]# cat somedomain.com.ns2.xml |grep backingStore
      <backingStore type='file' index='1'>
      </backingStore>

##############################################################################################################################################################################

- Fedora 29 has libvirt 4.7.0 and qemu 3.0.1:

[root@solaris1 ~]# rpm -qa |grep libvirt-daemon-kvm
libvirt-daemon-kvm-4.7.0-3.fc29.x86_64

[root@solaris1 ~]# rpm -qa |grep qemu-system-x86
qemu-system-x86-core-3.0.1-3.fc29.x86_64
qemu-system-x86-3.0.1-3.fc29.x86_64

- Fedora 30 has libvirt 5.1.0 and qemu 3.1.0:

[root@server1 ~]# rpm -qa |grep libvirt-daemon-kvm
libvirt-daemon-kvm-5.1.0-8.fc30.x86_64

[root@server1 ~]# rpm -qa |grep qemu-system-x86
qemu-system-x86-3.1.0-8.fc30.x86_64
qemu-system-x86-core-3.1.0-8.fc30.x86_64


For every VM from "virsh list" we do following steps (in script) for
VM backup:

/usr/bin/virsh --quiet  domblklist somedomain.com.ncloud
/usr/bin/virsh --quiet  dumpxml --inactive somedomain.com.ncloud >
/Backuping/VMs/Daily/somedomain.com.ncloud.xml

/usr/bin/virsh --quiet  snapshot-create-as --domain somedomain.com.ncloud
somedomain.com.ncloud-SNAPSHOT  --diskspec
sda,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW
--diskspec
sdb,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW
--diskspec
sdc,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW
--diskspec
sdd,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW
--disk-only --atomic --quiesce

/usr/bin/virsh --quiet  snapshot-list somedomain.com.ncloud 

/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2
somedomain.com.ncloud.qcow2
/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2
somedomain.com.ncloud-swap.qcow2
/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2
somedomain.com.ncloud-data1.qcow2
/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2
somedomain.com.ncloud-data2.qcow2

/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sda --active --pivot
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdb --active --pivot
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdc --active --pivot
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdd --active --pivot
/usr/bin/virsh --quiet  snapshot-delete --domain somedomain.com.ncloud
somedomain.com.ncloud-SNAPSHOT --metadata

/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW"
/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW"
/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW"
/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW"

/usr/bin/pigz --best --rsyncable somedomain.com.ncloud.qcow2
/usr/bin/pigz --best --rsyncable somedomain.com.ncloud-swap.qcow2
/usr/bin/pigz --best --rsyncable somedomain.com.ncloud-data1.qcow2
/usr/bin/pigz --best --rsyncable somedomain.com.ncloud-data2.qcow2


There is no error on script (commands) execution:


[root@server1 ~]# /Backuping/bin/simple_KVM_backup.pl --depth 7 --path Daily
--hosting_server server1.somedomain.us

###Backuping VM somedomain.com.ncloud:

+ Moving somedomain.com.ncloud.xml.06 to somedomain.com.ncloud.xml.07.
+ Moving somedomain.com.ncloud.qcow2.gz.06 to somedomain.com.ncloud.qcow2.gz.07.
...

+ Disk snapshot somedomain.com.ncloud-SNAPSHOT for somedomain.com.ncloud ...
Domain snapshot somedomain.com.ncloud-SNAPSHOT created
 Name                       Creation Time               State
-----------------------------------------------------------------------
 somedomain.com.ncloud-SNAPSHOT   2019-06-18 23:00:04 +0200   disk-snapshot

Done!

+ Time scp start : 2019-06-18 23:00:05
somedomain.com.ncloud.qcow2                                                     
100%   20GB 401.3MB/s   00:51
Done!
somedomain.com.ncloud-swap.qcow2                                                
100% 4097MB 483.5MB/s   00:08
Done!
somedomain.com.ncloud-data1.qcow2                                               
100%  100GB 400.7MB/s   04:15
Done!
somedomain.com.ncloud-data2.qcow2                                               
100%  100GB 440.6MB/s   03:52
Done!
+ Time scp end   : 2019-06-18 23:09:14

+ Time blockcommit start : 2019-06-18 23:09:14
Successfully pivoted

Successfully pivoted

Successfully pivoted

Successfully pivoted

+ Time blockcommit end   : 2019-06-18 23:09:16

+ Snapshot delete ... Domain snapshot somedomain.com.ncloud-SNAPSHOT deleted

Done!
+ Delete snapshot files ... Done!

