Bug#518834: mdadm: I still regulary see these mismatches

[Berni Elbourn]

I see these on my recently upgraded Lenny system which does not have lvm 
on plain old pata:-

Apr 25 10:22:29 queeg mdadm[4704]: RebuildStarted event detected on md 
device /dev/md0
Apr 25 10:25:29 queeg mdadm[4704]: Rebuild20 event detected on md device 
/dev/md0
Apr 25 10:28:29 queeg mdadm[4704]: Rebuild40 event detected on md device 
/dev/md0
Apr 25 10:31:29 queeg mdadm[4704]: Rebuild60 event detected on md device 
/dev/md0
Apr 25 10:33:29 queeg mdadm[4704]: Rebuild80 event detected on md device 
/dev/md0
Apr 25 10:36:04 queeg mdadm[4704]: RebuildFinished event detected on md 
device /dev/md0, component device  mismatches found: 512

Filesystem            Size  Used Avail Use% Mounted on
/dev/md0               46G   29G   16G  66% /
tmpfs                 998M   16K  998M   1% /lib/init/rw
udev                   10M  152K  9.9M   2% /dev
tmpfs                 998M     0  998M   0% /dev/shm
/dev/md2              404G  187G  197G  49% /home

swapon -s
Filename				Type		Size	Used	Priority
/dev/md1                                partition	9767416	0	-1

Linux queeg 2.6.26-1-686 #1 SMP Fri Mar 13 18:08:45 UTC 2009 i686 GNU/Linux

mdadm --version
mdadm - v2.6.7.2 - 14th November 2008


queeg:/var/log# smartctl -l error /dev/hda
smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Error Log Version: 1
No Errors Logged

queeg:/var/log# smartctl -l error /dev/hdd
smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART Error Log Version: 1
No Errors Logged

Can anyone explain what these mismatches are...is my data at risk?

ta

Berni