Here is example of the pool config we use:
# zpool status
pool: pool002
state: ONLINE
scrub: scrub stopped after 0h1m with 0 errors on Fri Oct 23 23:07:52 2009
config:
NAME STATE READ WRITE CKSUM
pool002 ONLINE 0 0 0
raidz2 ONLINE 0 0 0
c9t18d0 ONLINE 0 0 0
c9t17d0 ONLINE 0 0 0
c9t55d0 ONLINE 0 0 0
c9t13d0 ONLINE 0 0 0
c9t15d0 ONLINE 0 0 0
c9t16d0 ONLINE 0 0 0
c9t11d0 ONLINE 0 0 0
c9t12d0 ONLINE 0 0 0
c9t14d0 ONLINE 0 0 0
c9t9d0 ONLINE 0 0 0
c9t8d0 ONLINE 0 0 0
c9t10d0 ONLINE 0 0 0
c9t29d0 ONLINE 0 0 0
c9t28d0 ONLINE 0 0 0
c9t27d0 ONLINE 0 0 0
c9t23d0 ONLINE 0 0 0
c9t25d0 ONLINE 0 0 0
c9t26d0 ONLINE 0 0 0
c9t21d0 ONLINE 0 0 0
c9t22d0 ONLINE 0 0 0
c9t24d0 ONLINE 0 0 0
c9t19d0 ONLINE 0 0 0
raidz2 ONLINE 0 0 0
c9t30d0 ONLINE 0 0 0
c9t31d0 ONLINE 0 0 0
c9t32d0 ONLINE 0 0 0
c9t33d0 ONLINE 0 0 0
c9t34d0 ONLINE 0 0 0
c9t35d0 ONLINE 0 0 0
c9t36d0 ONLINE 0 0 0
c9t37d0 ONLINE 0 0 0
c9t38d0 ONLINE 0 0 0
c9t39d0 ONLINE 0 0 0
c9t40d0 ONLINE 0 0 0
c9t41d0 ONLINE 0 0 0
c9t42d0 ONLINE 0 0 0
c9t44d0 ONLINE 0 0 0
c9t45d0 ONLINE 0 0 0
c9t46d0 ONLINE 0 0 0
c9t47d0 ONLINE 0 0 0
c9t48d0 ONLINE 0 0 0
c9t49d0 ONLINE 0 0 0
c9t50d0 ONLINE 0 0 0
c9t51d0 ONLINE 0 0 0
c9t52d0 ONLINE 0 0 0
cache
c8t2d0 ONLINE 0 0 0
c8t3d0 ONLINE 0 0 0
spares
c9t20d0 AVAIL
c9t43d0 AVAIL
errors: No known data errors
pool: rpool
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
mirror ONLINE 0 0 0
c8t0d0s0 ONLINE 0 0 0
c8t1d0s0 ONLINE 0 0 0
errors: No known data errors
...and here is a snapshot of the system using "iostat -indexC 5" during a scrub
of "pool002" (c8 is onboard AHCI controller, c9 is LSI SAS 3801E):
extended device statistics ---- errors ---
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot
device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0 c8
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c8t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c8t1d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c8t2d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c8t3d0
8738.7 0.0 555346.1 0.0 0.1 345.0 0.0 39.5 0 3875 0 1 1
2 c9
194.8 0.0 11936.9 0.0 0.0 7.9 0.0 40.3 0 87 0 0 0 0
c9t8d0
194.6 0.0 12927.9 0.0 0.0 7.6 0.0 38.9 0 86 0 0 0 0
c9t9d0
194.6 0.0 12622.6 0.0 0.0 8.1 0.0 41.7 0 90 0 0 0 0
c9t10d0
201.6 0.0 13350.9 0.0 0.0 8.0 0.0 39.5 0 90 0 0 0 0
c9t11d0
194.4 0.0 12902.3 0.0 0.0 7.8 0.0 40.1 0 88 0 0 0 0
c9t12d0
194.6 0.0 12902.3 0.0 0.0 7.7 0.0 39.3 0 88 0 0 0 0
c9t13d0
195.4 0.0 12479.0 0.0 0.0 8.5 0.0 43.4 0 92 0 0 0 0
c9t14d0
