Truenas - ZFS Over iSCSI - cannot delete Lun

[alfinium]

Hello everyone,

I tried to configure my proxmox 7.2-11 Servers with my Truenas server (13.0 U2), using the plugin developed by TheGrandWazoo: https://github.com/TheGrandWazoo/freenas-proxmox (Thanks to him)

I made mistakes during the setup, but finally I was able to migrate disk on it, and VMs work perfectly.

But, I noticed something strange. If I move disks to another storage, the delete doesn't work, with the error dataset is busy:



So I tried to move disk without delete the source (works perfectly), and when the move is finished



I try to remove the Unused Disk, and once again:



But, If I wait for 5 or 10 minutes....and I retry the delete.... it works:



I tested with several Truenas versions:

Truenas Core 12.0-U8.1 --> Problem at remove, but after some minutes it works
Truenas Core 13.0-U2 --> Problem at remove, but after some minutes it works
Truenas Scale 22.02.4 --> Works perfectly without errors

I could stay with Truenas Scale, but to be honest I have much better performance with Truenas Core


I took time, looking on the forum, the Truenas Forum, and the Github project, before creating this post

I found some references (https://github.com/TheGrandWazoo/freenas-proxmox/issues/51), but it seems to be fixed

So if someone has the solution, he'll have all my gratitude

 

[bbgeek17]

Based on the description, I suspect there is some sort of processing/activity happening inside the Truenas (independent of PVE) that is keeping the dataset busy.
Ideally you should try to reproduce the behavior without PVE or Plugin. Executing the same commands (provision,attach,detach,delete) and report it to Truenas support for advice.
Alternatively you can try to reach out to the author of the plugin by reporting an issue on github.

If the storage is truly taking 5min to release the dataset - there is no timeout variable that can be set to that high of the value in PVE to allow for seamless processing.

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