Darren J Moffat wrote:
Richard Lowe wrote:
Patrick Petit wrote:
Hi,
Some additional elements. Irrespective of the SCSI error reported
earlier, I have established that Solaris dom0 hangs anyway when a
domU is booted from a disk image located on an emulated ZFS volume.
Has this been also observed by other members of the community? Is
there a known explanation to this problem? What would be the
troubleshooting steps?
The hang I see isn't when booting on a zvol. I see hangs,
intermittently when using a zvol for anything xen related.
The first I saw was while making the proto on a zvol, the second was
while creating a domU on a zvol (not booting it, just the vbdcfg).
I've been utterly unable to get any useful information out of the
machine at that point. I don't drop to the debugger, I *can't* drop
to the debugger, and the machine doesn't respond in any way (even to
3 C-a's, though that maybe a problem on my end).
As I've said elsewhere, I'm still trying to reproduce this in such a
way I can get some kind of information about it (and failing).
I'm not sure what you could do to troubleshoot it.
Do you/can you get into kmdb when this happens? Does sending 3
Control-a's to the console do anything?
Very interesting I given what I posted here yesterday. I was just
using a ZFS file system to store the file backed VBD not a zvol.
File backed disk image on ZFS (like in disk = [
'file:/etc/xen/images/roller.img' ] ) works fine for me.
So, it's not everything zfs/xen related.
# zfs listNAME USED AVAIL REFER MOUNTPOINT
tank 27.6G 5.85G 24.5K /tank
tank/fs1 12.4G 5.85G 12.4G /export/xc
tank/fs2 10.2G 5.85G 10.2G /etc/xen/images
tank/roller 5.04G 5.85G 5.04G -
The symptoms seem very similar. Given that the Xen dom0 bits are
snv_41 based I wonder if the ZFS issues are fixed in a later build.
--
Patrick Petit Sun Microsystems Inc.
Labs, CTO - G2 Systems Exp. ICNC Grenoble (http://icncweb.france)
Phone: (+33)476 188 232 x38232 180, Avenue de l'Europe
Fax: (+33)476 188 282 38334 Saint-Ismier Cedex, France
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