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RN31200 Backup to External USB fails due to snapshots
Model Number RN312 with two 2TB hard drives. Firmware 6.6 I am in the process of upgrading my harddrives to larger capacity drives. Following the instructions, the recommended first step is to ...
So after some additional research and some trial and error, I think I found the answer. When a snapshot is created for snapshot purposes, its labeled as "c_######". Apparently, when you do a backup, before it starts copying files, internally it creates a snapshot called "b_######". I can only assume the "b" mean a backup based snapshot. Wathcing things through SSH it appears that snapshot only lives during the backup process and is then cleaned up afterwards. In my case, and the reason I started all this, was that I was down to only 50GB of 2TB of space. It would seem that the root cause of the issue was that since there wasn't enough space, it was not able to create that backup snapshot and therefore would throw that error that the snapshot file didn't exist. Once I cleared up a couple other snapshots and content (enough to free up 250GB), backups started working as expected.
Thought I would share my findings in case it helps anyone out there.
thanks
Mark
So after some additional research and some trial and error, I think I found the answer. When a snapshot is created for snapshot purposes, its labeled as "c_######". Apparently, when you do a backup, before it starts copying files, internally it creates a snapshot called "b_######". I can only assume the "b" mean a backup based snapshot. Wathcing things through SSH it appears that snapshot only lives during the backup process and is then cleaned up afterwards. In my case, and the reason I started all this, was that I was down to only 50GB of 2TB of space. It would seem that the root cause of the issue was that since there wasn't enough space, it was not able to create that backup snapshot and therefore would throw that error that the snapshot file didn't exist. Once I cleared up a couple other snapshots and content (enough to free up 250GB), backups started working as expected.
Thought I would share my findings in case it helps anyone out there.
thanks
Mark
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