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Re: XFS: SB validate failed

To: Spam Magnet <spam.wax@xxxxxxxxx>
Subject: Re: XFS: SB validate failed
From: Stefan Smietanowski <stesmi@xxxxxxxxxx>
Date: Tue, 03 Jun 2008 20:59:43 +0200
Cc: Timothy Shimmin <tes@xxxxxxx>, Eric Sandeen <sandeen@xxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <3607657a0806031056w24efa917q625f13bfe9eaa706@xxxxxxxxxxxxxx>
References: <3607657a0805291005k457791cej1c5f867da0f95965@xxxxxxxxxxxxxx> <3607657a0805291446t79808c63l664780c1cbc3d871@xxxxxxxxxxxxxx> <483F907A.3020108@xxxxxxx> <3607657a0805301019h4a49dc86ne8f1f019629a1c41@xxxxxxxxxxxxxx> <4840406F.50402@xxxxxxxxxx> <48408D3E.3090401@xxxxxxxxx> <48409981.1050405@xxxxxxxxxx> <48425148.1080105@xxxxxxxxx> <48427DEE.40400@xxxxxxxxxx> <3607657a0806031036r702ab6a5w7ca6517c19395b9b@xxxxxxxxxxxxxx> <3607657a0806031056w24efa917q625f13bfe9eaa706@xxxxxxxxxxxxxx>
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Spam Magnet wrote:
(The healthy disk image also doesn't have any XFS but it has: 'S f x'
(capital s))

Correcting my mistake:

The healthy image file does have the X F S B at 10000000  (octal) as
fdisk had reported:
Pt#          Device  Info     Start       End   Sectors  Id  System
 8: 2gb-ubuntu.img1            4096   3915599   3911504   a  SGI xfs

4096*512=2097152 (10000000 octal):
$ od -t c 2gb-ubuntu.img | grep 10000000
10000000   X   F   S   B  \0  \0 020  \0  \0  \0  \0  \0  \0  \a   u 350

I tried to see if I can find do the same thing for jaz7.img:
Pt#    Device  Info     Start       End   Sectors  Id  System
 8: jaz7.img1            3072   2091007   2087936   a  SGI xfs

$ od -t c jaz7.img | grep 6000000
6000000  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0  \0

I guess all those zeros are not good signs.

Wait a moment. Aren't jaz sectors 2k each?

Try at 3072*2048 instead.

// Stefan


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