Allegedly, on or about 24 July 2016, Bob Goodwin sent:
> /dev/sdd1 on /mnt/temp type ext4 (rw,relatime,seclabel,data=ordered)
> /dev/sde1 on /mnt/temp type ext4 (rw,relatime,seclabel,data=ordered) 

You've mounted two things onto the same mount point.  Do-able, but the
second thing takes over, and the first one becomes hidden.  You should
really unmount something before mounting something else over the top of
it.

If you've been unplugging and replugging USB drives rather quickly, even
if it was unmounted, the system doesn't let go of the previous device
name (e.g. /dev/sdd1) immediately, and when replugged it may be given
the next available device name (e.g. /dev/sde1).

If you unplug, wait some time, then replug, chances are that the
previous device will be noticed as free, and the second time its loaded
up, will be given the same device name as before.

Ordinarily, it probably doesn't matter that something has changed device
names, as we're supposed to be using labels and unique IDs to refer to
drives.  But it can be confusing when trying to sort out hardware, and a
potential risk if your next task was to do something with a device based
on the device name.  You end up operating on the wrong thing.

-- 
[tim@localhost ~]$ uname -rsvp
Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64

Boilerplate:  All mail to my mailbox is automatically deleted, there is
no point trying to privately email me, I only get to see the messages
posted to the mailing list.

ZNQR LBH YBBX!


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