On Sun, 4 Nov 2007, BERTRAND Joël wrote:
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
Using x86_64 here (Q6600/Intel DG965WH).
Justin.
