[libvirt-users] Snapshot overlay-file deletion
Hi list, issuing the command "virsh blockcommit --delete --pivot" (on a previously created external snapshot/overlay) returns an error regarding an unsupported flag warning stating "error: unsupported flags (0x2)". I need to manually "rm" the affected file after the blockcommit. A similar issue was reported many years ago here [1]. Am I missing something, or is the "--delete" flag not supported? Thanks. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1001475 -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8
On 08/31/2018 02:17 PM, Gionatan Danti wrote:
Hi list, issuing the command "virsh blockcommit --delete --pivot" (on a previously created external snapshot/overlay) returns an error regarding an unsupported flag warning stating "error: unsupported flags (0x2)". I need to manually "rm" the affected file after the blockcommit.
A similar issue was reported many years ago here [1]. Am I missing something, or is the "--delete" flag not supported?
The qemu driver still does not implement the flag. Yes, it's a known issue for many years now, but it is surprisingly complex to come up with semantics for deletion of an external snapshot in a way that doesn't corrupt data, so no one has tackled that code project. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
Il 31-08-2018 22:23 Eric Blake ha scritto:
The qemu driver still does not implement the flag. Yes, it's a known issue for many years now, but it is surprisingly complex to come up with semantics for deletion of an external snapshot in a way that doesn't corrupt data, so no one has tackled that code project.
Mmm... if I am expected to manually delete the inactive overlay file (after a successful blockcommit --pivot), why can not libvirt/qemu do the same? I mean, a simple rm of the inactive (just commited) file... 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
participants (2)
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Eric Blake -
Gionatan Danti