Date: Mon, 27 Nov 2006 14:19:40 -0600 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: ohartman@mail.zedat.fu-berlin.de, freebsd-stable@freebsd.org Subject: Re: Problems unmounting/fssyncking extern UFS filesystem Message-ID: <20061127201940.GD31944@over-yonder.net> In-Reply-To: <20061127183758.GC865@turion.vk2pj.dyndns.org> References: <200611271353.kARDr6tN034491@lurza.secnetix.de> <20061127164119.E63DB45054@ptavv.es.net> <20061127183758.GC865@turion.vk2pj.dyndns.org>
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On Tue, Nov 28, 2006 at 05:37:58AM +1100 I heard the voice of Peter Jeremy, and lo! it spake thus: > > All current Un*x filesystems will automatically flush all buffers as > part of the unmount process That Depends(tm), partly on what you mean by 'unmount'. With my Nov05 and Jun06 -CURRENT's, I had to take great care to sync and sync and wait and sync and sync filesystems before "mount -u -o ro"'ing them, because otherwise they'd end up NOT flushing everything, leaving unreferenced stuff around that fsck had to clean up, but only if I ran it manually because mount DID mark the filesystem as clean. I just tried to reproduce it on my last-week -CURRENT, and it no longer does that. Instead, it locked itself into a "softdep_waitidle: Failed to flush worklist" loop and won't LET me remount r/o (or unmount) the filesystems. Obviously, I should have kept up my now-established habit of sync'ing and waiting a while before un/remounting... -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream.
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