[libvirt-users] Locking without virtlockd (nor sanlock)?

[Gionatan Danti]

Il 06-01-2020 10:06 Peter Krempa ha scritto:
> On Fri, Jan 03, 2020 at 14:08:03 +0000, Daniel Berrange wrote:
>> As above, QEMU's locking is good enough to rely on for file based
>> images.

Hi Daniel, thank you for the direct confirmation.

>> The flaws I mention with libvirt might actually finally be something 
>> we
>> have fixed in 5.10.0 with QEMU 4.2.0, since we can finally use 
>> "blockdev"
>> syntax for configuring disks.  Copying Peter to confirm/deny this...
> 
> The main issue was that we were leaking locks on the backing chain. 
> This
> should be now fixed with -blockdev as we call the appropriate apis to
> lock/unlock the images but I didn't try it with virtlockd.
> 
> Certainly if there's still a problem now we have well defined places
> where we know what's happening to images so it should be easy to fix
> them.

Hi Peter, can I ask what do you mean with "fixed with -blockdev"?

Thanks.

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Danti Gionatan
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