xfs
[Top] [All Lists]

XFS dying when many processes copy many files/directories

To: linux-xfs@xxxxxxxxxxx
Subject: XFS dying when many processes copy many files/directories
From: cradeke <chrad@xxxxxxxxxxxxxxxxxx>
Date: Thu, 27 Dec 2001 13:25:52 +0100
Sender: owner-linux-xfs@xxxxxxxxxxx
Adrian Head wrote:

> have top running in another console.  When the machine hangs - there
are no
> messages in the logs or on screen.  The only indication is that there
is no
> disk activity and that top shows that all the cp processes are in "D"
state.
> 9 times out of 10 kupdated is still shown as running in top.  - --
> Adrian Head

Interesting thing...  Some people (including me) have seen this
myserious
kupdated runnings on smp machines only. Maybe there is something wrong
with
filehandling.. something like that a deadlock occures. I can reproduce
it when I
write to a nearly full xfs. 1% left but only on one of my partitions...
it is
the last one. Another partition which is the first one at the same disc
can be
filled up to 100%. Some people wrote that the problem went away if they
running
a single cpu kernel. Your simple test shows that there is a real problem
with
xfs which should be solved quickly. After such a kupdated amok running
opened
files are filled with @'s and any change or creation of new files are
lost. I
saw this with 2.4.2 / 2.4.5 smp-kernels and with xfs-1.0 / 1.01.

regards

c. radeke


<Prev in Thread] Current Thread [Next in Thread>