Re: KVM incremental backup using CBT

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On Monday 13 October 2014 16:35:15 Thomas Stein wrote:
> Am 13.10.14 16:25, schrieb Eric Blake:
> > On 10/13/2014 03:56 AM, Thomas Stein wrote:
> >> Hello.
> >> 
> >>> blockcommit vm1 vda --active --verbose --pivot
> >> 
> >> That's where libvirt stops working at the moment, right?
> >> 
> >> virsh # blockcommit puppet-test vda --active --verbose --pivot
> >> error: unsupported flags (0x4) in function qemuDomainBlockCommit
> > 
> > Which version of libvirtd is running on the server side? You'll need at
> > least libvirt 1.2.8 to play with active commit.
> 
> Ah cool. Good to know. 1.2.6 running at the moment.

Nice. It works. Just upgraded to 1.2.9.

virsh # snapshot-create-as --domain one sn1 --diskspec 
vda,file=/var/lib/libvirt/images/export/sn1.qcow2 --disk-only --atomic --no-
metadata
Domain snapshot sn1 created

virsh # domblklist one
Target     Source
------------------------------------------------
vda        /var/lib/libvirt/images/export/sn1.qcow2

virsh # blockcommit one vda --active --verbose --pivot
Block Commit: [100 %]
Successfully pivoted
virsh # domblklist one
Target     Source
------------------------------------------------
vda        /opt/libvirt/ssdimages/one.qcow2

virsh #

It's a charming way to make a backup. Is there anything usefull i can make 
with the snapshot i created during this procedure?

cheers
t.


> thanks
> t.
> 
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