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backup: Prevent snapshots and checkpoints at same time

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Earlier patches mentioned that the initial implementation will prevent
snapshots and checkpoints from being used on the same domain at once.
However, the actual restriction is done in this separate patch to make
it easier to lift that restriction via a revert, when we are finally
ready to tackle that integration in the future.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Eric Blake
2019-07-24 00:17:23 -05:00
parent 3a204b036f
commit 7efe930ec3
7 changed files with 91 additions and 2 deletions
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tools/virsh.pod
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@@ -4669,6 +4669,10 @@ a persistent domain. However, for transient domains, snapshot
metadata is silently lost when the domain quits running (whether
by command such as B<destroy> or by internal guest action).
For now, it is not possible to create snapshots in a domain that has
checkpoints, although this restriction will be lifted in a future
release.
=item B<snapshot-create-as> I<domain> {[I<--print-xml>]
[I<--no-metadata>] [I<--halt>] [I<--reuse-external>]} [I<name>]
[I<description>] [I<--disk-only> [I<--quiesce>]] [I<--atomic>]
@@ -4735,6 +4739,10 @@ If I<--live> is specified, libvirt takes the snapshot while the guest is
running. This increases the size of the memory image of the external
snapshot. This is currently supported only for external full system snapshots.
For now, it is not possible to create snapshots in a domain that has
checkpoints, although this restriction will be lifted in a future
release.
=item B<snapshot-current> I<domain> {[I<--name>] | [I<--security-info>]
| [I<snapshotname>]}
@@ -4943,6 +4951,10 @@ a persistent domain. However, for transient domains, checkpoint
metadata is silently lost when the domain quits running (whether
by command such as B<destroy> or by internal guest action).
For now, it is not possible to create checkpoints in a domain that has
snapshots, although this restriction will be lifted in a future
release.
=item B<checkpoint-create-as> I<domain> [I<--print-xml>]
[I<name>] [I<description>] [I<--quiesce>] [I<--diskspec>] B<diskspec>]...
@@ -4966,6 +4978,10 @@ If I<--quiesce> is specified, libvirt will try to use guest agent
to freeze and unfreeze domain's mounted file systems. However,
if domain has no guest agent, checkpoint creation will fail.
For now, it is not possible to create checkpoints in a domain that has
snapshots, although this restriction will be lifted in a future
release.
=item B<checkpoint-edit> I<domain> I<checkpointname>
Edit the XML configuration file for I<checkpointname> of a domain.