Re: bin/45072 (fsck_ext2fs dosn't work well with ext2fs's without alternate superblocks)

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR bin/45072; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: bin/45072 (fsck_ext2fs dosn't work well with ext2fs's without
 alternate superblocks)
Date: Wed, 22 Jun 2011 04:12:02 +0000

 On Fri, Jun 17, 2011 at 05:35:02PM +0000, Izumi Tsutsui wrote:
  >> Can you clear up with the linux ext2fs folks what the correct behavior of
  >> linux e2fsck should be?
  >  
  >  I'm afraid there is no proper documents other than sources of e2fsprogs.. 
 
 There are, however, ext2/3/4 developers who do frequently answer bug
 reports.
 
 One thing one of them suggested to me: there's a tool in e2fsprogs to
 find superblocks; running that will probably be informative.
 
  >> Another possibility is that
  >> Ubuntu did something ext4-related that our ext2 tools don't understand.
  >  
  >  At least fsck_ext2fs(8) seems to check INCOMPATIBLE FEATURE bits
  >  in superblock. (though I'm not sure how Linux guys take care
  >  of backward compatibititty)
 
 ...right.
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost