invalid XFS SB magic number

[Ales Komarek <aleaz@xxxxxxxx>]

To whom it may concern,

well I compiled and ran the XFS programs but I got the same error message:

attempting to find secondary superblock...
.................................................................................found 
candidate secondary superblock...
superblock read failed, offset 12884901888, size 2048, ag 4294967295, 
rval 3

fatal error -- Input/output error

I will leave the partition alone for a while; is there any way around 
it? Is there any other way to extract data from the XFS?

Really need any help :(

Ales Komarek

P.S. How do I find out version of xfs_repair I have currently installed?

P.P.S. cfdisk gives me this error message

      FATAL ERROR: Bad primary partition 1: logical partitions overlap
                                      Press any key to exit cfdisk


Eric Sandeen wrote:

> The userspace programs are at:
> ftp://oss.sgi.com/projects/xfs/download/cmd_tars
>
> but xfsprogs (which contains xfs_repair) is at 2.0.6; I will put out a
> newer version in an hour or so.
>
> if you have trouble with newer xfsprogs, send it back to the list; I
> will be out next week.
>
> -Eric
>
> On Mon, 2001-12-31 at 20:20, Ales Komarek wrote:
>  
>
> > hello,
> > sorry that I did not explained the problem better, but I was in time
> > pressure; you were right, the boot manager has probably overwritten
> > superblock of that FS - possibly the whole program got installed there -
> > well, I'll never do stuff like this under pressure again :)))
> >
> > So I tried XFS managing programs which I found in my system (I have
> > Slackware 8.1 kernel 2.4.19-pre10 and XFS patch for this version of 
> > kernel);
> > when I started with XFS I donwloaded some standalone apps too, but 
> > they are
> > stored on that XFS patrition :((
> >
> > Here's the outcome of xfs_repair command:
> >
> > bash-2.05a# xfs_repair /dev/hda3
> > Phase 1 - find and verify superblock...
> > bad primary superblock - bad magic number !!!
> >
> > attempting to find secondary superblock...
> > ............................................................................ 
> >
> > .....found candidate secondary superblock...
> > superblock read failed, offset 12884901888, size 2048, ag 4294967295, 
> > rval 3
> >
> > fatal error -- Input/output error
> >
> > -----------------
> >
> > Well every other XFS related command said errors concernig that magic
> > number, for example xfs_db:
> >
> > bash-2.05a# xfs_db /dev/hda3
> > xfs_db: unexpected XFS SB magic number 0xc4a11da3
> > xfs_db:
> >
> > --------------------
> >
> > Please, if this can be fixed, can you give URL to that utils; because 
> > I'm
> > still quite new to Linux and I have not got familiar with directory
> > structures of it yet :))
> >
> > Thanks a lot for any help;
> >
> > sincirely your's Ales Komarek
> >
> > ----- Original Message -----
> > From: "Eric Sandeen" <sandeen@xxxxxxx>
> > To: "Ales Komarek" <aleaz@xxxxxxxx>
> > Cc: <linux-xfs@xxxxxxxxxxx>
> > Sent: Friday, August 02, 2002 3:40 PM
> > Subject: Re: problem with XFS SB magic number
> >
> >
> >   
> >
> > > The original problem is almost certainly that your boot manager put
> > > something on block zero of your xfs partition; this is where the xfs
> > > superblock lives, so it was corrupted.
> > >
> > > What version of xfsprogs do you have?  I'll make sure the ftp site has
> > > the latest version packaged up; you should get the latest if you don't
> > > have it already.
> > >
> > > If you send the output of your xfs_repair run, that might offer some
> > > hints.
> > >
> > > -Eric
> > >
> > > On Mon, 2001-12-31 at 19:51, Ales Komarek wrote:
> > >     
> > >
> > > > To whom it may concern,
> > > > well I have 2 disks on my machine - one for MS Windows - primary slave
> > > > and other for Linux - primary master (3 partitions; one ext2; 2nd swap
> > > > and third XFS for data) I have installed XOSL (boot manager) on 
> > > > Windows
> > > > HDD and after that during booting pure linux XFS SB magic number error
> > > > occured; I have already uninstalled XOSL, but it did not helped at 
> > > > all;
> > > > the should be no physical errors on disk, but when I tried xfs_repair;
> > > > it found secondary Super block but it was corrupted and the program
> > > > ended with an I/O error;
> > > >
> > > > Please is there any way how to correct this?
> > > >
> > > > Yours sincirely Ales Komarek
> > > >       
> > >
> > > --
> > > Eric Sandeen      XFS for Linux     http://oss.sgi.com/projects/xfs
> > > sandeen@xxxxxxx   SGI, Inc.         651-683-3102
> > >
> > >
> > >