btrfs

Use ZFS on Linux instead!

http://www.funtoo.org/BTRFS_Fun

Install

# yum install btrfs-progs

Jeigu kuriam is vieno disko:

# mkfs.btrfs -m single /dev/sdb
# mount -o compress=zlib

compress=zlib - Better compression ratio. It is the default and safe for olders kernels. compress=lzo - Faster compressions, newer kernels.

Info

# btrfs filesystem show
# btrfs filesystem df

Test A

10x 300mb

be comp

real	1m57.278s
user	0m0.044s
sys	0m5.639s

Jei testuojame su loop, ir norime daryti masyva is keliu failu, reikia daryti kitaip:

Create and mount a filesystem made of several disk images

# mkfs.btrfs img0 img1 img2
# losetup /dev/loop0 img0
# losetup /dev/loop1 img1
# losetup /dev/loop2 img2
# mount /dev/loop0 /mnt/btrfs