Re: Disk-related hangs since 11.0 upgrade

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sun, Oct 11, 2026 at 10:55:04AM +0300, Staffan Thomen wrote:
> Dear sages of the list!
> 
> I've seen a couple of disk-related(?) hangs after a few days of running
> since my nb11.0/xen 4.20 upgrade. This did not happen on 9.3/4.13.
> 
> When this happens everything still responds to ping, ssh to the dom0 got
> so far as to present me with a password prompt and then nothing.
> 
> I accessed the dom0 via its SOL console (already logged in) and ran xl
> console and it hung in 'rwlock' according to ^T (best feature ever).
> I know xenconsole creates a .lock file for the domain so hence my
> assumpion of disks issues. I could break to ddb and reboot the system.
> 
> As I can access the SOL console and ddb, but don't know how to find out
> what's hanging I would appreciate some suggestions for when this happens
> next.

If you can enter ddb you could use 'ps' to list processes and
their wait channels.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--