Hello List,
I'm new to the list, so please redirect me to the right place if I'm not
at the right place.
I'd like to propose a patch to zpool iostat where it outputs the raw (or
literal) counters instead of the human-readable output, for machine
parsing.
Whilst searching for this, I stumbled on a thread [1] on the freebsd
mailinglist, probably for exactly the same reasons; people like to see
how their zpool is doing over time.
I haven't thought long and hard, but with some experimenting I came to
roughly this output:
./zpool iostat -p
capacity operations bandwidth
pool alloc free read write read write
---------- ----- ----- ----- ----- ----- -----
zroot 1819706376192 6083033448448 14760391 13281024
1320019169280 85995089920
Or with -v:
$ ./zpool iostat -pv
capacity operations bandwidth
pool alloc free read write read write
------------ ----- ----- ----- ----- ----- -----
zroot 1819704811520 6083035013120 14760391 13284264
1320019169280 86016716800
raidz1 1819704811520 6083035013120 14760391 13284264
1320019169280 86016716800
gpt/zfs0 - - 9469851 2815461 459846656000 39679000576
gpt/zfs1 - - 9434586 2670780 443475955712 38377684992
gpt/zfs2 - - 6295038 2657443 460142014464 39691751424
gpt/zfs3 - - 8795875 2729781 443798388736 38365073408
------------ ----- ----- ----- ----- ----- -----
Would such a change benefit the project? Possibly combined with a -H to
replace spaces with tabs and skip some headers for "scripted" output?
Regards,
Kai
[1]
https://lists.freebsd.org/pipermail/freebsd-fs/2011-December/013149.html
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