Thread (12 messages) 12 messages, 4 authors, 2016-06-26

Re: Internal error xfs_trans_cancel

From: Dave Chinner <david@fromorbit.com>
Date: 2016-06-02 00:26:53
Also in: linux-fsdevel, lkml

On Wed, Jun 01, 2016 at 04:13:10PM +0200, Daniel Wagner wrote:
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Anything in the log before this?
Just the usual stuff, as I remember. Sorry, I haven't copied the whole log.
Just triggered it again. My steps for it are:

- run all lockperf test

  git://git.samba.org/jlayton/lockperf.git

  via my test script:
 
#!/bin/sh

run_tests () {
.....
for c in `seq 8 32 128`; do
    for l in `seq 100 100 500`; do
        time run_tests "posix01 -n $c -l $l "     $DIR/posix01-$c-$l.data
        time run_tests "posix02 -n $c -l $l "     $DIR/posix02-$c-$l.data
        time run_tests "posix03 -n $c -l $l "     $DIR/posix03-$c-$l.data
        time run_tests "posix04 -n $c -l $l "     $DIR/posix04-$c-$l.data
posix03 and posix04 just emit error messages:

posix04 -n 40 -l 100
posix04: invalid option -- 'l'
posix04: Usage: posix04 [-i iterations] [-n nr_children] [-s] <filename>
.....


So I changed them to run "-i $l" instead, and that has a somewhat
undesired effect:

static void
kill_children()
{
        siginfo_t       infop;

        signal(SIGINT, SIG_IGN);
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  kill(0, SIGINT);
        while (waitid(P_ALL, 0, &infop, WEXITED) != -1);
}

Yeah, it sends a SIGINT to everything with a process group id. It
kills the parent shell:

$ ./run-lockperf-tests.sh /mnt/scratch/
pid 9597's current affinity list: 0-15
pid 9597's new affinity list: 0,4,8,12
sh: 1: cannot create /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor: Directory nonexistent
posix01 -n 8 -l 100
posix02 -n 8 -l 100
posix03 -n 8 -i 100

$

So, I've just removed those tests from your script. I'll see if I
have any luck with reproducing the problem now.

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

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