Bug 963415 - VSS support for qemu-ga-win
Summary: VSS support for qemu-ga-win
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libvirt
Version: 6.5
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: ---
Assignee: Michal Privoznik
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 948017
Blocks: 896690 883504
TreeView+ depends on / blocked
 
Reported: 2013-05-15 18:35 UTC by Dave Allan
Modified: 2016-04-26 16:31 UTC (History)
17 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of: 948017
Environment:
Last Closed: 2013-06-27 15:33:48 UTC
Target Upstream Version:


Attachments (Terms of Use)

Description Dave Allan 2013-05-15 18:35:15 UTC
+++ This bug was initially created as a clone of Bug #948017 +++

When performing online backups, applications are not aware of guest-agent freeze/thaw commands and therefore the filesystem may be in an inconsistent state due to pending disk flushes.

For Linux, there's support for guest-agent hooks on freeze/thaw (Bug 911569), which can be used to notify applications (or stop/start daemons). On Windows, the correct way to handle freeze/thaw is using the VSS API.

Some details about VSS:
http://msdn.microsoft.com/en-us/library/windows/desktop/bb968832%28v=vs.85%29.aspx

--- Additional comment from Ademar de Souza Reis Jr. on 2013-05-15 10:04:10 EDT ---

Update: Hitachi is proposing it upstream. Please review the patch and help them get it merged:

http://lists.gnu.org/archive/html/qemu-devel/2013-02/msg01963.html

Comment 2 Michal Privoznik 2013-05-16 08:25:30 UTC
I don't think there's a need fro any libvirt integration. However, I'll keep an eye on this, if something pops up.

Comment 3 Michal Privoznik 2013-06-27 15:33:48 UTC
I don't see any room for libvirt involvement here as I've stated in comment 2. Since then the nature of the bug hasn't changed so I am closing this one. If somebody disagrees please do reopen.


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