Bug 523971 - xm save hangs with kernel-2.6.31-14.fc12 running as a PV guest under RHEL-5.4
Summary: xm save hangs with kernel-2.6.31-14.fc12 running as a PV guest under RHEL-5.4
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 13
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
Depends On:
Blocks: F12VirtTarget
TreeView+ depends on / blocked
Reported: 2009-09-17 12:54 UTC by Jiri Denemark
Modified: 2011-06-27 14:23 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2011-06-27 14:23:36 UTC
Type: ---

Attachments (Terms of Use)

Description Jiri Denemark 2009-09-17 12:54:45 UTC
Description of problem:

An attempt to save a Fedora rawhide PV guest under RHEL-5.4 hangs after issuing suspend request to the guest. With other guests, everything works as expected.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Create and start a PV guest (64b, 1500MB memory, 4 CPUs, 4GB disk)
2. xm save GUEST /some/where
Actual results:

The guest hangs and the save process is stuck waiting on it to suspend.

Expected results:

Working save functionality.

Additional info:

After some investigation, I found out that a suspend request is stored by xend to xenstore database and then xend waits until the guests shuts down, which never happens. As this works for other guests, it's obvious that dom0 kernel forwards the suspend request from xenstore to the guest kernel correctly but apparently doesn't get any response.

Comment 1 Mark McLoughlin 2009-09-17 13:23:56 UTC
jdenemar: is this the same as bug #523937?

Probably makes sense to close bug #523937 as a dup of this one, if so

Comment 2 Jiri Denemark 2009-09-17 13:31:56 UTC
Not really. Despite what is written in the bug description, bug 523937 was tested with an older kernel (2.6.31-0*rc9) and that kernel was able to be saved and even restored. But just once. Another attempt to save that guest failed as described in the bug report.

Comment 3 Bug Zapper 2010-03-15 12:50:23 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 13 development cycle.
Changing version to '13'.

More information and reason for this action is here:

Comment 4 Bug Zapper 2011-06-02 17:44:17 UTC
This message is a reminder that Fedora 13 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 13.  It is Fedora's policy to close all
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Comment 5 Bug Zapper 2011-06-27 14:23:36 UTC
Fedora 13 changed to end-of-life (EOL) status on 2011-06-25. Fedora 13 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
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