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[Bug 1237794] Re: hard lockup on filserver


OK, after a week of further testing I don't think the issue is resolved.
I am moving about 150GB of data around and the system gives hard locks.

Nothing in the syslog, however I had a top running at failure and the
BTRFS processes went through the roof:

   0    0    0 R 100.0  0.0   0:51.50 [btrfs-transacti]                                                                         
   0    0    0 R  72.1  0.0   0:11.68 [btrfs-flush_del]                                                                         
   0    0    0 S  72.1  0.0   0:17.36 [btrfs-flush_del]                                                                         
   0    0    0 R  57.8  0.0   0:12.34 [btrfs-flush_del]                                                                         
   0    0    0 S  57.5  0.0   0:14.28 [btrfs-flush_del]   

I will remove tag

** Tags removed: kernel-fixed-upstream

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  hard lockup on filserver

Status in “linux” package in Ubuntu:

Bug description:
      My Core i7 18TB BTRFS file server has been upgraded to 13.10 and since doing so locks up frequently.  Previously it never crashed and was only taken down for maintenance, Monday we upgraded to 13.10 and since then it locks up ever 20hrs or so. We were doing a large backup last night and it locked up within 6 or so hrs.

  On the 1st occurrence absolutely nothing was in the logs, on the 2nd
  occurrence there was some NFS hang messages, when system comes back up
  I will check and post any logging information gleaned.

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