Space usage for pool

[Dohuginn]

I got a message in my Alerts:

Space usage for pool "apps" is 70%. Optimal pool performance requires used space remain below 80%.​

In the Dataset section we see

When using du, we have

admin@truenas[/mnt/apps]$ sudo du -h --max-depth=1
29M ./tvheadend
197M ./navidrome
44G ./ix-applications
1.5K ./filebrowser
30M ./nextcloud
9.0M ./qbittorrent
45G .

Here we see only 45G. What to believe and how to clear the "apps" pool?

 

[chuck32]

Here we see only 45G. What to believe

It seems like du -h will only see / list unlocked datasets. If you have encrypted and locked datasets they will not show up here.

I'd believe what you see in the dataset section. If you select the ix-applications folder, check on the right:

If you have snapshots setup, it may be that the total allocation exceeds what is actually currently written.

how to clear the "apps" pool?

Uninstall apps / delete data ;)

What else is on the pool apps besides the ix folder? Like mentioned above check if snapshots are using up space and basically clear space by removing all unwanted data. Remember, if you retain older snapshots the space will not be freed until you deleted the corresponding snapshots.

 

[Dohuginn]

There are folders, but they take up tens of megabytes. snapshots are not configured, but I have a question. In the figure below, it is circled in red.

What is it?

 

[chuck32]

What is it?

Click on it and you'll see the snapshots for this dataset (and possible can deduct from the name where they come from). And it also shows you, if you click on the snapshot what size is referenced.

 

[Dohuginn]

Are there any contraindications to removal? After clicking on the Manage Snapshot

 

[chuck32]

Are there any contraindications to removal? After clicking on the Manage Snapshot

These are automatically created snapshots by the system.

Here is a good post explaining snapshots with a link to a nice picture. In general removing snapshots will not harm your file system. If you do not need the snapshots, delete them.