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Forum Discussion
ReadyNas 628x Mysterious Storage Consumption
I have an RN628x with 8x 2TB drives in RAID6. In total I have about 10.89TB of provisioned storage. Out of the main storage I have 3 main shares. I also have 1 thick provisioned LUN. I do not utilize...
Yea that snapshot is gone now anyway, the backup snap (b_.....). pwptech confirmed with live commands for me. The only snap that exists now is:
root@NAS-01:~# btrfs subv list -s /data ID 40579 gen 49790139 cgen 49790139 top level 6346 otime 2021-02-17 00:00:16 path MSDS/.snapshots/980/snapshot
I don't see this snap really causing an issue but I mentioned via PMs that it could be deleted, if not needed.
No snaps of the LUN exists.
I ran defragment for the iSCSI using 4096 block size. I notice the -v flag is for verbosity. Once I ran the command it only took a few minutes and this was the output. No noticeable size changes or gaining of space on the volume unfortunately.
root@NAS-01:~# btrfs fi defragment -t 4096 -v /data/VeeamBackups/.iscsi/iscsi_lun_backing_store /data/VeeamBackups/.iscsi/iscsi_lun_backing_store root@NAS-01:~#
If that didn't help then I am not sure what or if anything can be done about it, to be honest. You can always destroy and re-create the LUN (backup data inside LUN first) or simply just get larger disks and keep LUN the way it is but expand the volume on the NAS. Neither are ideal, I understand.
Thank you to everyone who assisted me, especially rn_enthusiast
For anyone wondering or running into a similar issue, I ended up having to factory reset the NAS and then rebuild the iSCSI LUN and my other file shares. First I tried deleting the iSCSI LUN but space was not properly reclaimed. I only gained about 2TB of space when it should have been over 6TB.
Because the iSCSI LUN was raw mapped to a virtual machine responsible for backups, I was able to copy the data from the LUN using MiniTool Partition Wizard Enterprise by doing a disk copy. This requires a storage drive attached to the VM that is the exact same size as the LUN. Once it was copied, I revised the backup jobs to use the new temporary storage while I rebuilt the NAS. Also make sure to enable deduplication on the temporary storage if it was enabled on your raw mapped LUN. Do not copy deduplicated data to non-deuplicated storage otherwise it will reinflate.
Thanks for sharing your solution. I see they have a free version that looks like it could also accomplish this.
I suspect that a larger device with a partition the same size would have also worked.
Thanks for sharing pwptech :) Glad it worked out in the end. I did suspect a FD of the NAS was necesary.
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