[Xen-users] Xen and GFS

[Jim Klein <jklein@xxxxxxxxxxxxxxxx>]

Does anyone have any pointers with regard to using Xen and storing  
VBDs on a GFS volume under dom0? This sounds like it should work  
well, especially for migrating domains, but it looks as though GFS  
won't allow a read-write mount of a loop device (file) so I end up  
with read only VBDs on the SAN, which are obviously useless. Maybe my  
approach is completely off, but it sounded pretty good up until I  
discovered the lock problem. FYI, the gfs error when mounting is  
listed below.
Thanks in advance for any help or insight.

Output in /var/log/messages:

Apr 18 12:11:23 blade1 kernel: GFS: fsid=alpha:gfs1.0: warning:  
assertion "gfs_glock_is_locked_by_me(ip->i_gl)" failed
Apr 18 12:11:23 blade1 kernel: GFS: fsid=alpha:gfs1.0:   function =  
gfs_prepare_write
Apr 18 12:11:23 blade1 kernel: GFS: fsid=alpha:gfs1.0:   file = /usr/ 
src/build/729060-x86_64/BUILD/xen0/src/gfs/ops_address.c, line = 329
Apr 18 12:11:23 blade1 kernel: GFS: fsid=alpha:gfs1.0:   time =  
1145387483
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