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Date:      Wed, 23 Mar 2016 10:53:58 +0100
From:      Peter Holm <peter@holm.cc>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        Nick Evans <nevans@talkpoint.com>, freebsd-questions@freebsd.org
Subject:   Re: Intel 750 Panic Unmounting During TRIM
Message-ID:  <20160323095358.GA63874@x2.osted.lan>
In-Reply-To: <20160323065745.GV1741@kib.kiev.ua>
References:  <20160322125935.6be25e20@pleiades.nextvenue.com> <20160322202520.GA32179@x2.osted.lan> <20160323065745.GV1741@kib.kiev.ua>

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On Wed, Mar 23, 2016 at 08:57:45AM +0200, Konstantin Belousov wrote:
> On Tue, Mar 22, 2016 at 09:25:20PM +0100, Peter Holm wrote:
> > On Tue, Mar 22, 2016 at 12:59:35PM -0400, Nick Evans wrote:
> > > 
> > > panic: losing buffer 1
> > > cpuid = 2
> This one is interesting.
> 
> > 
> > I see a different panic with this scenario:
> > panic: Lock Per-Filesystem Softdep Lock not exclusively locked @ ../../../ufs/ffs/ffs_softdep.c:1950
> > 
> > https://people.freebsd.org/~pho/stress/log/trim7.txt
> This issue should be fixed by the following patch.
> 
> diff --git a/sys/ufs/ffs/ffs_softdep.c b/sys/ufs/ffs/ffs_softdep.c
> index 04ea39c..bedc8e1 100644
> --- a/sys/ufs/ffs/ffs_softdep.c

Yes, this patch fixes the "Per-Filesystem Softdep Lock" panic.
Still trying to reproduce the "loosing buffer" panic.

- Peter



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