Re: XFS: SB validate failed

[Stefan Smietanowski <stesmi@stesmi.com>]

Spam Magnet wrote:
>> As Eric said.
>> We chose the ondisk format to have the byte ordering of IRIX so
>> it should not be a problem. However, parts of the log code in Linux
>> does not do the necessary endian conversion (due to lack of info at
>> the relevant points - it only knows as blobs of data) and so you
>> need the log to be clean. i.e. byte ordering problem just for the log.
>>
> 
> Thanks for this info, it's good to have 1 less problem to worry about :)
> 
>> OOI, as Eric asked, how were you able to mount it all of a sudden?
>>
> 
> I am not sure, as I said, to narrow down the problem I am experiencing
> with other disks, I decided to format an empty, healthy disk under Irix and
> try to mount it under Linux. The first try was not successful but the
> second was.
> 
> Right now I am making an image of the good/healthy disk using dd to
> see if I can mount that
> image under Linux. (It's not fun to copy 2GB disks through a
> USB1.1-SCSI adapter :)
> My ultimate goal is to make image of the disks that do have
> partition table but refuse to mount under either OS (magic number and
> SB validattion failure).
> I am hoping I can edit the disk image in order to get the data back.

Are you dd'ing the whole disk or just the partition(s) you want ? I
recommend just doing the partition(s) into seperate files. I'm uncertain
if loopback nowadays handles partitions or not. I know it didn't before
but there were patches back then.

// Stefan