Hi all, TrueNAS already shows current pool usage, but without any history it’s impossible to answer questions like “how fast is this pool filling?” or to plan hardware upgrades. A rolling utilisation graph (daily/weekly/monthly) would solve that.
I tried to bridge the gap by installing the Netdata community app, because recent Netdata releases include a zfspool collector that stores historic space stats per pool and vdev. Unfortunately the container launches without CAP_SYS_ADMIN, so every call to /dev/zfs fails and no data is collected. Running a custom container introduced its own set of hurdles that I wasn’t able to resolve.
Feature request
Ship a built-in way to record and visualise historic ZFS-pool utilisation - either by
exposing Netdata’s zfspool charts with the required capability, or
adding an equivalent chart series directly in the Reporting UI.
Include basic projections (linear fit) so admins can see estimated days until full.
This would let us:
track real growth over weeks or months
spot sudden spikes that current point-in-time screens can’t show
plan disk replacements and expansions before running out of space.
Curious to hear how others handle capacity trending today, and whether the developers see a clean path to integrate this into SCALE without manual tweaks.
I did try to replicate all of the app settings for netdata into a custom app, however when trying to deploy I got an error which directed me to this line in the app_lifecycle.log:
Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: unable to apply apparmor profile: apparmor failed to apply profile: open /proc/self/attr/apparmor/exec: read-only file system: unknown
I can only assume this has something to do with this recommended config section from the documentation which I was unable to configure in the custom app UI:
security_opt:
- apparmor:unconfined
I’m guessing this could be done with a YAML-based deployment but was trying to stick to something simple.
I’ve downloaded and deployed TrueCommand using a simple custom app. The interface is relatively straightforward, though somewhat basic. I believe I’ve found a pane that might provide the information I’m looking for:
Once again, the interface is quite basic, and I’d much prefer if that report were available as a real-time pane. I’ll explore it a bit further to see if it can meet my needs. If not, I may revert to deploying Netdata as a YAML-based container and give that another try.
