[DragonFlyBSD - Bug #847] processes getting stuck on mount point

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Thu Feb 20 07:14:10 PST 2014


Issue #847 has been updated by tuxillo.

Description updated
Category set to Kernel
Target version set to 3.8.0

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Bug #847: processes getting stuck on mount point
http://bugs.dragonflybsd.org/issues/847#change-11790

* Author: corecode
* Status: Feedback
* Priority: Normal
* Assignee: tuxillo
* Category: Kernel
* Target version: 3.8.0
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Hey,

I just experienced the infamous ``cache_lock: blocked on 0xd591d418 ""'' message.  Checking why the process got stuck revealed that the lock is actually being held by another process which is in the process of doing a lstat(2) on /mnt, a nfs mount which server went away.  The stuck process is doing the same, fwiw.

So here it is not a namecache bug, but rather an artifact of nfs being stuck.  Anoying nevertheless.  Anybody have a clue how to fix that?  Yea, mount with -intr.  Why don't we do that per default?

cheers
  simon



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