PSA–an article I wrote for Klara Systems published this week:
Want to get a more detailed look at how your OpenZFS storage is performing? Learn how to use the tools iostat, zpool iostat, iostat, and ztop in this article I wrote for Klara Systems!
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Great article Jim. Definitely learned some new things.
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FWIW I managed to export zpool iostat histograms to prometheus, and I found it quite useful. I haven’t found it in libzfs though, so I just parsed command line output, which seems going against prometheus guidelines, but works so far.
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I’d love to see some screenshots of it in action!
On FreeBSD I’ve been tinkering with gstat derivative reimplemented in rust called gstat-rs.
Added more color, altered the column spacing, changed the headers to something more legible (to me), and I’ve assigned gpt/partition labels to my pool members so I know which drive is which:
I can’t even spell “rust” so messing around with this was a handful.
Also threw some color into arcstat.py.
I need to re-apply these mods to the current version in OpenZFS master as this is missing the zfetch stuff:
Tried cmdwatch with zpool iostat and couldn’t <ctrl-c> out of it! Probably should try again with PuTTY…
