On Aug 17, 2007  07:28 -0600, Daniel Leaberry wrote:
> I have an interesting problem. I've made no changes to the IB DDN 
> storage yet I'm finding OST's crashing left and right. The thread 
> watchdog gets triggered,

Note that a watchdog thread stack dump is NOT a crash, but rather a
debugging mechanism so we can see where the thread is stuck for such
a long time.  It should be able to continue working even after this
happens.

> Is there anyway to tune the extent searching code? Does my analysis seem 
> likely? Is this fixed in 1.6.1 such that I should upgrade immediately?

You could increase the watchdog thread timeout (this is currently a
compile time constant), but that won't remove the fact that it is taking
100s to find free space.

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

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