Date: Fri, 27 Apr 2007 16:26:06 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Bakul Shah <bakul@bitblocks.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS: kmem_map too small panic again Message-ID: <20070427142606.GK49413@garage.freebsd.pl> In-Reply-To: <20070426223535.GC45366@garage.freebsd.pl> References: <20070426213347.C3A7C5B58@mail.bitblocks.com> <20070426223535.GC45366@garage.freebsd.pl>
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--GU3/x65mZ6MFE8p3 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Apr 27, 2007 at 12:35:35AM +0200, Pawel Jakub Dawidek wrote: > On Thu, Apr 26, 2007 at 02:33:47PM -0700, Bakul Shah wrote: > > An update: > >=20 > > I reverted sources to to Apr 24 16:49 UTC and rebuilt the > > kernel and the bug goes away -- I was able to restore 53GB > > (840K+ inodes) and do a bunch of du with no problems. > >=20 > > But the bug remains on a kernel with the latest zfs changes. > > All I have to do run du a couple of times in the restored > > tree to crash the system. There is no crash with multiple du > > on a similarly sized UFS2, only on ZFS. This is on a > > Athlon64 X2 Dual Core Processor 3800+ running in 32 bit mode. > > The exact message is: > >=20 > > panic: kmem_malloc(98304): kmem_map too small: 335478784 total allocated >=20 > I can reproduce it and I'm working on it. The problem is that kern.maxvnodes are tuned based on vnode+UFS_inode size. In case of ZFS, the size of vnode+ZFS_znode_dnode+dmu_buf is larger. As a work-around just decrease kern.maxvnodes to something like 3/4 of the current value. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --GU3/x65mZ6MFE8p3 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFGMgf+ForvXbEpPzQRAlQyAKDWu+xBxhb90u8ZEFHgNRoVmBX8QQCgh0Qi qn5odWRwjoRJo5B1vZS/494= =ZWMr -----END PGP SIGNATURE----- --GU3/x65mZ6MFE8p3--
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