http://bugzilla.kernel.org/show_bug.cgi?id=5299
------- Additional Comments From hubgor@xxxxxxxxx 2005-09-28 11:18 -------
Thx for your tips Eric. I did it. When xfs_io hangs i issued "ps D" in KDB and
backtraced them by "btp process_id" but i don't know how to write its output to
txt file. Do you ? Maybe i should use crash or other tool ?
I cannot to take smb out of the picture becaus i neeed smb shares for copying
data from remote host. I noticed some abnormal execution of kernel pdflush under
local IO to filesystem on the lvm device it sometimes hangs and then xfssyncd
hangs too and after all any IO to this lv aren't possible. Sometimes pdflush
hangs under copying data to smb share and lvcreate or lvremove snapshot at the
same time. I think it could be some bug.
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