On Fri, 2020-11-06 at 11:18 +0000, Patrick O'Callaghan wrote:
On Fri, 2020-11-06 at 05:43 +0000, Qiyu Yan wrote:
You can use swapfile on btrfs with nocow [...] https://wiki.archlinux.org/index.php/btrfs#Swap_file for instructions
Great. I was actually wondering about precisely that, so I'm glad to see it's supported with the right incantations.
Trying to follow the instructions in the above URL, but clearly I'm misunderstanding something:
# btrfs sub create /SWAP Create subvolume '//SWAP' # btrfs property set /SWAP compression no # btrfs sub show /SWAP root/SWAP Name: SWAP UUID: 1d4d839a-fd4e-d345-8d3f-ea858af71982 Parent UUID: - Received UUID: - Creation time: 2020-11-06 11:41:37 +0000 Subvolume ID: 1311 Generation: 14657 Gen at creation: 14547 Parent ID: 257 Top level ID: 257 Flags: - Snapshot(s): # cd /SWAP # truncate -s 0 ./swapfile # chattr +C /SWAP chattr: Invalid argument while setting flags on /SWAP
What am I missing?
poc