SOLVED Datasets Listed on Storage Screen Not Found in Filesystem

[Anthony Chastain]

Here's a screenshot of what I see on the storage screen:

And here's what I see in shell:

There are 3 datasets completely missing. They show up with zfs commands and there's even snapshots for them, but they're completely missing from the filesystem.

I just did a zfs send | recv to move the Media2019 dataset into the Archive dataset. It's something I've done every year successfully. This time, this weirdness is happening.

The Archive dataset was set to readonly when I did the transfer. I switched readonly to off with no luck. Perhaps I should have switched it off first?


My system:
7 x 10TB HDD ZFS3
TrueNAS-12.0-U2.1
160 GiB ECC Memory
20GBPS LAGG Network Interface
My pool is at 54% used. I could drop that to 45% by removing the original dataset I'm copying from, which I obviously shouldn't do yet.

 

[sretalla]

There are 3 datasets completely missing. They show up with zfs commands and there's even snapshots for them, but they're completely missing from the filesystem.

Where is the mountpoint?

zfs get mountpoint pool/dataset

And is it actually mounted there?

zfs mount -l

 

[Anthony Chastain]

Thank you for your help!

zfs get mounpoint shows the correct location.

However zfs mount -l doesn't show the mountpoint at all.


I ran zfs mount pool/dataset for each one and they came back up.

This process is abstracted well enough, I never knew it was happening behind the scenes. Apparently if you (or TrueNAS) is trying to zfs mount a dataset inside a dataset that is read-only, it will fail. That's good to know.