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Date:      Wed, 3 Jan 2007 12:22:42 +0200
From:      Kostik Belousov <kostikbel@gmail.com>
To:        Willem Jan Withagen <wjw@withagen.nl>
Cc:        stable@freebsd.org
Subject:   Re: running mksnap_ffs
Message-ID:  <20070103102242.GB21325@deviant.kiev.zoral.com.ua>
In-Reply-To: <459AE536.5040007@withagen.nl>
References:  <459ABB40.7050603@digiware.nl> <20070102222003.GB90174@in-addr.com> <459AE536.5040007@withagen.nl>

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On Wed, Jan 03, 2007 at 12:05:26AM +0100, Willem Jan Withagen wrote:
> Gary Palmer wrote:
> >On Tue, Jan 02, 2007 at 09:06:24PM +0100, Willem Jan Withagen wrote:
> >>Hi,
> >>
> >>I got the following Filesystem:
> >>Filesystem    Size    Used   Avail Capacity iused     ifree %iused=20
> >>/dev/da0a     1.3T    422G    823G    34%  565952 182833470    0%
> >>
> >>Running of a 3ware 9550, on a dual core Opteron 242 with 1Gb.
> >>The system is used as SMB/NFS server for my other systems here.
> >>
> >>I would like to make weekly snapshots, but manually running mksnap_ffs=
=20
> >>freezes access to the disk (I sort of expected that) but the process=20
> >>never terminates. So I let is sit overnight, but looking a gstat did no=
t=20
> >>reveil any activity what so ever...
> >>The disk was not released, mksnap_ffs could not be terminated.
> >>And things resulted in me rebooting the system.
> >>
> >>So:
> >> - How long should I expect making a snapshot to take:
> >>	5, 15, 30min, 1, 2 hour or even more???
> >> - How do I diagnose the reason why it is not terminating?
> >
> >You forgot to mention what revision of FreeBSD you are running, and
> >if you are using quotas or anything else on the filesystem that
> >could impact this.
>=20
> Yes, I pressed send somewhat to fast:
>=20
> [~] wjw@bigsurf> uname -a
> FreeBSD bigsurf.digiware.nl 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #3: Wed=
=20
> Sep 27 15:57:20 CEST 2006    =20
> wjw@bigsurf.digiware.nl:/usr/obj/usr/src/sys/BIGSURF amd64

See
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kernel=
debug-deadlocks.html
for instruction how to gather information needed to debug the problem.

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