Commits
Miao Xie committed ff61d17c632
Btrfs: Fix the problem that the replace destroys the seed filesystem The seed filesystem was destroyed by the device replace, the reproduce method is: # mkfs.btrfs -f <dev0> # btrfstune -S 1 <dev0> # mount <dev0> <mnt> # btrfs device add <dev1> <mnt> # umount <mnt> # mount <dev1> <mnt> # btrfs replace start -f <dev0> <dev2> <mnt> # umount <mnt> # mount <dev0> <mnt> It is because we erase the super block on the seed device. It is wrong, we should not change anything on the seed device. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>