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Date:      Sat, 7 Apr 2007 15:13:53 +0200
From:      Pawel Jakub Dawidek <pjd@FreeBSD.org>
To:        ticso@cicely.de
Cc:        freebsd-fs@freebsd.org, freebsd-current@freebsd.org
Subject:   Re: ZFS committed to the FreeBSD base.
Message-ID:  <20070407131353.GE63916@garage.freebsd.pl>
In-Reply-To: <20070407025644.GC8831@cicely12.cicely.de>
References:  <20070406025700.GB98545@garage.freebsd.pl> <20070407025644.GC8831@cicely12.cicely.de>

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On Sat, Apr 07, 2007 at 04:56:45AM +0200, Bernd Walter wrote:
> On Fri, Apr 06, 2007 at 04:57:00AM +0200, Pawel Jakub Dawidek wrote:
> > Hi.
> >=20
> > I'm happy to inform that the ZFS file system is now part of the FreeBSD
> > operating system. ZFS is available in the HEAD branch and will be
> > available in FreeBSD 7.0-RELEASE as an experimental feature.
>=20
> I got a kmem panic just by copying a recent ports.tgz (36M) onto a ZFS.
> My sandbox just has 128MB RAM so kmem was set to ~40M.
> After raising kmem to 80M it survived copying the file, but paniced
> again while tar -xvzf the file into the same pool.
> vfs.zfs.vdev.cache.size is unchanged at 10M.

128MB RAM of suggested minimum in ZFS requirements, but it may be not
enough... Minimum of ARC is set to 1/8 of all memory or 64MB (whichever
is more). Could you locate these lines in
sys/contrib/opensolaris/uts/common/fs/zfs/arc.c file:

	/* set min cache to 1/32 of all memory, or 64MB, whichever is more */
	arc_c_min =3D MAX(arc_c / 4, 64<<20);

Change 64 to eg. 32, recompile and retest?

--=20
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd@FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!

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