NEWS: Mention snapshot quiesce rollback bugfix

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

diff --git a/NEWS.rst b/NEWS.rst
index 440dbf260162a2f3f74f3e71cefe9562f8045d79..8d639253ffba610ba65ce20f75f3bc23cf2501bf 100644 (file)
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -51,6 +51,20 @@ v7.1.0 (unreleased)
 
 * **Bug fixes**
 
+  * qemu: Fix disk quiescing rollback when creating external snapshots
+
+   If the qemu guest agent call to freeze filesystems failed when creating
+   an external snapshot with ``VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE`` flag the
+   filesystems would be unconditionally thawed. This could cause problems when
+   the filesystems were frozen by an explicit call to ``virDomainFSFreeze``
+   since the guest agent then rejects any further freeze attempts once are
+   filesystems frozen, an explicit freeze followed by a quiesced snapshot
+   would fail and thaw filesystems.
+
+   Users are also encouraged to use ``virDomainFSFreeze/Thaw`` manually instead
+   of relying on ``VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE`` if they need finer
+   grained control.
+
 
 v7.0.0 (2021-01-15)
 ===================