I have my concerns about COW and SSDs/M.2 devices. From what I understand about the latter devices, they do their own COW. Every so often (weekly?) or more often, one has to run a fstrim -A. What I do right now, is run a fstrim -A before doing a btrfs filesystem defrag, followed by a follow up fstrim -A after the defrag completes.
I WOULD LIKE TO BE ABLE TO DO A MOUNT /DEV/XXX /mnt and then run the btrfs filesystem defrag /mnt. The concern I have is about ownership of the btrfs blocks. Does anyone know if it is safe to do what I want via /mnt, using a partition at a time.
I WOULD LIKE TO BE ABLE TO DO A MOUNT /DEV/XXX /mnt and then run the btrfs filesystem defrag /mnt. The concern I have is about ownership of the btrfs blocks. Does anyone know if it is safe to do what I want via /mnt, using a partition at a time.
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