[clue] Partition mystery

[Quentin Hartman]

I have a 3TB external USB3 drive that mysteriously disconnected from the
machine it usually lives on the other day, so I started doing some checking
to see if I can figure out what's up with it.

It's got a single GPT partition on it, formatted as ext4.

Hooked it up to my workstation, it mounts, data looks good, everything
seems fine. It has reached it's mount count though, so I thought I'd run
fsck on it. fsck says it has a bad superblock.

Tried running against a ton of different potential superblock backup
locations, no dice. The only difference is that when I run against a backup
superblock it reports:

1.41.10-2198: ***** FILE SYSTEM WAS MODIFIED *****

In addition to the warning about the bad superblock. (1.41.10-2198 is the
drive label)

I did notice in gparted that the "msftdata" flag was incorrectly set on it,
so I cleared that flag thinking it might have been confusing fsck, but no
love there.

Anyone run into something like this before? My prayers to google aren't
returning anything I haven't tried.

For the record, I'm not necessarily opposed to nuking the partitions and
starting over, the drive only contains backups, but re-loading it would be
time consuming so I'd love to avoid that if I can.

QH
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