197.6 0.0 13107.4 0.0 0.0 8.1 0.0 41.0 0 92 0 0 0 0
c9t15d0
198.8 0.0 12918.1 0.0 0.0 8.2 0.0 41.4 0 92 0 0 0 0
c9t16d0
201.0 0.0 13350.3 0.0 0.0 8.1 0.0 40.4 0 91 0 0 0 0
c9t17d0
201.2 0.0 13325.0 0.0 0.0 7.8 0.0 38.5 0 88 0 0 0 0
c9t18d0
200.6 0.0 13021.5 0.0 0.0 8.2 0.0 40.7 0 91 0 0 0 0
c9t19d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c9t20d0
196.6 0.0 12991.9 0.0 0.0 7.6 0.0 38.8 0 85 0 0 0 0
c9t21d0
196.4 0.0 11499.3 0.0 0.0 8.0 0.0 40.5 0 89 0 0 0 0
c9t22d0
197.6 0.0 13030.3 0.0 0.0 8.0 0.0 40.3 0 90 0 0 0 0
c9t23d0
198.4 0.0 11535.8 0.0 0.0 7.8 0.0 39.3 0 87 0 0 0 0
c9t24d0
202.2 0.0 13096.3 0.0 0.0 7.9 0.0 39.3 0 89 0 0 0 0
c9t25d0
193.6 0.0 12457.4 0.0 0.0 8.3 0.0 42.8 0 90 0 0 0 0
c9t26d0
194.0 0.0 12799.9 0.0 0.0 8.2 0.0 42.1 0 91 0 0 0 0
c9t27d0
193.0 0.0 12748.8 0.0 0.0 7.9 0.0 41.0 0 88 0 0 0 0
c9t28d0
194.6 0.0 12863.9 0.0 0.0 7.9 0.0 40.6 0 89 0 0 0 0
c9t29d0
199.8 0.0 12849.1 0.0 0.0 7.8 0.0 39.0 0 87 0 0 0 0
c9t30d0
205.0 0.0 13631.9 0.0 0.0 7.8 0.0 38.2 0 88 0 0 0 0
c9t31d0
204.0 0.0 11674.3 0.0 0.0 7.9 0.0 38.6 0 88 0 0 0 0
c9t32d0
204.2 0.0 11339.9 0.0 0.0 8.1 0.0 39.7 0 89 0 0 0 0
c9t33d0
204.8 0.0 11569.7 0.0 0.0 7.7 0.0 37.7 0 86 0 0 0 0
c9t34d0
205.2 0.0 11268.7 0.0 0.0 7.9 0.0 38.6 0 88 0 0 0 0
c9t35d0
198.4 0.0 12814.9 0.0 0.0 7.8 0.0 39.5 0 88 0 0 0 0
c9t36d0
200.4 0.0 13222.3 0.0 0.0 7.9 0.0 39.2 0 88 0 0 0 0
c9t37d0
200.2 0.0 12324.5 0.0 0.0 7.4 0.0 37.1 0 85 0 0 0 0
c9t38d0
203.0 0.0 11928.8 0.0 0.0 7.7 0.0 37.7 0 88 0 0 0 0
c9t39d0
196.2 0.0 12966.3 0.0 0.0 7.5 0.0 38.0 0 84 0 0 0 0
c9t40d0
195.2 0.0 11544.8 0.0 0.0 7.9 0.0 40.5 0 89 0 0 0 0
c9t41d0
199.2 0.0 12601.8 0.0 0.0 7.8 0.0 38.9 0 88 0 0 0 0
c9t42d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c9t43d0
194.4 0.0 12940.7 0.0 0.0 7.6 0.0 39.2 0 86 0 0 0 0
c9t44d0
198.2 0.0 13120.6 0.0 0.0 7.5 0.0 38.1 0 86 0 0 0 0
c9t45d0
201.2 0.0 11713.6 0.0 0.0 7.8 0.0 39.0 0 89 0 0 0 0
c9t46d0
197.8 0.0 13196.7 0.0 0.0 7.4 0.0 37.4 0 85 0 0 0 0
c9t47d0
197.4 0.0 13094.3 0.0 0.0 7.6 0.0 38.6 0 87 0 0 0 0
c9t48d0
195.8 0.0 13017.5 0.0 0.0 7.5 0.0 38.4 0 85 0 1 1 2
c9t49d0
205.0 0.0 11384.4 0.0 0.0 8.0 0.0 39.0 0 89 0 0 0 0
c9t50d0
200.6 0.0 13286.6 0.0 0.0 7.5 0.0 37.2 0 85 0 0 0 0
c9t51d0
200.6 0.0 12931.6 0.0 0.0 7.9 0.0 39.5 0 89 0 0 0 0
c9t52d0
196.6 0.0 13055.9 0.0 0.0 7.5 0.0 38.3 0 87 0 0 0 0
c9t55d0
I had to abort the scrub shortly after this or we would start seeing the
timeouts.
--
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