[PVE-User] ZFS over iSCSI in Proxmox 5.0 issues

Wolfgang Link w.link at proxmox.com
Wed Jul 19 07:17:42 CEST 2017


Proxmox VE is not a storage box, so we do not provide this kind of setups.

ZFS over iSCSI is used if you have a external storage box like FreeNas.

Debian Stretch use lio as iscsi target what should also work with IET.

On 07/19/2017 01:10 AM, Mikhail wrote:
> Hello,
> I'm trying to setup Proxmox 5.0 node as shared storage node (basically I
> have a 4x10TB disks inside that server, Proxmox installed on ZFS RAID 10
> filesystem). I'm willing to use this node as a host for KVM vms, and
> also as a storage source for my other nodes.
> The issue is that I cannot seem to setup this node as a ZFS-over-iSCSI
> source for the other nodes. It looks like Debian Stretch (base system
> for Proxmox 5.0) has dropped support for "iscsitarget" package that was
> available in Debian Jessie - iscsitarget package provides tools for IET
> (ietadm, ietd). So the problem comes when I'm trying to setup new
> ZFS-over-iSCSI storage from the Datacenter GUI: there I have to choose
> iSCSI Provider module - Comstar, istgt, IET.
> I cannot choose Comstar because it is purely for Solaris type of OS.
> I cannot choose IET because my Proxmox 5.0 host has no IET (iscsitarget)
> package available.
> And as a last resort, I have tried "istgt" as a provider (before that, I
> installed "istgt" package inside my Proxmox 5.0 storage node).
> Before doing this, I followed Proxmox wiki page and set up ssh keys for
> authorization on Proxmox 5.0 storage server. This is all working good.
> However, if I choose istgt as a provider, I get the following error
> whenever I try to create/run new vm that's storage source is set to
> ZFS-over-iSCSI volume:
> TASK ERROR: create failed - No configuration found. Install istgt on
> at /usr/share/perl5/PVE/Storage/LunCmd/Istgt.pm line 99.
> istgt is actually installed on
> The question is how to use ZFS-over-iSCSI in this scenario?
> Thanks!
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