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so for years now I've been using btrfs without any issues, up until recently when I noticed all of my new files seem to have a +C attributes, there is some that do not, I've been unable to figure out what causes file attribute to have +C

under my understanding, if I run:

chattr -C file

it should remove the C attribute, but not even with sudo that command seems to do anything, altho I can add/remove other attributes, just not C.

I assumed it could be to fstab but seems to be good, i even added datacow at the end

UUID=ed0d0921-a6cd-48c0-ab59-27b7b7e8bdd2 /home/jawz/Misc/HD btrfs defaults,noatime,space_cache=v2,commit=120,compress=zstd,datacow 0 0

Is there any way that I can fix my filesystem so the files can be copy on write again?

Danilo Reyes
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  • FYI, this isn't really the best Stack Exchange site to post this question since Stack Overflow is for programming questions. This question will likely be closed because of this. Have a look at [Super User](https://superuser.com/questions/tagged/btrfs) and [Server Fault](https://serverfault.com/questions/tagged/btrfs). – rickhg12hs Dec 14 '21 at 08:40

1 Answers1

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According to the btrfs wiki FAQ:

... the COW status can be modified only for empty or newly created files.

If you really need to change the COW status, I suppose you will need to copy your current files to new files.

rickhg12hs
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    I was afraid of something like that, yeah made a quick script to move the files from one hard drive mount to another and then move them back, thanks for pointing me on the right direction! – Danilo Reyes Dec 14 '21 at 17:27