Re: Recover array after I panicked

[Phil Turmel <philip@turmel.org>]

On 04/24/2017 05:56 PM, Patrik Dahlström wrote:
> On 04/24/2017 11:04 PM, Phil Turmel wrote:

>> Thanks for the patch.  Could you elaborate a bit on the errors you
>> received so I can reproduce and document this fully?
> Sure. It started out with this error:
> $ ./lsdrv
> Traceback (most recent call last):
>   File "./lsdrv", line 413, in <module>
>     probe_block('/sys/block/'+x)
>   File "./lsdrv", line 389, in probe_block
>     blk.FS = "MD %s (%s/%s)%s %s" % (blk.array.md.LEVEL, blk.slave.slot,
> blk.array.md.raid_disks, peers, blk.slave.state)
> AttributeError: 'NoneType' object has no attribute 'LEVEL'

Ok.  I'll spin up an Ubuntu 16.04 VM to play with this.  Thanks.

>> Also, do you have some large files (media files, perhaps) that you know
>> are in your array but you have a copy in hand?  If so, you could use the
>> findHash script in my github account to map how that file is laid out on
>> your array's devices.  Since large media files tend to be contiguous,
>> such a map would definitively show your chunk size and device order.

> I'll take a look. I definitely have some large continuous files on this
> array.

The first draft of this script was written for a fellow in a situation
very similar to yours.  The results were miraculous.  Not to get your
hopes up too high, though -- my first impression of this thread is that
you're screwed. /-:

Phil