Monitoring ZFS IO

[Matt Burke]

On 12/02/11 14:47, Ronald Klop wrote:
> while true; do gstat -b -I 1s; done

Looks like I wasn't clear about what I'm after - sorry.

I want to see how many bytes or KB have been read and written to a given
zpool since creation (as in the newer of uptime or zpool creation) on the
system.

For instance I want this data:

# time iostat -Idx
                        extended device statistics
device     r/i   w/i    kr/i    kw/i wait svc_t  %b
mfid0    284807.0 5469251.0 4452202.0 116634996.0    0   0.8   0
mfid1    284576.0 5466322.0 4474976.5 116510280.0    0   0.8   0
mfid2    278686.0 5450269.0 4418703.0 116511709.0    0   0.8   0
mfid3    281673.0 5452757.0 4439770.5 116560910.5    0   0.8   0
mfid4    279549.0 5472177.0 4440227.0 116609067.0    0   0.8   0
mfid5    282625.0 5464261.0 4503257.5 116608801.5    0   0.8   0
mfid6    275635.0 5470654.0 4433529.0 116616131.5    0   0.8   0
...
mfid27   302950.0 5464880.0 4434398.0 116542100.0    0   0.7   0
mfid28   281464.0 5459410.0 4461678.5 116595780.5    0   0.8   0
mfid29   277535.0 5468784.0 4443352.5 116642932.0    0   0.8   0
...
real	0m0.003s
user	0m0.000s
sys	0m0.007s


For the zpool as a singular entitiy (or even by zfs filesystem), but not
for the individual disks.

Hope this clarifies my request a bit


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