Feature request: ztop, a top-like tool specific to zfs

[mailinglists35]

System information

Type	Version/Name
Distribution Name	any
Distribution Version	any
Linux Kernel	any
Architecture	any
ZFS Version	any
SPL Version	any

Describe the problem you're observing

currently I have arcstat, arc_summary, zpool status and zpool iostat (please correct me if there are more tools)
It would be awesome to combine all information (including top-like reports for zfs kernel modules and processes) into a single dashboard like atop or nmon does for the os in general. ideally tunables should be shown in a separate view like powertop does.

Describe how to reproduce the problem

Include any warning/errors/backtraces from the system logs

[bunder2015]

there is also dstat --zfs-arc --zfs-l2arc --zfs-zil

[GregorKopka]

Such a thing would be nice, especially if it could display IO load and latencies on a per-dataset level.

[RubenKelevra]

Would be nice, if we can view which VM on which ZVol is causing issuing how much I/O to ZFS in which size etc. and how many real disk reads/writes result from this, also the Arc hitrate would be interesting per ZVol as well as the CPU-Usage from ZFS per ZVol.

A backlog-count in the log-device per ZVol would also help to debug excessive loads on these devices. :)

[mailinglists35]

thanks, amazing to see this feature has been solved!