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Date:      Tue, 28 Nov 2006 00:18:03 +0100
From:      "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de>
To:        Ronald Klop <ronald-freebsd8@klop.yi.org>
Cc:        Peter Jeremy <peterjeremy@optushome.com.au>, freebsd-stable@freebsd.org, "Matthew D. Fuller" <fullermd@over-yonder.net>
Subject:   Re: Problems unmounting/fssyncking extern UFS filesystem
Message-ID:  <456B722B.6010508@mail.zedat.fu-berlin.de>
In-Reply-To: <op.tjo591p68527sy@guido.klop.ws>
References:  <200611271353.kARDr6tN034491@lurza.secnetix.de> <20061127164119.E63DB45054@ptavv.es.net> <20061127183758.GC865@turion.vk2pj.dyndns.org> <20061127201940.GD31944@over-yonder.net> <op.tjo591p68527sy@guido.klop.ws>

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Ronald Klop wrote:
> On Mon, 27 Nov 2006 21:19:40 +0100, Matthew D. Fuller
> <fullermd@over-yonder.net> wrote:
>
>> 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...
>
> IMHO: Please discuss this on freebsd-current@freebsd.org. And read the
> handbook (http://www.freebsd.org/handbook) about
> releases/versions/branches. -CURRENT is known to have bugs.
>
> -- Ronald Klop
>  Amsterdam, The Netherlands


One of the fellows herein told me this discussion is subject to STABLE!

Regards,
Oliver




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