+ Time compress start : 2019-06-18 23:09:17


Regards,
saso

Saso Tavcar

2019-Jun-19 12:23 UTC

head link

[libvirt-users] libvirtd does not update VM .xml configurations on filesystem after virsh snapshot/blockcommit

Hi,

Recently We've upgraded some KVM hosts from Fedora 29 to Fedora 30 and
now experience broken VM configurations on filesystem after virsh blockcommit.

Commands "virsh dumpxml ..." and "virsh dumpxml --inactive
..." is showing diffrent configuration than the one on filesystem.
In case of restart libvirtd or system reboot, there are broken VM xml
configurations on filesystem.

Everything is OK on Fedora 29 KVM hosts!


0. XML configurations before snapshot is taken (all good, nothing found)

[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml| grep BACK
[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml| grep
backingStore
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
BACK
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
backingStore
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep BACK
[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep backingStore



1. When VM snapshot is taken with (all OK)

/usr/bin/virsh --quiet  snapshot-create-as --domain somedomain.com.ncloud ....

there is a change of configuration, active, inactive and filesystem:

- active (virsh dumpxml)

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
BACK
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW'/>

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml somedomain.com.ncloud|grep
backingStore
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>

- inactive (virsh dumpxml --inactive)

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep BACK
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW'/>

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml --inactive
somedomain.com.ncloud|grep backingStore
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>


- XML configuration on filesystem has changed

[root@server1 ~]# ls -al /etc/libvirt/qemu/somedomain.com.ncloud.xml
-rw-------. 1 root root 6260 Jun 18 23:00
/etc/libvirt/qemu/somedomain.com.ncloud.xml

[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml |grep BACK
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW'/>
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW'/>

[root@server1 ~]# cat /etc/libvirt/qemu/somedomain.com.ncloud.xml |grep
backingStore
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>
     <backingStore type='file'>
     </backingStore>



2. When VM backup is done, data merged with virsh backcommit ..." and
snapshot deleted (NOT OK!!!)

...
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdd --active --pivot
/usr/bin/virsh --quiet  snapshot-delete --domain somedomain.com.ncloud
somedomain.com.ncloud-SNAPSHOT --metadata


there is a following state of VM configurations:


- active (virsh dumpxml),

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml  somedomain.com.ncloud|grep
BACK ;;; OK

[root@server1 ~]# /usr/bin/virsh --quiet  dumpxml  somedomain.com.ncloud|grep
backingStore ;;; why is there empty backingStore left ???
     <backingStore/>
     <backingStore/>
     <backingStore/>
     <backingStore/>

- inactive

[root@server1 qemu]# virsh dumpxml --inactive somedomain.com.ncloud |grep BACK  
;;; OK
[root@server1 qemu]# virsh dumpxml --inactive somedomain.com.ncloud |grep
backingStore  ;;; OK


- XML on filesystem (.xml file on filesystem has not changed/reverted since
snapshot has been taken - NOT OK!!!!, should be cleared of snapshot source file
and backingStore)

[root@server1 ~]# ls -al /etc/libvirt/qemu/somedomain.com.ncloud.xml
-rw-------. 1 root root 6260 Jun 18 23:00
/etc/libvirt/qemu/somedomain.com.ncloud.xml

[root@server1 qemu]# cat somedomain.com.ns2.xml |grep BACK
     <source
file='/Virtualization/linux/somedomain.com/somedomain.com.ns2.qcow2-BACKUPING_NOW'/>

[root@server1 qemu]# cat somedomain.com.ns2.xml |grep backingStore
     <backingStore type='file' index='1'>
     </backingStore>

##############################################################################################################################################################################

- Fedora 29 has libvirt 4.7.0 and qemu 3.0.1:

[root@solaris1 ~]# rpm -qa |grep libvirt-daemon-kvm
libvirt-daemon-kvm-4.7.0-3.fc29.x86_64

[root@solaris1 ~]# rpm -qa |grep qemu-system-x86
qemu-system-x86-core-3.0.1-3.fc29.x86_64
qemu-system-x86-3.0.1-3.fc29.x86_64

- Fedora 30 has libvirt 5.1.0 and qemu 3.1.0:

[root@server1 ~]# rpm -qa |grep libvirt-daemon-kvm
libvirt-daemon-kvm-5.1.0-8.fc30.x86_64

[root@server1 ~]# rpm -qa |grep qemu-system-x86
qemu-system-x86-3.1.0-8.fc30.x86_64
qemu-system-x86-core-3.1.0-8.fc30.x86_64


For every VM from "virsh list" we do following steps (in script) for
VM backup:

/usr/bin/virsh --quiet  domblklist somedomain.com.ncloud
/usr/bin/virsh --quiet  dumpxml --inactive somedomain.com.ncloud >
/Backuping/VMs/Daily/somedomain.com.ncloud.xml

