Date: Tue, 2 Sep 2003 22:16:40 +1000 (EST) From: Bruce Evans <bde@zeta.org.au> To: w@dream.vg Cc: current@freebsd.org Subject: Re: Syncer "giving up" on buffers Message-ID: <20030902220945.V1393@gamplex.bde.org> In-Reply-To: <20030902085343.GF6853@student.agh.edu.pl> References: <20030902085343.GF6853@student.agh.edu.pl>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, 2 Sep 2003, Jan Srzednicki wrote: > On Mon, Sep 01, 2003 at 07:53:48PM +0300, Lefteris Chatzibarbas wrote: > > I have a problem with kernels, built the last couple of days, where > > during shutdown syncer is "giving up" on buffers. During the next boot > > all filesystems are checked because of improper dismount. Here follow > > the exact messages I get: > > ... > > After some testing I found out that this does _not_ happen if I manually > > unmount my ext2 filesystems, before shutting down. In this case syncer > > finishes without any problems. > > I confirm that, same thing happened in my case. But, I had just one > buffer remaining and ext2fs mounted in read-only. It seems that it's not > so read-only then.. Even read-only ext2fs hangs onto the buffers. They are never dirty in the read-only case, but they are busy so the code that waits for all buffers to become non-dirty doesn't even look at them to decide if they are dirty (it waits for them to become non-busy). So even clean but busy buffers prevent a clean shutdown. Bruce
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030902220945.V1393>