iSCSI LVM no snapshot....alternatives?

Thomas Plant

Mar 28, 2018

we have installed a Open-E cluster and originally intended to share the disks via iSCSI. But LVM on top of iSCSI does not support snapshots, which is very bad for us. Looking at would have prevented the surprise, I know. :)

lvm-thin does not work on iSCSI as of the page, which would support snapshots. Is the only alternative NFS?

I would not recommend to use ISCSI, use CEPH instead of it, if you can change it.

ISCSI has more negatives in my opinion, it's harder to setup / maintain. If you mount an LUN the wrong way, you can destroy all of your data.
Think we will go the NFS way. From a very basic test, speed test is almost the same and with qcow2 we have snapshots for the VMs.


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