On 01/04/2022 21:23, Bruce Korb wrote:
Because if it did your data is probably toast, but if it didn't we might
be home and dry.
If I can figure out how to mount it (read only), then I can see if a
new FS was installed.
If it wasn't, then I've got my data.
That looks promising then. It looks like your original array may have
been v1.0 too ... a very good sign.
Read up on loopback devices - it's in the wiki somewhere on recovering
your raid ...
What that does is you stick a file between between the file system and
whatever's running on top, so linux caches all your writes into the file
and doesn't touch the disk.
Let's hope xfs_recover didn't actually write anything or we could be in
trouble.
The whole point about v1.0 is - hallelujah - the file system starts at
the start of the partition!
So now you've got loopback sorted, FORGET ABOUT THE RAID. Put the
loopback over sdc1, and mount it. If it needs xfs_recover, because
you've got the loopback, you can let it run, and hopefully it will not
do very much.
IFF the wind is blowing in the right direction (and there's at least a
decent chance), you've got your data back!
If it all goes pear shaped, it may well still be recoverable, but I'll
probably be out of ideas. But the loopback will have saved your data so
you'll be able to try again.
Oh - and if it looks sort-of-okay but xfs_recover has trashed sdc1, at
least try the same thing with sde1. You stand a chance that xfs_recover
only trashed one drive and, the other being an exact copy, it could have
survived and be okay.
Cheers,
Wol
