IOwait per ZFS disk pool

[mailinglists]

Hi guys,

i have a few different ZFS disk pools in the same server. Some are NVMe, some SSD, some HDD.

I see the IOWAIT value in PVE graphs, as well as with top command.
However I have no idea how to get it for certain ZFS pool, do you?


The issue being, that I do not care for high IOWAIT on HDD ZFS pools, but I would like to be notified when IOWAIT increases for my NVMe or SSD pools.

 

[wolfgang]

Hi,

IOWAIT can also be high if a reader is slow.
e.g. copy a file from a slow disk to a fast disk. The reader on the slow disk will increase the IOWAIT, but there is no problems with this system and all work normal as exspected.