On Wed, 2005-07-13 at 17:55 -0700, Pritpaul Mahal wrote:
> I recently had a hard drive failure, and was able to
> recover everything except about 36 kilobytes. 
> Unfortunately, it seems there was 
> 
> important filesystem data there.  The first time I ran
> fsck, I got a bunch of messages about stuff not being
> referenced or something (unfortunately I didn't have
> the foresight to log the messages :-( so I can't type
> them)  Now when I run fsck, all I get is what I've
> pasted below.  Is there any chance at all of
> recovering anything from the filesystem?

I think you're best chance of recovering anything at this point is to
try to mount the file system read-only, and see what you are able to
read.  I'm afraid any attempt to make fsck complete will result in more
files being lost.

> (I did find this similar message:
> http://www.mail-archive.com/[email protected]/msg01400.html
> but wasn't sure how much of it was relevant so I
> wanted to ask before trying anything)
> 
> fsck.jfs version 1.1.7, 22-Jul-2004
> processing started: 7/13/2005 20.31.55
> The current device is:  /dev/vg0/lvol0
> Open(...READ/WRITE EXCLUSIVE...) returned rc = 0
> Primary superblock is valid.
> The type of file system for the device is JFS.
> Block size in bytes:  4096
> Filesystem size in blocks:  84082688
> **Phase 0 - Replay Journal Log
> LOGREDO:  Log already redone!
> logredo returned rc = 0
> **Phase 1 - Check Blocks, Files/Directories, and 
> Directory Entries
> Duplicate reference to 1 block(s) beginning at offset
> 1462022 found in file system object IA16.
> Duplicate reference to 1 block(s) beginning at offset
> 2255265 found in file system object IA16.
> Inode A16 has references to cross linked blocks.
> Duplicate reference to 4 block(s) beginning at offset
> 2255268 found in file system object IA16.
> Inode A16 has references to cross linked blocks.
> Duplicate reference to 4 block(s) beginning at offset
> 2255284 found in file system object IA16.
> Inode A16 has references to cross linked blocks.
> Duplicate reference to 4 block(s) beginning at offset
> 1462024 found in file system object IA16.
> Inode A16 has references to cross linked blocks.
> Multiple metadata references to 1 blocks beginning at
> offset 1462022 have been detected.
> Multiple metadata references to 4 blocks beginning at
> offset 1462024 have been detected.
> Multiple metadata references to 1 blocks beginning at
> offset 2255265 have been detected.
> Multiple metadata references to 4 blocks beginning at
> offset 2255268 have been detected.
> Multiple metadata references to 4 blocks beginning at
> offset 2255284 have been detected.
> Duplicate block references have been detected in
> Metadata.  CANNOT CONTINUE.
> Filesystem is dirty.
> processing terminated:  7/13/2005 20:31:56  with
> return code: 0  exit code: 4.
> 
> 
> Thanks!
> --Pritpaul
-- 
David Kleikamp
IBM Linux Technology Center



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