iSCSI, cluster of Proxmox, corruption ?

[saphirblanc]

Hello,

It's certainly written somewhere, but I didn't find it on https://pve.proxmox.com/wiki/Storage:_iSCSI
It's said that it's generally not recommended to mount multiple iSCSI LUN on a host as it leads to data corruption.

Therefore, how does Proxmox handle this when used inside a cluster.
I would understand the risks and how is it managed by proxmox in this case.

Thank you very much.

 

[menk]

hi saphirplanc,
you can mount multiple ISCSI LUN on an host.
But if You use in a Cluster, you have to use LVM over iscsi for multiple access.
So you don't have data corruption.

 

[saphirblanc]

Hi menk,
When you say "LVM over SCSI", can I access the same LVM twice, or I have to setup two LVM, one by host ? If the the second option is right, it means that the files are not shared between the two LVM, is it correct ?
Thanks you!

 

[menk]

Hi saphirblanc, after you have mount Iscsi Lun, add a LVM on it by GUI.
Remember to select the "shared" options.

 

[menk]

a good start point can be this:
https://icicimov.github.io/blog/vir...-volume-to-Proxmox-to-support-Live-Migration/