B-TREE FS
BTRFS for Linux
Install
apt-get install btrfs-progs echo "btrfs" >> /etc/modules reboot
Setup
Create a disk partition using gdisk
gdisk /dev/sda GPT fdisk (gdisk) version 1.0.6 Partition table scan: MBR: protective BSD: not present APM: not present GPT: present Found valid GPT with protective MBR; using GPT. Command (? for help): p Disk /dev/sda: 7814037167 sectors, 3.6 TiB Model: Portable Sector size (logical/physical): 512/4096 bytes Disk identifier (GUID): ED98F650-DC25-46BC-9D36-FCE4C20783C4 Partition table holds up to 128 entries Main partition table begins at sector 2 and ends at sector 33 First usable sector is 34, last usable sector is 7814037133 Partitions will be aligned on 2048-sector boundaries Total free space is 7811939948 sectors (3.6 TiB) Number Start (sector) End (sector) Size Code Name 1 2048 2099199 1024.0 MiB 8300 Linux filesystem
Format partition
mkfs.btrfs -f /dev/sda1
btrfs-progs v5.10.1
See http://btrfs.wiki.kernel.org for more information.
Label: (null)
UUID: 4ec8fe62-e6a2-432d-8fec-7eaf1e4bed19
Node size: 16384
Sector size: 4096
Filesystem size: 1.00GiB
Block group profiles:
Data: single 8.00MiB
Metadata: DUP 51.19MiB
System: DUP 8.00MiB
SSD detected: no
Incompat features: extref, skinny-metadata
Runtime features:
Checksum: crc32c
Number of devices: 1
Devices:
ID SIZE PATH
1 1.00GiB /dev/sda1
Mount partition
mkdir /mnt/1 mount /dev/sda1 /mnt/1 df -h /mnt/1 Filesystem Size Used Avail Use% Mounted on /dev/sda1 1.0G 3.5M 905M 1% /mnt/1
dmesg
BTRFS: device fsid 4ec8fe62-e6a2-432d-8fec-7eaf1e4bed19 devid 1 transid 5 /dev/sda1 scanned by mkfs.btrfs (768) BTRFS info (device sda1): using crc32c (crc32c-generic) checksum algorithm BTRFS info (device sda1): disk space caching is enabled BTRFS info (device sda1): checking UUID tree
fstab
UUID=f6eb5f98-032e-4634-b726-24f356c17af8 /opt btrfs noatime,nodiratime 0 0
mount -a systemctl daemon-reload
