softraid + serverraid locking FS

[elmer]

 cp -dpR lotsfiles2GB /testcopy

                    SMP x335   UP x335
serverraid-serverraid  OK          OK
softraid-softraid      OK          OK
softraid-serverraid    OK          OK
serverraid5E-softraid  SLEEPY
serverraid1E-softraid                PROBLEM

it is redhat AS 2.4.9-25 kernel, SMP kernel for both.

PROBLEM:
  some general FS lock is accuired probably.
  ps axl and top and ls take up to 10-30 seconds to execute
  once heartbeat+softdog got its minute and flushed the whole box

Both computers are identical except one has 1 cpu, oter 2 cpu
2GB memory, bigpages=2100

softraid is raid1, discbox is EXP300, serverraid is 4M
/ is on softraid, sometimes "more /proc/mdstat" gets waiting at last row
for a while.








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