[SOLVED] RBD storage over iscsi as LVM

Railfox

New Member
Nov 9, 2019
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Hello. I have cluster of three proxmox nodes with version 3.4-6
I have started a file cluster storage by Ceph, have created rdb image and have created iscsi target (tgt-rdb) on two monitors of file cluster.
ISCSI target accessible from nodes, so i have connected them as multipath device.
Then i have added new ISCSI storage in proxmox gui, and LVM storage on it with group "images". So i have no problem, storage works.
Then i have created new VM with disk, install Debian 10, seems to have no problem. Machine works, but when i try to create backup i have error :

INFO: starting new backup job: vzdump 166 --remove 0 --mode snapshot --compress lzo --storage backup --node node1
INFO: Starting Backup of VM 166 (qemu)
INFO: status = running
INFO: update VM 166: -lock backup
Volume group "images" not found
ERROR: Backup of VM 166 failed - can't activate LV '/dev/images/vm-166-disk-1': Skipping volume group images
INFO: Backup job finished with errors
TASK ERROR: job errors

vgdisplay don't found this group, as it not LVM.

I cant upgrade proxmox now, and cant connect rbd native (too old kernel client).

How it can be - vm created, have no grub error, but no backups?
 
Volume group "images" not found
ERROR: Backup of VM 166 failed - can't activate LV '/dev/images/vm-166-disk-1': Skipping volume group images
It fails, because it didn't find the VG 'images'.

I cant upgrade proxmox now, and cant connect rbd native (too old kernel client).
What does the failed backup have to do with the upgrade? As I assume the Ceph cluster is not running on Proxmox.
 
Have chacked some times and found that multipath tools broke iSCSI LVM storage. With delete multipath have no problems in work with storage.
 

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