Was checking in on my NAS today and notices something odd.
I'm still digging into causes. Just wondering if anyone has had a similar issue.
The volume is scrubbed once a day and the disks are showing as healthy.
You will notice in the bottom-left where the green is Free space and the red is Used space. The more you use, the less free space you have.
But the total capacity shouldn't be shrinking,
Are snapshots counted as part of the used space? Because the used space seems to drop at intervals.
I am using snapshots but the free space has been stable for months. Its only in April that there has been a change.
Still combing the FreeNAS forums for similar issues, no luck as of yet. Time for bed though. LANSYndicate to get to tomorrow.
lucky bugger
I've been using freeNAS for a little while so I only have a little knowledge on it. I've not noticed anything like that happening. All I can guess is maybe a jail? Or some executable file using the space in the directory? But I'm really just grasping at straws here I'm afraid.
It's not. The amount of storage used by snapshots isn't as straightforward as you may think: https://blogs.oracle.com/observatory/entry/understanding_the_space_used_by
The only time I have seen something similar is; If you have other datasets setup, as those fill with data the free space drops (like what is seen here) on other datasets. So there is likely something else swallowing data.
Back from the LAN and settling back into the real world.
Took a look at my NAS this morning and I am back to my proper 15T capacity. I haven't done any work on it save for pushing an update to the version 10 stream.
Will post if I uncover the cause.