Block bitmap differences

[Roland Bock]

Hi,

a few weeks ago, an unhealthy combination of firmware in an Adaptec Raid 
controller and Seagate disks damaged my Raid6 filesystem. A bunch of 
files were damaged or lost at that time after the firmaware was updated 
and I had run e2fsck. Luckily, I was able to restore everything from a 
backup. A subsequent check with e2fsck reported no errors.

Yesterday, I ran e2fsck -n again, to see if the system is still OK. It 
isn't and I have no idea how to interpret the messages (see attachment).

What is the meaning and severity of

- Block bitmap differences?
- Free blocks count wrong for group?


Thanks and regards.

Roland


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