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. -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8