Proxmox: adding Synology iSCSI host freeze, then has duplicate serial number.

[ty628659]

Hi Community!

Proxmox VE: add a LVM storage on top of iSCSI

Error: create storage failed: device ‘dev/disk/by-id/scsi.....’ is already used by volume group ‘[unknown]’ (500)

it happen Add iSCSI... it has time out error (see picture 1), then I reboot the host server. it shows add iSCSI completed!!

Then, When I try to Add LVM for the new "Synology-ProxmoxLUN", is has duplicate serial number (see pictures 2,3)

does anyone can help me, it must be one config file has hard drive information.

Thanks!!!
Thomas

 

[bbgeek17]

You appear to have, possibly, accidentally setup a multipath access to your LUN, hence two devices with the same serial number.
You can run iscsiadm -m session ;iscsiadm -m target to get more info.
You should setup multipath and then place LVM on top of it: https://pve.proxmox.com/wiki/ISCSI_Multipath

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[ty628659]

Solved! Thanks a lot!