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From: "Barry Naujok" <bnaujok@melbourne.sgi.com>
Subject: RE: Problem with xfs_repair
Date: Fri, 28 Jul 2006 17:01:01 +1000
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Hi Ralf, 

> -----Original Message-----
> From: xfs-bounce@oss.sgi.com [mailto:xfs-bounce@oss.sgi.com] 
> On Behalf Of Ralf Hildebrandt
> Sent: Friday, 28 July 2006 4:45 PM
> To: xfs@oss.sgi.com
> Subject: Problem with xfs_repair
> 
> xfs_repair gave me this when repairing my / fs using a 
> knoppix boot cd:
> 
> Phase 1 - find and verify superblock...
 [snip]
> 
> fatal error -- can't read block 16777216 for directory inode 167785633
> 
> a) How can I find out which file/directory this inode belongs to?
> b) Can I mark the block defektiv somehow?

You have hit a recent regression that is covered in the FAQ http://oss.sgi.com/projects/xfs/faq.html#dir2

You have two options:
  1. Do the steps in the FAQ
  2. Try the xfs_repair patch I just posted to this list.