If I have 2 raidz's, 5x400G and a later added 5x1T, should I expect
that streaming writes would go primarily to only 1 of the raidz sets?
Or is this some side effect of my non-ideal hardware setup? I thought
that adding additional capacity to a pool automatically would then
balance writes to both raidz's, but does not seem to fit what I've
seen empirically. What am I missing? Note that the following is a
snapshot of time in the middle of a large streaming write, not the
initial output from zpool iostat.
Thomas
zpool iostat -v tank 1
capacity operations bandwidth
pool used avail read write read write
---------- ----- ----- ----- ----- ----- -----
tank 1.72T 4.65T 9 379 156K 30.7M
raidz1 1.66T 166G 9 329 156K 30.5M
c0t0d0 - - 4 152 282K 7.64M
c0t4d0 - - 4 155 282K 7.64M
c1t0d0 - - 2 153 188K 7.64M
c1t4d0 - - 3 161 220K 7.64M
c1t1d0 - - 1 158 94.1K 7.64M
raidz1 65.2G 4.48T 0 50 0 158K
c0t5d0 - - 0 72 0 82.4K
c1t2d0 - - 0 69 0 80.4K
c1t6d0 - - 0 72 0 83.3K
c0t2d0 - - 0 0 0 0
c0t6d0 - - 0 73 0 87.3K
---------- ----- ----- ----- ----- ----- -----
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