Omnios ZFS/COMSTAR issue with Proxmox

[defsck]

Hello all!
I have experienced an issue with iscsi target/comstar on OmniOS with Proxmox as initiator (ZFS over ISCSI, zvols).
Seems like STMF service looks crashed after heavy IO load. iSCSI tcp port closes also, target goes to offline. Reboot helps.
When I trying to restart stmf manually without reboot, it switches into maintenance mode.

Possible steps to reproduce:
Add iscsi passthru disk to vm, check 'discard' box, send full trim inside VM.

Please, advice.

 

[Alwin]

Seems that 'zfs trim' has been disabled. That might be the reason why it crashes.
https://www.illumos.org/issues/11714

 

[mir]

If OP uses one of the supported LTS versions TRIM is not disabled so if that is the case then it must be another problem.