Btrfs volume copy and compression in incus

zig · September 14, 2024, 2:06pm

Hi all,
I just noticed that since btrfs-progs and linux 6.0, there is an option “–compressed-data” to the send command that allow to send compressed data as is, and if the receiver support it, write them as is without the need to decompress and recompress.
I was wondering whether incus copy commands take advange of this option ?

candlerb · September 15, 2024, 9:55am

It doesn’t seem so:

github.com

lxc/incus/blob/v6.5.0/internal/server/storage/drivers/driver_btrfs_utils.go#L349-L355


      
          	args := []string{"send"}
          	if parent != "" {
          		args = append(args, "-p", parent)
          	}
          
          	args = append(args, path)
          	cmd := exec.Command("btrfs", args...)