Description of problem: When issuing a wipefs -a on a btrfs volume, there should be three signatures removed but only one is removed.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
# mkfs.btrfs /dev/sdb
# wipefs -a /dev/sdb
/dev/sdb: 8 bytes were erased at offset 0x00010040 (btrfs): 5f 42 48 52 66 53 5f 4d
Only 8 bytes erased at offset 0x00010040
8 bytes should be additionally erased at offsets 0x04000040 and 0x1000000040.
64KB, 64MB, 256GB.
Sort of a duplicate but I decided to open a new bug against util-linux/libblkid per original bug 889888 comment 28. But then barely 2 minutes later I found this:
I guess nevermind!