linux-ext4 - sustained write to disk, frozen copy

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Date:	Sat, 27 Apr 2013 08:16:02 +0100 (GMT+01:00)
From:	LuVar <luvar@...intext.sk>
To:	linux-ext4@...r.kernel.org
Subject: sustained write to disk, frozen copy

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]).

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@...cktroja ~ $ 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@...cktroja ~ $ 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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