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xfsdump stuck in io_schedule

To: linux-xfs@xxxxxxxxxxx
Subject: xfsdump stuck in io_schedule
From: Zlatko Calusic <zlatko.calusic@xxxxxxxx>
Date: Fri, 15 Nov 2002 11:15:29 +0100
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This is my first post to linux-xfs, so please be gentle.  First of
all, I would like to thank you guys for bringing us such a high
performance file system.  And thanks SGI for making it GPL.

Back to the subject, recently I converted all my FS-es from ext3 to
xfs, and now I'm trying to convert my old backup script (which used
dump) to work w/ xfs. But I'm having problems with xfsdump, sooner or
later it will block in uninterruptible sleep, and dmesg shows lots of:

xfsdump: page allocation failure. order:0, mode:0x0
xfsdump: page allocation failure. order:0, mode:0x0

% ps axo pid,command,state,wchan | grep xfsdump
 5442 xfsdump D io_schedule

The process is, of course, unkillable.  Dump was started to a file on
a different disk.  Same problem happens on two different machines,
where one is UP, second is SMP.  Kernel is (virgin) 2.5.47 on both.
If you need any further info, please don't hesistate to ask.

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