[libvirt-users] Questions and a blockpull issue

Abbas akhan at phi9.com
Mon Oct 22 21:08:40 UTC 2012

On 10/23/2012 12:51 AM, Eric Blake wrote:
> The qemu side is in qemu.git, and will be released in December as part
> of qemu 1.3.  The libvirt side is in libvirt.git, and will be released
> in November as part of libvirt 1.0.0.  But you are correct that there
> are no released versions that support blockcommit yet.
I think I can survive with blockpull for now. Thanks for confirming :)

> For snapshots, that all depends on what you want to do with the snapshot
> - if you want to ever revert to the snapshot (and boot from that state),
> then quiescing makes sense; but if snapshots is only an intermediate
> step as part of a larger sequence of operations and you will then remove
> the intermediate files via blockpull and/or blockcommit, then quiescing
> is not necessary.
> Thankfully, live snapshot, live block pull, and live block commit have
> all been designed to avoid image corruption while qemu continues to run.
This is really awesome. Been waiting for something like this since ages.
Gives libvirt+kvm quite a good competitive edge over its counterparts.
>> The Fedora wiki currently shows the reverse argument order.
>> http://fedoraproject.org/wiki/Features/Virt_Live_Snapshots
> Thanks for the pointer; I'm updating that page now.

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