Test :: xenial
$ lsb_release -cs xenial
$ uname -rv 4.4.0-171-generic #200-Ubuntu SMP Tue Dec 3 11:04:55 UTC 2019
$ dpkg -s bcache-tools xfsprogs | grep -i version Version: 1.0.8-2 Version: 4.3.0+nmu1ubuntu1.1
$ sudo hexdump -C $BACKING_DEV | grep -m2 -e XFSB -e 'fe ed ba be' 00002000 58 46 53 42 00 00 10 00 00 00 00 00 00 03 f0 00 |XFSB............| 00007000 fe ed ba be 00 00 00 01 00 00 00 02 00 00 00 14 |................|
Before:
$ dpkg -s libblkid1 | grep -i version Version: 2.27.1-6ubuntu3.9
$ sudo blkid -o udev -p $BACKING_DEV ID_FS_AMBIVALENT=other:bcache other:xfs_external_log
After:
$ dpkg -s libblkid1 | grep -i version Version: 2.27.1-6ubuntu3.10
$ sudo blkid -o udev -p $BACKING_DEV ID_FS_UUID=9dd54115-df08-4e6d-99eb-fb322fcfc04e ID_FS_UUID_ENC=9dd54115-df08-4e6d-99eb-fb322fcfc04e ID_FS_TYPE=bcache ID_FS_USAGE=other
Test :: xenial
$ lsb_release -cs
xenial
$ uname -rv
4.4.0-171-generic #200-Ubuntu SMP Tue Dec 3 11:04:55 UTC 2019
$ dpkg -s bcache-tools xfsprogs | grep -i version
Version: 1.0.8-2
Version: 4.3.0+nmu1ubuntu1.1
$ sudo hexdump -C $BACKING_DEV | grep -m2 -e XFSB -e 'fe ed ba be'
00002000 58 46 53 42 00 00 10 00 00 00 00 00 00 03 f0 00 |XFSB............|
00007000 fe ed ba be 00 00 00 01 00 00 00 02 00 00 00 14 |................|
Before:
$ dpkg -s libblkid1 | grep -i version
Version: 2.27.1-6ubuntu3.9
$ sudo blkid -o udev -p $BACKING_DEV T=other: bcache other:xfs_ external_ log
ID_FS_AMBIVALEN
After:
$ dpkg -s libblkid1 | grep -i version
Version: 2.27.1-6ubuntu3.10
$ sudo blkid -o udev -p $BACKING_DEV 9dd54115- df08-4e6d- 99eb-fb322fcfc0 4e ENC=9dd54115- df08-4e6d- 99eb-fb322fcfc0 4e
ID_FS_UUID=
ID_FS_UUID_
ID_FS_TYPE=bcache
ID_FS_USAGE=other