The labels are all changed as well. I am able to access the data on the pool. I'm not sure if I need to buy a new hard drive, I thought it may just be a labeling problem. I would also prefer to not rebuild the pool.
S:~ Samuel$ zpool status
pool: MirrorPool
state: DEGRADED
status: One or more devices could not be used because the label is missing or
invalid. Sufficient replicas exist for the pool to continue
functioning in a degraded state.
action: Replace the device using 'zpool replace'.
see: http://zfsonlinux.org/msg/ZFS-8000-4J
scan: scrub canceled on Fri Sep 30 14:38:19 2016
config:
NAME STATE READ WRITE CKSUM
MirrorPool DEGRADED 0 0 0
mirror-0 DEGRADED 0 0 0
3888173273276764392 FAULTED 0 0 0 was /dev/disk2s1
media-5F2C0073-7570-C341-A3F0-0CFA0A76F8A7 ONLINE 0 0 0
errors: No known data errors
S:~ Samuel$ sudo zpool replace -f MirrorPool 3888173273276764392 /dev/disk2
invalid vdev specification
the following errors must be manually repaired:
/dev/disk2s1 is part of active pool 'MirrorPool'
S:~ Samuel$ sudo zpool replace -f MirrorPool /dev/disk2s1
invalid vdev specification
the following errors must be manually repaired:
/dev/disk2s1 is part of active pool 'MirrorPool'