resilvering bug?

[sirdir]

Hi

Can this be a bug? For the second time in a row replacing a drive does not only resilver the new drive, but also the old one. it starts out as it should:

Code:

  pool: Data
 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 Sat Nov 10 11:28:11 2012
        12.2M scanned out of 8.15T at 2.04M/s, (scan is slow, no estimated time)
        2.32M resilvered, 0.00% done
config:

	NAME                                              STATE     READ WRITE CKSUM
	Data                                              ONLINE       0     0     0
	  raidz1-0                                        ONLINE       0     0     0
	    gptid/ad4e9406-29a4-11e2-aeb7-6805ca08d303    ONLINE       0     0     0
	    gptid/3718ab4e-1854-11e2-8508-6805ca08d303    ONLINE       0     0     0
	    replacing-2                                   ONLINE       0     0     0
	      gptid/e15222e6-d37c-11e1-bd2b-6805ca0202b1  ONLINE       0     0     0
	      gptid/53379b46-2b21-11e2-9d48-6805ca08d303  ONLINE       0     0     0  (resilvering)
	    gptid/cdd7c94e-22cf-11e2-a821-6805ca08d303    ONLINE       0     0     0

errors: No known data errors

but after a few minutes it looked like this:

Code:

  pool: Data
 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 Sat Nov 10 11:28:11 2012
        92.6G scanned out of 8.15T at 43.6M/s, 53h47m to go
        23.1G resilvered, 1.11% done
config:

	NAME                                              STATE     READ WRITE CKSUM
	Data                                              ONLINE       0     0     0
	  raidz1-0                                        ONLINE       0     0     0
	    gptid/ad4e9406-29a4-11e2-aeb7-6805ca08d303    ONLINE       0     0     0
	    gptid/3718ab4e-1854-11e2-8508-6805ca08d303    ONLINE       0     0     0
	    replacing-2                                   ONLINE       0     0     0
	      gptid/e15222e6-d37c-11e1-bd2b-6805ca0202b1  ONLINE       0     0     0  (resilvering)
	      gptid/53379b46-2b21-11e2-9d48-6805ca08d303  ONLINE       0     0     0  (resilvering)
	    gptid/cdd7c94e-22cf-11e2-a821-6805ca08d303    ONLINE       0     0     0

errors: No known data errors

Shouldn't be that way, should it?
And am I correct if I see no longer any benefit in reselvering the drive I want to replace? I could as well detach it right away, couldn't I?

Regards Patrick

 

[William Grzybowski]

Your zpool output is completely broken, as not formatted.

Please paste again within code blocks so it can be indented.

 

[sirdir]

OK, but the output wasn't that complicated, I guess.
Anyway, the resilvering has completed by now (I detached the old disk after some hours...)
But I still think there's something wrong when both disks get resilvered.

 

[grahamperrin]

offline, replacement, resilver

Whilst the replacement was resilvering, I might have taken offline the disk to be replaced.