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Backup & restore iscsi_lun_backing_store on RNDU2000
Hello guys, I need to wipe all data from my drives + do a factory reset and I'm wondering if I can just copy the iscsi_lun_backing_store file and restore it after wiping. Do I have to configure ...
I finally got some time to make it work.
Regarding main topic, just for the record: like kohdee said, exact LUN config is needed. Then it's enough to just copy iscsi_lun_backing_store and .serial_number. After this operation i've noticed that the free space diminished twice the size of my LUN. Unassigning the LUN and assigning it back to a group did the trick.
As for the other data, it wasn't so straightforward. In my case, despite the fact my backed up readynasd database file was quite large, for some reason, selecting data from any of its tables returned zero rows.
Copying my old ._share/ and /etc/frontview/*/Shares.conf did not work either. They were overwritten by defaults on each reboot - even after inserting proper data into db.
I wasn't up for creating btrfs subvolumes (thx kohdee for the info, I wouldn't come up with that) manually, so I had to create all the shares from frontview and then do update/insert on db.
If you're trying to restore a LUN, create a new LUN exactly the same, then overwrite it with the iscsi_lun_backing_store and the .serialnumber file that is also in the system. Some initiators would not mount correctly if the serialnumber file is not there. There's no need to make changes to the ._share if you create the LUN before then overwrite.
Thx kohdee.
I'm not sure if I remember the exact LUN configuration. I just got second RNDU2000, I'll upgrade it to same RNOS and try copying LUN.
About the other files I've mentioned (like ._share): just wanted to get back my configuration as I don't have any recent config backup.
I'll rebuild dir structure with ACLs and play a bit with copying over system files from old unit... and report back my findings here.
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