ZFS disk IO debug?

D

Daemonix

Hi,

I see on grafana a constant write on disk that is not something I can connect to a logging function etc...
What is the best way to debug disk IO on freebsd? Something per process maybe? (iotop similar maybe? or some smarter way?)

Running 12.2 and all mounts are on ZFS apart from the /var/run on UFS.

Thanks
 
Try top. Key "m" switches to displaying IO. To display the processes that do IO, I use the "-o" flag from the command line, since I can never remember which key switches that.

Note that this will only help if the write comes from userspace, where top can catch it.
 
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