I have a pool of four raidz1 on Solaris 10, three of which look like this:
state: ONLINE status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state. action: Wait for the resilver to complete. scan: resilver in progress since Wed Jun 17 16:46:31 2015 536G scanned out of 43.9T at 389M/s, 32h26m to go 536G scanned out of 43.9T at 389M/s, 32h26m to go 27.3G resilvered, 1.19% done config: NAME STATE READ WRITE CKSUM volume ONLINE 0 0 0 raidz1-0 ONLINE 0 0 0 c0t600C0FF00012FBB109A2154F01000000d0 ONLINE 0 0 0 c0t600C0FF00012FBB115A2154F01000000d0 ONLINE 0 0 0 c0t600C0FF00012FBB139A2154F01000000d0 ONLINE 0 0 0 c0t600C0FF00012FC7DFCA1154F01000000d0 ONLINE 0 0 0 c0t600C0FF00012FBB151A2154F01000000d0 ONLINE 0 0 0 c0t600C0FF00012FBB1E630025201000000d0 ONLINE 0 0 0 (resilvering) c0t600C0FF00012FBB169A2154F01000000d0 ONLINE 0 0 0 ... spares c0t600C0FF00012FBB11555EC5401000000d0 AVAIL
What does it mean if I see that resilvering kicked in although no disk is marked OFFLINE or UNAVAIL? Is it safe to remove one of the disks from the array? Should I replace the resilvering device by a spare?