From owner-freebsd-fs@FreeBSD.ORG Thu Mar 29 21:41:12 2007 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id D674D16A406 for ; Thu, 29 Mar 2007 21:41:12 +0000 (UTC) (envelope-from freebsd-fs@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 6485313C455 for ; Thu, 29 Mar 2007 21:41:12 +0000 (UTC) (envelope-from freebsd-fs@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HX2Mg-0002H1-4S for freebsd-fs@freebsd.org; Thu, 29 Mar 2007 23:41:02 +0200 Received: from 83-131-175-241.adsl.net.t-com.hr ([83.131.175.241]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 29 Mar 2007 23:41:02 +0200 Received: from ivoras by 83-131-175-241.adsl.net.t-com.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 29 Mar 2007 23:41:02 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-fs@freebsd.org From: Ivan Voras Date: Thu, 29 Mar 2007 23:40:49 +0200 Lines: 48 Message-ID: References: <20070328100536.S6916@besplex.bde.org> <20070330062726.I2388@besplex.bde.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig5A351F2053C82BEB6673C1A4" X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 83-131-175-241.adsl.net.t-com.hr User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) In-Reply-To: <20070330062726.I2388@besplex.bde.org> X-Enigmail-Version: 0.94.1.2 Sender: news Subject: Re: gvirstor & UFS X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Mar 2007 21:41:12 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig5A351F2053C82BEB6673C1A4 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Bruce Evans wrote: > That is hard to fix. The change to vfs_bio.c to not discard buffer > contents > after a write error (rev.1.196 of vfs_bio.c) may even have been trigger= ed > by this and similar panics in soft updates. However, I think it is a b= ug > for file systems to not be able to deal with i/o errors. Rev.1.196 cou= ld > have reasonably left the buffer alone instead of discarding it as befor= e > or clearing its error indicator and dirty flag as now, so that file sys= tem > code could deal with the error a little later. Then I think the above > panic would still occur, sincs soft updates can't deal with the error. > Soft updates is apparently depending on not even seeing the error. But= > some errors are non-recoverable, so not seeing them is no solution. Ah. It looks like I've again stumbled on a task that needs non-trivial interaction with the UFS (the last time was gjournal, which Pawel thankfully took over and made it work) :( I can probably try solving this one, but I'll need major hand-holding through it since I'm afraid of the UFS code. Any volunteers? --------------enig5A351F2053C82BEB6673C1A4 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGDDJhldnAQVacBcgRAqxlAJ429DbUz2zidKwmetc3FJ1dhbdVOgCgqWSO QQMZ4GUyyDN8XhswMcg23OY= =bpsz -----END PGP SIGNATURE----- --------------enig5A351F2053C82BEB6673C1A4--