On Sat, Apr 27, 2013 at 08:16:02AM +0100, LuVar wrote:
> Hi,
> I have my desktop about 24 hours in "deadlock". I was copying (as root in krusader from USB key (mounted as [1]) data to filesystem [2]) some files from one point to another. Now it is more than 24 hours with sustained disk write, see [3].
>
> How can I help and "debug" this problem? I have 3.5.7 gentoo kernel ([4]).
Hi LuVar,
You could use 'echo w >/proc/sysrq-trigger' to look at which process has
been deadlock.
# echo w >/proc/sysrq-trigger (WARN: you need a root privilege)
# dmesg | vim -
SysRq : Show Blocked State
task PC stack pid father
Here is nothing because my system hasn't any deadlock. Then you could
use 'echo t >/proc/sysrq-trigger' to dump current tasks and their
information. That would be great if you could paste these details in
mailing list. They are very useful for us to dig this problem.
Thanks,
- Zheng
>
> PS: I am an average user, so please by verbose to me.
>
> [1] sudo mount -o rw,uid=luvar,gid=luvar,iocharset=utf8 /dev/sdg1 /mnt/usbstick/
>
> [2]:
> luvar@blacktroja ~ $ mount | grep music
> /dev/mapper/vg-music on /var/lib/mpd/music/local type ext4 (rw,noatime,commit=0)
>
> [3]:
> iotop, two first records :
> 17714 be/3 root 0.00 B/s 0.00 B/s 0.00 % 97.60 % [jbd2/dm-3-8]
> 6546 be/4 root 0.00 B/s 0.00 B/s 0.00 % 93.48 % kdeinit4: kio_file [kdeinit] file local:/tmp/ksocket-root/~-socket local:/tmp/ksocket-root/krusaderZz6431.slave-socket
>
> [4]:
> luvar@blacktroja ~ $ uname -a
> Linux blacktroja 3.5.7-gentoo #1 SMP Sun Oct 28 17:18:07 CET 2012 x86_64 Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz GenuineIntel GNU/Linux
>
> Thanks, LuVar
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