Justin Piszcz wrote:
# ps auxww | grep D
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 273 0.0 0.0 0 0 ? D Oct21 14:40 [pdflush]
root 274 0.0 0.0 0 0 ? D Oct21 13:00 [pdflush]
After several days/weeks, this is the second time this has happened,
while doing regular file I/O (decompressing a file), everything on the
device went into D-state.
Same observation here (kernel 2.6.23). I can see this bug when I try to
synchronize a raid1 volume over iSCSI (each element is a raid5 volume),
or sometimes only with a 1,5 TB raid5 volume. When this bug occurs, md
subsystem eats 100% of one CPU and pdflush remains in D state too. What
is your architecture ? I use two 32-threads T1000 (sparc64), and I'm
trying to determine if this bug is arch specific.
Regards,
JKB
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