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Forum Discussion
Running defrag, losing 1GB a minute
I am running defrag for the first time in a while... and my free space is dropping like crazy. Size Used Avail Use% Mounted on 30T 28T 632G 98% /data When this started, I had over 1TB o...
Also, there are no snapshots. just wanted to clarify that up front so that can't be the cause.
Sounds like some of your files probably use CoW.
Do you (or did you) have bit-rot protection enabled on any of your shares? This is separate to CoW but we link enabling/disabling bit-rot protection to enabling/disabling CoW.
You should free up space before running volume maintenance on a volume that is this full.
Which firmware are you running?
What does your initrd.log look like?my initrd.log:
2014/01/15 14:52:32] Factory default initiated by button! [2014/01/15 14:52:47] Defaulting to X-RAID2 mode, RAID level 5 [2014/01/15 14:53:03] Factory default initiated on ReadyNASOS 6.0.4. [2014/01/15 14:49:34] Updated from ReadyNASOS 6.0.4 to 6.1.5. [2014/01/15 16:02:20] Updated from ReadyNASOS 6.1.5 to 6.1.6. [2014/04/14 05:09:27] Updated from ReadyNASOS 6.1.6 (1389750453) to 6.1.7 (1396977042). [2014/05/24 11:33:24] Updated from ReadyNASOS 6.1.7 (1396977042) to 6.1.8 (1398980083). [2014/10/28 16:39:30] Updated from ReadyNASOS 6.1.8 (1398980083) to 6.1.9 (1409791183).
I have Bitrot Protection (Copy on Write) enabled on all shares. Not sure wha tyou mean by Bitrot being separate to CoW since its the same option.
Firmware 6.4.2.
What's the link between what I am seeing and bitrot?
They are not the same thing but we link enabling them/disabling them.
Running a defrag won't uncow files. It will break the CoW link between current data and snapshots, but even if not using snapshots you will see an increase in volume usage if you are using CoW.
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