- btrfs_release_disk_super(page);
-> error_bdev_put:
You need a check whether page_primary is set here and release it,
otherwise you are leaking it. This needs to handle both the primary sb
read failure (where page_primary might not be set) as well as any FSID
mismatch from loop.
On 28.03.2018 02:39, Anand Jain wrote:
> During the btrfs dev scan make sure that other copies of superblock
> contain the same fsid as the primary SB. So that we bring to the
> user notice if the superblock has been overwritten.
>
> mkfs.btrfs -fq /dev/sdc
> mkfs.btrfs -fq /dev/sdb
> dd
During the btrfs dev scan make sure that other copies of superblock
contain the same fsid as the primary SB. So that we bring to the
user notice if the superblock has been overwritten.
mkfs.btrfs -fq /dev/sdc
mkfs.btrfs -fq /dev/sdb
dd if=/dev/sdb of=/dev/sdc count=4K skip=64K seek=64K obs=1
