Re: SRaid with 13 Disks crashed

On 06/10/2011 10:44 AM, Dragon wrote:
> "fsck automatically calls fsck.ext4 when it sees an ext4 filesystem. 15.4% Notcontiguous == 15.4 fragmented. No lost data."
> -> ok, puh
>
> Now that you have a good filesystem, mounting it and taking a backup would be a good idea. Or at least retrieve any files that are very important to you.
> -> ups
>
> NO! You must use "mdadm --grow". Yes, "--grow" also does "shrink". Your fsck shows that the ext4 filesystem is still sized for the original 12-disk setup, so you don't have to shrink the filesystem. You do have to shrink the raid:
>
> ->mount was successfull and i can see all of my data ;) im so happy, but have still no possibility to make a backup

Yay! :) and Oooo! :(

> Step 1a: Tell mdadm the final size you are aiming for. MD will emulate this while you test that the new size works:
> mdadm /dev/md0 --grow --array-size=16116523456k
> -> shows
> mdadm /dev/md0 --grow --array-size=16116523456k
> mdadm: invalid array size: 16116523456k
>
> might be: 16896000k better? 1500*1024*11

No, it must be "Used Device Size" * 11 = 16116523456. Try it without the 'k'.

Phil
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