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Forum Discussion
stardork
Jan 16, 2024Aspirant
ReadyNAS 104 - can't reassemble volume
My girlfriend's ReadyNAS had a disk go bad so it was showing as a degraded volume. She pulled the wrong disk out (disk 4 was bad but she accidentally pulled 3). Immediately put the disk back in when ...
- Jan 16, 2024
You need to use the --force (or perhaps --really-force) option to assemble the array.
The instructions (starting from when you log into tech support mode) are
# rnutil chroot # mdadm --assemble --really-force /dev/md127 /dev/sd[abcd]3 # btrfs device scan # btrfs fi show # mount /dev/md127 /data # ls /data
There could be some data loss - the fact that the array isn't assembling suggests there were cached writes that never made it to the drive she pulled.
StephenB
Jan 16, 2024Guru - Experienced User
You need to use the --force (or perhaps --really-force) option to assemble the array.
The instructions (starting from when you log into tech support mode) are
# rnutil chroot
# mdadm --assemble --really-force /dev/md127 /dev/sd[abcd]3
# btrfs device scan
# btrfs fi show
# mount /dev/md127 /data
# ls /data
There could be some data loss - the fact that the array isn't assembling suggests there were cached writes that never made it to the drive she pulled.
- stardorkJan 16, 2024Aspirant
Looks like it worked, thanks so much!
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