On 2020/1/16 上午8:34, Michael Ruiz wrote: > Hi, > I have a //@swap subvolume and i have a swapfile within it. I mount the > subvolume like such in fstab: > > `rw,ssd,nofail,noautodefrag,nodatacow,nodatasum,subvolid=1234,subvol=/@swap` > > It mounts correctly, but 1/15/20 4:20 PM kernel I get: > > `BTRFS warning (device dm-0): swapfile must not be copy-on-write` > > I did chattr +C on the empty swapfile as per arch wiki instructions. The only > problem is that it does not work after reboot... Does btrfs allow subvolumes > to have different mount options? If that file has nodatacow, then it may be possible that you had a snapshot of that subvolume, and caused problem. Thanks, Qu
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