/usr/bin/virsh --quiet  snapshot-create-as --domain somedomain.com.ncloud
somedomain.com.ncloud-SNAPSHOT  --diskspec
sda,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW
--diskspec
sdb,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW
--diskspec
sdc,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW
--diskspec
sdd,file=/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW
--disk-only --atomic --quiesce

/usr/bin/virsh --quiet  snapshot-list somedomain.com.ncloud 

/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2
somedomain.com.ncloud.qcow2
/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2
somedomain.com.ncloud-swap.qcow2
/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2
somedomain.com.ncloud-data1.qcow2
/usr/bin/scp -p
server1.somedomain.us:/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2
somedomain.com.ncloud-data2.qcow2

/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sda --active --pivot
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdb --active --pivot
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdc --active --pivot
/usr/bin/virsh --quiet  blockcommit somedomain.com.ncloud sdd --active --pivot
/usr/bin/virsh --quiet  snapshot-delete --domain somedomain.com.ncloud
somedomain.com.ncloud-SNAPSHOT --metadata

/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud.qcow2-BACKUPING_NOW"
/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud-swap.qcow2-BACKUPING_NOW"
/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data1.qcow2-BACKUPING_NOW"
/usr/bin/ssh server1.somedomain.us "/usr/bin/rm
/Virtualization/linux/somedomain.com/somedomain.com.ncloud-data2.qcow2-BACKUPING_NOW"

/usr/bin/pigz --best --rsyncable somedomain.com.ncloud.qcow2
/usr/bin/pigz --best --rsyncable somedomain.com.ncloud-swap.qcow2
/usr/bin/pigz --best --rsyncable somedomain.com.ncloud-data1.qcow2
/usr/bin/pigz --best --rsyncable somedomain.com.ncloud-data2.qcow2


There is no error on script (commands) execution:


[root@server1 ~]# /Backuping/bin/simple_KVM_backup.pl --depth 7 --path Daily
--hosting_server server1.somedomain.us

###Backuping VM somedomain.com.ncloud:

+ Moving somedomain.com.ncloud.xml.06 to somedomain.com.ncloud.xml.07.
+ Moving somedomain.com.ncloud.qcow2.gz.06 to somedomain.com.ncloud.qcow2.gz.07.
...

+ Disk snapshot somedomain.com.ncloud-SNAPSHOT for somedomain.com.ncloud ...
Domain snapshot somedomain.com.ncloud-SNAPSHOT created
Name                       Creation Time               State
-----------------------------------------------------------------------
somedomain.com.ncloud-SNAPSHOT   2019-06-18 23:00:04 +0200   disk-snapshot

Done!

+ Time scp start : 2019-06-18 23:00:05
somedomain.com.ncloud.qcow2                                                     
100%   20GB 401.3MB/s   00:51
Done!
somedomain.com.ncloud-swap.qcow2                                                
100% 4097MB 483.5MB/s   00:08
Done!
somedomain.com.ncloud-data1.qcow2                                               
100%  100GB 400.7MB/s   04:15
Done!
somedomain.com.ncloud-data2.qcow2                                               
100%  100GB 440.6MB/s   03:52
Done!
+ Time scp end   : 2019-06-18 23:09:14

+ Time blockcommit start : 2019-06-18 23:09:14
Successfully pivoted

Successfully pivoted

Successfully pivoted

Successfully pivoted

+ Time blockcommit end   : 2019-06-18 23:09:16

+ Snapshot delete ... Domain snapshot somedomain.com.ncloud-SNAPSHOT deleted

Done!
+ Delete snapshot files ... Done!

+ Time compress start : 2019-06-18 23:09:17


Regards,
saso

Peter Krempa

2019-Jun-20 07:13 UTC

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Re: [libvirt-users] libvirtd does not update VM .xml configurations on filesystem after virsh snapshot/blockcommit

On Wed, Jun 19, 2019 at 14:23:43 +0200, Saso Tavcar
wrote:> Hi,
> 
> Recently We've upgraded some KVM hosts from Fedora 29 to Fedora 30 and
> now experience broken VM configurations on filesystem after virsh
blockcommit.
> 
> Commands "virsh dumpxml ..." and "virsh dumpxml --inactive
..." is showing diffrent configuration than the one on filesystem.
> In case of restart libvirtd or system reboot, there are broken VM xml
configurations on filesystem.
Hi,

this looks like a known problem we dealt with in this thread:

https://www.redhat.com/archives/libvir-list/2019-May/msg00416.html

It took a few backs-and-forths until I understood it so please read the
whole thread.

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