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<div class="moz-cite-prefix">Thanks Michal.<br>
<br>
We scripted a live backup tool using libvirt snapshots + gluster
(with SEEK_HOLE hacks [1]) + block-commit. It works like a sharm.<br>
This is probably the most efficient way to create live backups
available. MicroCheckpointing [2] looks promising too but I'm
worried about its costs.<br>
Its wonderfull to have all this tools like libvirtd and qemu
available. Thanks Fabrice Bellard [3]! Thanks OpenSource!<br>
<br>
We tried the wonderful REST API first. It was really a very good
experience how easy it was to get the expected results, error
messages and supported actions (RSDL).<br>
API was gentle to tell us that live migration was not supported
(VM must be down).<br>
<br>
We finally scripted libvirt directly to have access to all
features, but it would be great to use the REST API whenever
possible to keep consistency and use oVirt Engine as Front-End.<br>
<br>
Have a good one.<br>
<br>
[1] Accessing the bricks directly supports SEEK_HOLE and boosts
performance (sparse image copying takes seconds instead of hours).<br>
[2] <a class="moz-txt-link-freetext" href="http://wiki.qemu.org/Features/MicroCheckpointing">http://wiki.qemu.org/Features/MicroCheckpointing</a><br>
[3] <a class="moz-txt-link-freetext" href="http://en.wikipedia.org/wiki/Fabrice_Bellard">http://en.wikipedia.org/wiki/Fabrice_Bellard</a><br>
<br>
<br>
On 15-05-2015 7:08, Michal Skrivanek wrote:<br>
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cite="mid:2FD5A2F9-97F4-4491-848E-4D2E8510A9ED@redhat.com"
type="cite">
<pre wrap="">
On 13 May 2015, at 05:51, Christopher Pereira wrote:
</pre>
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<pre wrap="">Hi Nir,
I'm interested in using BlockCommit [1].
Can we use it for Clone VM via REST API [2]?
</pre>
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<pre wrap="">
we planned to have Clone VM from VM for running VMs using snapshot&live merge, but due to delays of live merge feature it's not in 3.6.
You can possibly script it yourself via API in latest 3.5.z and EL7
Thanks,
michal
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<pre wrap="">
[1] <a class="moz-txt-link-freetext" href="http://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit">http://wiki.libvirt.org/page/Live-disk-backup-with-active-blockcommit</a>
[2] <a class="moz-txt-link-freetext" href="http://www.ovirt.org/Features/Clone_VM">http://www.ovirt.org/Features/Clone_VM</a>
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</pre>
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