Re: XFS: SB validate failed

["Spam Magnet" <spam.wax@xxxxxxxxx>]

On Tue, Jun 3, 2008 at 2:59 PM, Stefan Smietanowski <stesmi@xxxxxxxxxx> wrote:
> 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
>

I think they are but I used -u option of fdisk:
$ fdisk -ul jaz7.img
Disk jaz7.img (SGI disk label): 255 heads, 63 sectors, 0 cylinders
Units = sectors of 1 * 512 bytes
----- partitions -----
Pt#    Device  Info     Start       End   Sectors  Id  System
 8: jaz7.img1            3072   2091007   2087936   a  SGI xfs
 9: jaz7.img2               0      3071      3072   0  SGI volhdr
11: jaz7.img3               0   2091007   2091008   6  SGI volume

which lists partitions in sector units. As oppose to:

$ fdisk -l jaz7.img

Disk jaz7.img (SGI disk label): 255 heads, 63 sectors, 0 cylinders
Units = cylinders of 16065 * 512 bytes

----- partitions -----
Pt#    Device  Info     Start       End   Sectors  Id  System
 8: jaz7.img1               1       130   2087936   a  SGI xfs
 9: jaz7.img2               0         0      3072   0  SGI volhdr
11: jaz7.img3               0       130   2091008   6  SGI volume