test

pjack@ubuntu1104-64-5:/etc/ceph$ sudo mkfs -t btrfs /dev/ubuntu1104-64-5/lvol2
 
WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using
 
fs created label (null) on /dev/ubuntu1104-64-5/lvol2
        nodesize 4096 leafsize 4096 sectorsize 4096 size 50.00GB
Btrfs Btrfs v0.19

# 把這塊 Mount 起來
pjack@ubuntu1104-64-5:/mnt$ sudo mount /dev/mapper/ubuntu1104--64--5-lvol0 /mnt/lvol0
 
# 看一下結果
pjack@ubuntu1104-64-5:/mnt$ df
Filesystem                               1K-blocks      Used Available Use% Mounted on
/dev/mapper/ubuntu1104--64--5-lvol0       52428800        56  50302976   1% /mnt/lvol2
 
# 看一下format
pjack@ubuntu1104-64-5:/lib/modules/2.6.38-8-server/kernel/fs$ mount -l
/dev/mapper/ubuntu1104--64--5-lvol0 on /mnt/lvol2 type btrfs (rw)