Can i convert my linear span to a raidz-5? I finally have enough hard drives, and dont really want to thrash them about refilling with the backup data that they need to be holding.
so currently, the command i built is not raid, but uses linear span
$ zpool status
pool: san
state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
the pool may no longer be accessible by software that does not support
the features. See zpool-features(5) for details.
scan: scrub repaired 0 in 7h28m with 0 errors on Sat Apr 2 02:58:32 2016
config:
NAME STATE READ WRITE CKSUM
san ONLINE 0 0 0
sdd ONLINE 0 0 0
sdc ONLINE 0 0 0
sde ONLINE 0 0 0
errors: No known data errors
can i add another 2tb, convert all theses into the raidz5 straight across, so my checksum and crc will all become worthwhile, without erasing my data?
$ zfs list
NAME USED AVAIL REFER MOUNTPOINT
san 4.91T 371G 2.85M /san
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T 0 disk
`-sda1 8:1 0 1.8T 0 part
sdb 8:16 0 232.9G 0 disk
|-sdb1 8:17 0 1007K 0 part
|-sdb2 8:18 0 4G 0 part [SWAP]
|-sdb3 8:19 0 20G 0 part /
|-sdb4 8:20 0 208.9G 0 part /home
`-sdb5 8:21 0 3.1M 0 part
sdc 8:32 0 1.8T 0 disk
|-sdc1 8:33 0 1.8T 0 part
`-sdc9 8:41 0 8M 0 part
sdd 8:48 0 1.8T 0 disk
|-sdd1 8:49 0 1.8T 0 part
`-sdd9 8:57 0 8M 0 part
sde 8:64 0 1.8T 0 disk
|-sde1 8:65 0 1.8T 0 part
`-sde9 8:73 0 8M 0 part
sda is the new guy.
No, you can't do anything with what you have other than adding drives to mirror the existing set (you'd need three) or rebuild with the ZFS protection level that makes the most sense for you.