zpool status
within code tags?root@freenas[~]# zpool status pool: Mirror state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM Mirror ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 gptid/da46f580-9bdc-11e9-8108-080027e67489.eli ONLINE 0 0 0 gptid/daebc7e0-9bdc-11e9-8108-080027e67489.eli ONLINE 0 0 0 errors: No known data errors pool: freenas-boot state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM freenas-boot ONLINE 0 0 0 ada0p2 ONLINE 0 0 0 errors: No known data errors pool: with-spare state: DEGRADED status: One or more devices has been taken offline by the administrator. Sufficient replicas exist for the pool to continue functioning in a degraded state. action: Online the device using 'zpool online' or replace the device with 'zpool replace'. scan: resilvered 12K in 0 days 00:00:02 with 0 errors on Tue Jul 2 20:28:54 2 019 config: NAME STATE READ WRITE C KSUM with-spare DEGRADED 0 0 0 raidz1-0 DEGRADED 0 0 0 gptid/f7a1f717-9ce4-11e9-8b29-080027e67489 ONLINE 0 0 0 spare-1 DEGRADED 0 0 0 16969101116788476841 OFFLINE 0 0 0 was /dev/gptid/657253f2-9cf3-11e9-9b2c-080027e67489 gptid/6afe81b1-9cf9-11e9-88e2-080027e67489 ONLINE 0 0 0 gptid/39eb1b4f-9cb2-11e9-8c76-080027e67489 ONLINE 0 0 0 spares 4372633962829575327 INUSE was /dev/gpt id/6afe81b1-9cf9-11e9-88e2-080027e67489 errors: No known data errors
9.2.5 Adding Spare Devices ZFS provides the ability to have “hot” spares. These are drives that are connected to a pool, but not in use. If the pool experiences the failure of a data drive, the system uses the hot spare as a temporary replacement. If the failed drive is replaced with a new drive, the hot spare drive is no longer needed and reverts to being a hot spare. If the failed drive is instead removed from the pool, the spare is promoted to a full member of the pool
If the failed drive is instead removed from the pool, the spare is promoted to a full member of the pool
I assumed 'off-lining' then removing the drive the spare would would become a full member of the pool rather than a temporary stand in.Looks like the Guide could be improved. Please take a moment to create an improvement request at bugs.ixsystems.com and post the issue number here.