Bug 207281 - 10.3-PRERELEASE r295247M hangup
Summary: 10.3-PRERELEASE r295247M hangup
Status: Open
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 10.2-STABLE
Hardware: Any Any
: --- Affects Some People
Assignee: Marius Strobl
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-02-17 16:11 UTC by Henri Hennebert
Modified: 2016-04-04 07:35 UTC (History)
3 users (show)

See Also:


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Description Henri Hennebert 2016-02-17 16:11:14 UTC
When running security/tripwire (compute checksum on all the files), the system is under heavy i/o, the system hangup.

If I compile a kernel with /usr/src/sys/kern/vfs_subr.c at revision 291757
all return to normal.

see also the stable mailing list:
http://docs.freebsd.org/cgi/mid.cgi?56B761A4.7010901

Henri

PS also in 10.3-BETA2.
Comment 1 Thierry Thomas freebsd_committer 2016-02-21 09:24:10 UTC
Please see https://lists.freebsd.org/pipermail/freebsd-stable/2016-February/084180.html .

As suggested by marius@, I have upgrade the affected box to FreeBSD 10.3-BETA2 #0 r295834M with the proposed patch.

So far so good, and I have reactivated the periodic scripts.

But meanwhile I had been playing with ZFS / ARC tuning, and this might have some impacts.

Henri, could you please try this patch and report back?
Comment 2 Henri Hennebert 2016-02-21 18:03:20 UTC
I try the patch and it is OK as I report on the ML

Henri
Comment 3 commit-hook freebsd_committer 2016-02-23 01:09:47 UTC
A commit references this bug:

Author: marius
Date: Tue Feb 23 01:09:35 UTC 2016
New revision: 295905
URL: https://svnweb.freebsd.org/changeset/base/295905

Log:
  In preparation for 10.3-RELEASE, temporarily revert the MFC of r291244
  done as part of r292895 on stable/10 as that change causes hangs with
  ZFS and the cause on at least amd64 so far not understood.
  Discussed with:	kib
  For further information see:
  https://lists.freebsd.org/pipermail/freebsd-stable/2016-February/084045.html

  PR:		207281
  Approved by:	re (gjb)

Changes:
_U  stable/10/
  stable/10/sys/kern/vfs_subr.c
Comment 4 Mark Linimon freebsd_committer freebsd_triage 2016-04-04 07:35:28 UTC
Over to marius, who did the revert.