[Xen-users] Problem with Xen and OCFS2

[Gonçalo Borges <goncalo@xxxxxx>]

Hi All...

I'm testing a Xen solution on an OCFS2 SAN to store VM images.

If I try to save a VM asking to store the file in any Dom0 local dir 
(ex: /tmp) everything works fine, and I can properly restore the VM 
afterwards. Nevertheless, It I try to save a VM asking to store the 
saved file inside the OCFS2 SAN, it fails with the following messages in 
xend.log
---*---

[2009-08-21 14:45:25 xend 9720] DEBUG (XendCheckpoint:89) [xc_save]: 
/usr/lib64/xen/bin/xc_save 26 9 0 0 0
[2009-08-21 14:45:25 xend 9720] DEBUG (XendCheckpoint:322) suspend
[2009-08-21 14:45:25 xend 9720] DEBUG (XendCheckpoint:92) In 
saveInputHandler suspend
[2009-08-21 14:45:25 xend 9720] DEBUG (XendCheckpoint:94) Suspending 9 ...
[2009-08-21 14:45:25 xend.XendDomainInfo 9720] DEBUG 
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-08-21 14:45:25 xend.XendDomainInfo 9720] DEBUG 
(XendDomainInfo:1036) XendDomainInfo.handleShutdownWatch
[2009-08-21 14:45:25 xend.XendDomainInfo 9720] INFO (XendDomainInfo:994) 
Domain has shutdown: name=migrating-one-0 id=9 reason=suspend.
[2009-08-21 14:45:25 xend 9720] INFO (XendCheckpoint:99) Domain 9 suspended.
[2009-08-21 14:45:25 xend 9720] DEBUG (XendCheckpoint:108) Written done
[2009-08-21 14:45:25 xend 9720] INFO (XendCheckpoint:351) Had 0 
unexplained entries in p2m table
[2009-08-21 14:45:25 xend 9720] INFO (XendCheckpoint:351) Saving memory 
pages: iter 1   0%ERROR Internal error: Error when writing to state file 
(5) (errno 14)
[2009-08-21 14:45:25 xend 9720] INFO (XendCheckpoint:351) Save exit rc=1
[2009-08-21 14:45:25 xend 9720] ERROR (XendCheckpoint:133) Save failed 
on domain one-0 (9).
Traceback (most recent call last):
  File "/usr/lib64/python2.4/site-packages/xen/xend/XendCheckpoint.py", 
line 110, in save
    forkHelper(cmd, fd, saveInputHandler, False)
  File "/usr/lib64/python2.4/site-packages/xen/xend/XendCheckpoint.py", 
line 339, in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib64/xen/bin/xc_save 26 9 0 0 0 failed

---*---

It seems I'm not the only one complaining about this issue, according to 
the following threads:
http://lists.xensource.com/archives/html/xen-users/2009-04/msg00670.html
http://lists.xensource.com/archives/html/xen-users/2008-09/msg00948.html

I wonder is there is some workaround for the problem?

Cheers
Goncalo

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