10:52 a.m.
My negligence。
--
James Iter
在 2018年3月22日 星期四，下午11:02，Dominik Psenner 写道：
I believe that Your mail went to the wrong recipient. As far as
I'm
concerned it should have been sent to the libvirt-users mailing list,
shouldn't it?
On 2018-03-22 15:55, James Iter wrote:
> Thank your reply.
> I found the method.
> Now, I sharing to you.
> When create snapshot, just add ’no’ value to the ’snapshot’ option with —diskspec.
> As below:
>
> ``` bash
> snapshot-create-as 8x0lbzvS --name sys_disk --disk-only --quiesce --atomic
--diskspec "vda,snapshot=external" --diskspec "vdb,snapshot=no"
> ```
>
>
> --
> James Iter
>
>
> 在 2018年3月21日 星期三，下午6:24，Dominik Psenner 写道：
>
> > (shameless plug)
> >
> > To do automated daily backups of a few machines I wrote a small toolset to get
the job done and make it as less a hassle as you can get. The source is on github
https://github.com/dpsenner/libvirt-administration-tools/. Use it if you find it useful.
> >
> > Note that I have yet not tested it with multiple disks but the tool uses the
output of `virsh dombklst`. In theory that should snapshot all disks of a guest machine.
> >
> > Cheers
> > On Tue, 20 Mar 2018, 19:54 James Iter, <james.iter.cn(a)gmail.com
(mailto:james.iter.cn@gmail.com)> wrote:
> > >
> > > Hi, dear friends.
> > > My guest has two disks, vda and vdb. both are qcow2 local file.
> > > When guest running state.
> > > I want to take the vda snapshot of guest(just vda, no include vdb). but I
met libvirt do snapshot for all disks of guest.
> > >
> > > About methods as follow:
> > > 1、
> > > ``` bash
> > > virsh
> > > snapshot-create-as 8x0lbzvS --name sys_disk3 --disk-only --diskspec
"vda,snapshot=external"
> > > ```
> > > ``` result
> > >
> > > [root@10k03 ~]# ls -lh /opt/Images/*sys_disk3
> > >
> > >
> > > -rw-------. 1 qemu qemu 194K 3月 20 23:27
/opt/Images/00d76a58-9637-4402-9739-21afd1246e06.sys_disk3
> > >
> > >
> > > -rw-------. 1 qemu qemu 704K 3月 20 23:52
/opt/Images/8d582c1c-355a-4297-9434-2f2f562c77df.sys_disk3
> > >
> > >
> > > ```
> > >
> > > 2、
> > > ``` python
> > >
> > > #!/usr/bin/env python
> > >
> > >
> > > # -*- coding: utf-8 -*-
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > import libvirt
> > >
> > >
> > > import libvirt_qemu
> > >
> > >
> > > import json
> > >
> > >
> > > import sys
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > name = sys.argv[1]
> > >
> > >
> > > print name
> > >
> > >
> > > conn = libvirt.open()
> > >
> > >
> > > dom = conn.lookupByName(name)
> > >
> > >
> > >
> > >
> > >
> > >
> > > xml = """
> > >
> > >
> > > <domainsnapshot>
> > >
> > >
> > > <name>sysdisk_by_xml</name>
> > >
> > >
> > > <description>By xml</description>
> > >
> > >
> > > <disks>
> > >
> > >
> > > <disk name='vda' snapshot='external'>
> > >
> > >
> > > </disk>
> > >
> > >
> > > </disks>
> > >
> > >
> > > </domainsnapshot>
> > >
> > >
> > > """
> > >
> > >
> > >
> > >
> > >
> > >
> > > flags = 0
> > >
> > >
> > > flags |= libvirt.VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY
> > >
> > >
> > > flags |= libvirt.VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE
> > >
> > >
> > >
> > >
> > >
> > >
> > > ret = dom.snapshotCreateXML(xmlDesc=xml, flags=flags)
> > >
> > >
> > > ```
> > > ``` result
> > >
> > > [root@10k03 ~]# ls -lh /opt/Images/*sysdisk_by_xml
> > >
> > >
> > > -rw-------. 1 qemu qemu 194K 3月 20 23:52
/opt/Images/00d76a58-9637-4402-9739-21afd1246e06.sysdisk_by_xml
> > >
> > >
> > > -rw-------. 1 qemu qemu 1.2M 3月 21 00:03
/opt/Images/8d582c1c-355a-4297-9434-2f2f562c77df.sysdisk_by_xml
> > >
> > >
> > > ```
> > > 。
> > >
> > >
> > > Then, I searched by google. see your
page(https://www.redhat.com/archives/libvirt-users/2013-June/msg00102.html).
> > >
> > > Now, I want to ask you, have you found the method?
> > >
> > >
> > > --
> > > James Iter
> > >
> > >
> > > _______________________________________________
> > > libvirt-users mailing list
> > > libvirt-users(a)redhat.com (mailto:libvirt-users@redhat.com)
> > > https://www.redhat.com/mailman/listinfo/libvirt-users
> > >
> >
> >
>
>