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Date:      Fri, 10 Jun 2005 11:05:00 -0400
From:      Suleiman Souhlal <ssouhlal@FreeBSD.org>
To:        Xin LI <delphij@delphij.net>
Cc:        Jean-Yves Lefort <jylefort@FreeBSD.org>, freebsd-stable <freebsd-stable@FreeBSD.org>, Xin LI <delphij@FreeBSD.org>
Subject:   Re: UFS2 partition with negative used space
Message-ID:  <1634E29D-2A30-477E-A759-991498D404CE@FreeBSD.org>
In-Reply-To: <1118375433.694.1.camel@spirit>
References:  <20050610042211.5d214150.jylefort@FreeBSD.org> <365EB646-B593-4038-9525-D0CC3C00D691@FreeBSD.org> <1118375433.694.1.camel@spirit>

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Hi,

On Jun 9, 2005, at 11:50 PM, Xin LI wrote:

> Hi, Suleiman,
>
> =E5=9C=A8 2005-06-09=E5=9B=9B=E7=9A=84 23:35 -0400=EF=BC=8CSuleiman =
Souhlal=E5=86=99=E9=81=93=EF=BC=9A
>
>> Hi,
>>
> [...]
>
>> It used to be recomputed by the kernel at mount time if the
>> filesystem was dirty, but delphij changed it so that background fsck
>> recomputes it instead. For some reason, in this case, this wasn't
>> enough to synchronize the superblock's cg summary with the actual
>> summary stored in the cgs. I'll have to investigate some more.
>>
>
> Will setting vfs.ffs.compute_summary_at_mount=3D1 before mounting the
> volume help the situation?

Unfortunately, we didn't try that (well, we actually did, but I =20
forgot to tell Jean-Yves to make sure his volume was dirty before =20
mounting it).

--
Suleiman Souhlal     | ssouhlal@vt.edu
The FreeBSD Project  | ssouhlal@FreeBSD.org




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