2.5.27: Software Suspend failure / JFS errors

From: axel@hh59.org
Date: Sun Jul 21 2002 - 07:29:32 EST


Hi,

I invoked software suspend with kernel 2.5.27 and get the following messages
from kernel:

Stopping tasks: ========================
 stopping tasks failed (3 tasks remaining)
Suspend failed: Not all processes stopped!
Restarting tasks...<6> Strange, jfsIO not stopped
 Strange, jfsCommit not stopped
 Strange, jfsSync not stopped
 done

Afterwards, I have full cpu utilization of the JFS kernel threads:

CPU states: 1.0% user, 99.0% system, 0.0% nice, 0.0% idle
Mem: 126284K total, 97112K used, 29172K free, 0K buffers
Swap: 289160K total, 0K used, 289160K free, 53224K cached

  PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
    7 root 25 0 0 0 0 RW 36.6 0.0 3:56 jfsIO
    8 root 25 0 0 0 0 RW 30.6 0.0 3:56 jfsCommit
    9 root 25 0 0 0 0 RW 29.6 0.0 3:56 jfsSync
  361 root 15 0 972 972 768 R 0.9 0.7 0:00 top
  235 axel 15 0 3064 3064 1928 R 0.0 2.4 0:00 sawfish
  244 axel 15 0 5004 5004 3724 R 0.0 3.9 0:00 panel
  248 axel 15 0 4508 4508 3324 R 0.0 3.5 0:03 gkrellm

And constant activity of VM:

   procs memory swap io system
cpu
 r b w swpd free buff cache si so bi bo in cs us sy
id
 0 0 3 0 29284 0 53224 0 0 61 6 1051 106 2 89
10
 0 0 2 0 29284 0 53224 0 0 0 0 1006 94 0 100
0
 0 0 2 0 29284 0 53224 0 0 0 0 1006 75 1 99
0
 0 0 2 0 29284 0 53224 0 0 0 0 1006 79 1 99
0
 0 0 2 0 29284 0 53224 0 0 0 0 1006 88 1 99
0

I used to have problems with JFS anyway when unpacking big tar archives. The
the system gives an oops and locks up a short while after. The process it is
stuck in is JFSCommit.
I tried latest 2.4 and 2.5, always had the same problems. Strangely JFS
causes no problems at all when I uses the kernel my partitions were
formatted with. That is slackware kernel 2.4.18, jfs 1.0.18. Any kernel
later with jfs versions higher causes these JFSCommit freezes.

I will send an oops report of JFS later.

Regards,
Axel Siebenwirth
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