From owner-freebsd-hackers@FreeBSD.ORG Sun Jan 23 15:30:16 2005 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1B72D16A4CE for ; Sun, 23 Jan 2005 15:30:16 +0000 (GMT) Received: from darkness.comp.waw.pl (darkness.comp.waw.pl [195.117.238.136]) by mx1.FreeBSD.org (Postfix) with ESMTP id 97CF943D2F for ; Sun, 23 Jan 2005 15:30:15 +0000 (GMT) (envelope-from pjd@darkness.comp.waw.pl) Received: by darkness.comp.waw.pl (Postfix, from userid 1009) id 99AFAACC56; Sun, 23 Jan 2005 16:30:11 +0100 (CET) Date: Sun, 23 Jan 2005 16:30:11 +0100 From: Pawel Jakub Dawidek To: Dmitry Morozovsky Message-ID: <20050123153011.GZ795@darkness.comp.waw.pl> References: <20050123170743.B34546@woozle.rinet.ru> <20050123172929.J34546@woozle.rinet.ru> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="hI0LKvM4dmXJ5Wy2" Content-Disposition: inline In-Reply-To: <20050123172929.J34546@woozle.rinet.ru> User-Agent: Mutt/1.4.2i X-PGP-Key-URL: http://people.freebsd.org/~pjd/pjd.asc X-OS: FreeBSD 5.2.1-RC2 i386 cc: freebsd-hackers@freebsd.org Subject: Re: 5.3-STABLE: handle_workitem_freefile panic X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 23 Jan 2005 15:30:16 -0000 --hI0LKvM4dmXJ5Wy2 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jan 23, 2005 at 05:38:55PM +0300, Dmitry Morozovsky wrote: +> On Sun, 23 Jan 2005, Dmitry Morozovsky wrote: +>=20 +> DM> I'm building debig kernel now and enabling kernel dumps, just to be = sure, but=20 +> DM> it seems some sporadic file system inconsistencies... +>=20 +> Hmmm... it reveals geom_mirror I use (over two SATA drives) both does no= t=20 +> support dumping, and hides underlying ad*[a-h] partitions. Should I gmir= ror=20 +> distinct partitions instead of whole ad4 and ad6? You cannot dump to GEOM providers, especially from rank > 1 geoms. It is better to create more mirrors for every partition you want to mirror (or slice) instead of whole disk. One of the benefits is that gmirror marks mirror as clean if there were no WRITE requests in few seconds, so even after power failure resynchonization is not needed. When you've many smaller mirrors, after unclean shutdown you probably don't need rebuild all mirrors. The argument against could be that when you synchronize many mirrors on the same disks in parallel, your disks are less happy (in one big mirror scenario, disk's heads don't have to jump from one place to another so often). --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --hI0LKvM4dmXJ5Wy2 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFB88MDForvXbEpPzQRAuUAAJ93o/hfa5jZNdiKioPil8I0APtQvwCgw/hI ZAky6nUbgM7rGdY5lROMgrg= =d2Oj -----END PGP SIGNATURE----- --hI0LKvM4dmXJ5Wy2--