Subject: kern/8195: amanda hangs in 'D' state
To: None <email@example.com>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 08/12/1999 06:50:51
>Synopsis: amanda hangs in 'D' state
>Responsible: kern-bug-people (Kernel Bug People)
>Arrival-Date: Thu Aug 12 06:50:00 1999
>Originator: email@example.com (Manuel Bouyer)
LIP6, Universite Paris VI
>Release: NetBSD 1.4.1 'final'
1.4.1 (ROBOT) #1: Tue Aug 10 18:15:53 MEST 1999
The amanda backup system works the following way:
several 'dumper' processes collect dumps from clients in parrallel.
These dumps are written to disk (in /var/amanda/place in my setup).
Once a dump is done, the taper process transfers it from disk to
the tape drive.
The problem I have is that since I upgraded my amanda server from 1.3.3
to 1.4.1, after several dumps have been written to disk and then
transfered to tape, the taper process hang in 'D' state:
98 1316 1315 1 -5 0 168 1172 getblk D p0 0:16.33 taper
Any attemps to access the directory where dumps are written
(a subdir of /var/amanda/place) hangs as well in D state:
0 1533 1531 0 -2 0 524 892 vnlock D+ p2 0:00.09 -csh (tcsh)
0 1437 235 0 -2 0 216 128 vnlock D+ p0 0:00.00 ls -l
(these are 'ls -l' in /var/amanda/place/19990812, and a
'ls /var/amanda/place/1<tab>' in tcsh).
Problem also occurs with a 1.4 and -current kernel.
2 core dumps (one of 1.4.1, one of 1.4) of a 'reboot -d -q'
once the system is in this state are available from
For now I'm going to revert back to 1.3.3, as I'm leaving for
a week and I need backups to be done.
I can try patches (preferably for 1.4.1) when I'm back.
Run amanda with a holding disk on a 1.4, 1.4.1 or -current system.