BackupPC-users

Re: [BackupPC-users] Bizarre form of cpool corruption.

2010-12-07 02:48:11
Subject: Re: [BackupPC-users] Bizarre form of cpool corruption.
From: Robin Lee Powell <rlpowell AT digitalkingdom DOT org>
To: Craig Barratt <cbarratt AT users.sourceforge DOT net>
Date: Mon, 6 Dec 2010 23:46:11 -0800
On Mon, Dec 06, 2010 at 11:33:15PM -0800, Craig Barratt wrote:
> Robin,
> 
> > Nope; I'm a big tab completion user, so I would have seen it.  ;)
> > 
> > $ ls -li /backups/cpool/1/5/c/15c0e4b08058ef3704b8fc24887e2bcc*
> > 255523133 -rw-r----- 3 backuppc backuppc 27 Nov 22 19:33 
> > /backups/cpool/1/5/c/15c0e4b08058ef3704b8fc24887e2bcc
> 
> Hmmm.  I'm not familiar with Jeffrey's zLib code.  What happens
> when you compute the digest of this pool file?  Ie:
> 
>     perl /tmp/bpctest.pl /backups/cpool/1/5/c/15c0e4b08058ef3704b8fc24887e2bcc

$     perl /tmp/bpctest.pl /backups/cpool/1/5/c/15c0e4b08058ef3704b8fc24887e2bcc
15c0e4b08058ef3704b8fc24887e2bcc  
/backups/cpool/1/5/c/15c0e4b08058ef3704b8fc24887e2bcc

> Here is another script that computes the BackupPC digest.  You
> might need to modify the library paths.

$ sudo -u backuppc perl /tmp/bpctest2.pl 
/backups/pc/foo--tm50-e00145--tm50-s00339---shared/47/f%2f/fshared/ffoo/fpurchase_order_assets/fbatch_7813/f7105620_done.txt
15c0e4b08058ef3704b8fc24887e2bcc 
/backups/pc/foo--tm50-e00145--tm50-s00339---shared/47/f%2f/fshared/ffoo/fpurchase_order_assets/fbatch_7813/f7105620_done.txt

So, yeah, that's really it.  They're both really there, and that's
the right md5sum, and both the pool file and the original file have
more than 1 hardlink count, and there's no inode match.

No idea how this happened, but I have a lot of them.

-Robin

-- 
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