Re: Orphan disks

Gmox · ‎2024-11-14

Hello all,

I'm performing some test in my lab storage.

I wanted to create "orphan" disks and try to found a way to recover the fail aggregate.

I have been able to got orphaned disk but don't found how to recover.

If someone has a lead or any clue, it will be much appreciate.

Aggregate aggr_test_orphan (failed, raid_dp, partial) (block checksums)
Plex /aggr_test_orphan/plex0 (offline, failed, inactive)
RAID group /aggr_test_orphan/plex0/rg0 (partial, block checksums)

RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks)
--------- ------ ------------- ---- ---- ---- ----- -------------- --------------
dparity FAILED N/A 560000/ -
parity 4a.125L57 4a 11 4 FC:B 0 SAS 15000 560000/1146880000 560879/1148681096
data FAILED N/A 560000/ -
data 4a.125L60 4a 11 7 FC:B 0 SAS 15000 560000/1146880000 560879/1148681096
data FAILED N/A 560000/ -
data 4a.125L63 4a 11 10 FC:B 0 SAS 15000 560000/1146880000 560879/1148681096
data 4a.125L64 4a 11 11 FC:B 0 SAS 15000 560000/1146880000 560879/1148681096
data 4a.125L53 4a 11 0 FC:B 0 SAS 15000 560000/1146880000 560879/1148681096
Raid group is missing 3 disks.

Unassimilated aggr_test_orphan disks

RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks)
--------- ------ ------------- ---- ---- ---- ----- -------------- --------------
orphaned 4a.125L62 4a 11 9 FC:B 0 SAS 15000 560000/1146880000 560879/1148681096

NetApp Release 8.2.5P5 7-Mode

Thank you

AlexDawson · ‎2024-11-24

One three disks have failed, the data is gone. The only way to recover the aggregate is to bring the last failed disk back online. For 7 mode, you need to remove it from the failed-disk-register and try to reread the aggregate. raid_config info showfdr is probably the starting point for 7 mode in a lab context, but if you actually care about the data, please contact an enterprise data recovery company like Kroll ONTRACK or Drivesavers.

Gmox

Hello Alex, sorry for my late reply.

It was a test so no important data.

It was on purpose to have orphan disk and try to recover the aggregate with this "out of synchro" disk.

Thank you anyway.