Now lsblk uses --list when --sort <column> is specified. This patch
allows to specify --tree to overwrite this default behavior add to
force tree-like output. In this case tree branches are sorted by the
<column>.
$ lsblk --sort SIZE
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda2 8:2 0 200M 0 part /boot
sda1 8:1 0 200M 0 part /boot/efi
sda6 8:6 0 7.8G 0 part [SWAP]
sda5 8:5 0 35.1G 0 part /home/misc
sda4 8:4 0 50G 0 part /
sdb1 8:17 0 74.5G 0 part /home/archive
sdb 8:16 0 74.5G 0 disk
sda3 8:3 0 130.3G 0 part /home
sda 8:0 0 223.6G 0 disk
$ lsblk --sort SIZE --tree
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sdb 8:16 0 74.5G 0 disk
└─sdb1 8:17 0 74.5G 0 part /home/archive
sda 8:0 0 223.6G 0 disk
├─sda2 8:2 0 200M 0 part /boot
├─sda1 8:1 0 200M 0 part /boot/efi
├─sda6 8:6 0 7.8G 0 part [SWAP]
├─sda5 8:5 0 35.1G 0 part /home/misc
├─sda4 8:4 0 50G 0 part /
└─sda3 8:3 0 130.3G 0 part /home
Signed-off-by: Karel Zak <kzak@redhat.com>