Date: Tue, 2 Sep 2003 17:42:25 -0400 (EDT) From: Jeff Roberson <jroberson@chesapeake.net> To: Kevin Oberman <oberman@es.net> Cc: w@dream.vg Subject: Re: Syncer "giving up" on buffers Message-ID: <20030902174105.V12093-100000@mail.chesapeake.net> In-Reply-To: <20030902201929.5D4255D04@ptavv.es.net>
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On Tue, 2 Sep 2003, Kevin Oberman wrote: > > Date: Tue, 2 Sep 2003 10:53:43 +0200 > > From: Jan Srzednicki <winfried@student.agh.edu.pl> > > Sender: owner-freebsd-current@freebsd.org > > > > On Mon, Sep 01, 2003 at 07:53:48PM +0300, Lefteris Chatzibarbas wrote: > > > Hello, > > > > > > 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: > > > > > > Waiting (max 60 seconds) for system process `vnlru' to stop...stopped > > > Waiting (max 60 seconds) for system process `bufdaemon' to stop...stopped > > > Waiting (max 60 seconds) for system process `syncer' to stop...stopped > > > > > > syncing disks, buffers remaining... 8 8 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 > > > giving up on 6 buffers > > > Uptime: 41m20s > > > pfs_vncache_unload(): 1 entries remaining > > > Shutting down ACPI > > > Rebooting... > > > > > > 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.. > > While this seems to impact ext2fs system, the issue of syncer failing > on read-only volumes is also showing up in cases where ext2fs systems > are not present. See reports over the past couple of days on this. > > I can't be sure that these are the same problem, but they sure do look > like the same thing. > The ext2 problem is likely related to a change that I made to ext2 recently. I always unmounted my volumes before rebooting, so I missed this case. The fix is simple. I will look at it tonight. Until then, you just need to unmount your volumes and it should work just fine. I don't know of any general syncer issues outside of this. I doubt it is related to this specific ext2fs bug though. Cheers, Jeff
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