[PATCH] NEWS: Mention snapshot quiesce rollback bugfix

Peter Krempa pkrempa at redhat.com
Mon Feb 22 14:03:46 UTC 2021


Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
 NEWS.rst | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/NEWS.rst b/NEWS.rst
index 440dbf2601..8d639253ff 100644
--- 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)
 ===================
-- 
2.29.2




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