Hi all,
I'm having some trouble with adding cache drives to a zpool, anyone got any
ideas?
muslimwookie@Pyzee:~$ sudo zpool add aggr0 cache c25t10d1p2
Password:
cannot open '/dev/dsk/c25t10d1p2': I/O error
muslimwookie@Pyzee:~$
I have two SSDs in the system, I've created an 8gb partition on each drive for
use as a mirrored write cache. I also have the remainder of the drive
partitioned for use as the read only cache. However, when attempting to add it
I get the error above.
Here's a zpool status:
pool: aggr0
state: DEGRADED
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 Thu Feb 21 21:13:45 2013
1.13T scanned out of 20.0T at 106M/s, 51h52m to go
74.2G resilvered, 5.65% done
config:
NAME STATE READ WRITE CKSUM
aggr0 DEGRADED 0 0 0
raidz2-0 DEGRADED 0 0 0
c7t5000C50035CA68EDd0 ONLINE 0 0 0
c7t5000C5003679D3E2d0 ONLINE 0 0 0
c7t50014EE2B16BC08Bd0 ONLINE 0 0 0
c7t50014EE2B174216Dd0 ONLINE 0 0 0
c7t50014EE2B174366Bd0 ONLINE 0 0 0
c7t50014EE25C1E7646d0 ONLINE 0 0 0
c7t50014EE25C17A62Cd0 ONLINE 0 0 0
c7t50014EE25C17720Ed0 ONLINE 0 0 0
c7t50014EE206C2AFD1d0 ONLINE 0 0 0
c7t50014EE206C8E09Fd0 ONLINE 0 0 0
c7t50014EE602DFAACAd0 ONLINE 0 0 0
c7t50014EE602DFE701d0 ONLINE 0 0 0
c7t50014EE20677C1C1d0 ONLINE 0 0 0
replacing-13 UNAVAIL 0 0 0
c7t50014EE6031198C1d0 UNAVAIL 0 0 0 cannot open
c7t50014EE0AE2AB006d0 ONLINE 0 0 0 (resilvering)
c7t50014EE65835480Dd0 ONLINE 0 0 0
logs
mirror-1 ONLINE 0 0 0
c25t10d1p1 ONLINE 0 0 0
c25t9d1p1 ONLINE 0 0 0
errors: No known data errors
As you can see, I've successfully added the 8gb partitions in a write caches.
Interestingly, when I do a zpool iostat -v it shows the total as 111gb:
capacity operations bandwidth
pool alloc free read write read write
--------------------------- ----- ----- ----- ----- ----- -----
aggr0 20.0T 7.27T 1.33K 139 81.7M 4.19M
raidz2 20.0T 7.27T 1.33K 115 81.7M 2.70M
c7t5000C50035CA68EDd0 - - 566 9 6.91M 241K
c7t5000C5003679D3E2d0 - - 493 8 6.97M 242K
c7t50014EE2B16BC08Bd0 - - 544 9 7.02M 239K
c7t50014EE2B174216Dd0 - - 525 9 6.94M 241K
c7t50014EE2B174366Bd0 - - 540 9 6.95M 241K
c7t50014EE25C1E7646d0 - - 549 9 7.02M 239K
c7t50014EE25C17A62Cd0 - - 534 9 6.93M 241K
c7t50014EE25C17720Ed0 - - 542 9 6.95M 241K
c7t50014EE206C2AFD1d0 - - 549 9 7.02M 239K
c7t50014EE206C8E09Fd0 - - 526 10 6.94M 241K
c7t50014EE602DFAACAd0 - - 576 10 6.91M 241K
c7t50014EE602DFE701d0 - - 591 10 7.00M 239K
c7t50014EE20677C1C1d0 - - 530 10 6.95M 241K
replacing - - 0 922 0 7.11M
c7t50014EE6031198C1d0 - - 0 0 0 0
c7t50014EE0AE2AB006d0 - - 0 622 2 7.10M
c7t50014EE65835480Dd0 - - 595 10 6.98M 239K
logs - - - - - -
mirror 740K 111G 0 43 0 2.75M
c25t10d1p1 - - 0 43 3 2.75M
c25t9d1p1 - - 0 43 3 2.75M
--------------------------- ----- ----- ----- ----- ----- -----
rpool 7.32G 12.6G 2 4 41.9K 43.2K
c4t0d0s0 7.32G 12.6G 2 4 41.9K 43.2K
--------------------------- ----- ----- ----- ----- ----- -----
Something funky is going on here...
Wooks
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