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Date:      Tue, 25 Apr 2006 00:24:07 +0400 (MSD)
From:      Dmitry Morozovsky <marck@rinet.ru>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        stable@freebsd.org
Subject:   Re: fsck_ufs locked in snaplk
Message-ID:  <20060425001751.S44618@woozle.rinet.ru>
In-Reply-To: <20060424181531.GA13774@xor.obsecurity.org>
References:  <20060423193208.N1187@woozle.rinet.ru> <20060423201732.GA74905@xor.obsecurity.org> <20060424091803.L20593@woozle.rinet.ru> <20060424215650.P36233@woozle.rinet.ru> <20060424181531.GA13774@xor.obsecurity.org>

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On Mon, 24 Apr 2006, Kris Kennaway wrote:

KK> > What bothers me most is that it is the only machine reproducibly hangs in 
KK> > snapshots, and it did not hang before RELENG_5 -> RELENG_6 upgrade. Other 
KK> > RELENG_6 machines do snapshot backups flawlessly (knock-on-wood!)
KK> 
KK> Are you quite certain it's running up-to-date RELENG_6_1?  All known
KK> snapshot deadlock issues were believed to have been fixed a few weeks
KK> ago.  If so, we might need you to enable extra debugging to track this
KK> down.

Yes, I'm sure it's recent RELENG_6_1:

marck@office:/usr/src> cvs stat sys/ufs/ffs/ffs_snapshot.c 
===================================================================
File: ffs_snapshot.c    Status: Up-to-date

   Working revision:    1.103.2.5
   Repository revision: 1.103.2.5       /home/ncvs/src/sys/ufs/ffs/ffs_snapshot.c,v
   Sticky Tag:          RELENG_6_1 (branch: 1.103.2.5.2)
   Sticky Date:         (none)
   Sticky Options:      (none)

marck@office:/usr/src> cvs -R up
P etc/rc.d/SERVERS
P release/doc/en_US.ISO8859-1/errata/article.sgml
P release/doc/en_US.ISO8859-1/relnotes/common/new.sgml
P release/doc/share/sgml/release.ent
P release/doc/zh_CN.GB2312/errata/article.sgml
P release/doc/zh_CN.GB2312/relnotes/common/new.sgml
P sys/amd64/amd64/identcpu.c
P sys/amd64/amd64/initcpu.c
P sys/amd64/amd64/pmap.c
P sys/amd64/include/md_var.h
P sys/amd64/include/specialreg.h
P sys/i386/i386/identcpu.c
P sys/i386/i386/initcpu.c
P sys/i386/include/md_var.h
P sys/i386/include/specialreg.h
P sys/ia64/ia64/nexus.c

(all these changes are non-relevant, are they?)

I'll try to build DDB kernel tomorrow evening to check. Which commands should I 
issue in ddb ?

Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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