How to configure Btrfs on Centos 7

Check unit to add

#fdisk -l

Return:

Exemplo:
Selecione o disco
Disk /dev/sdb: 17.2 GB, 17179869184 bytes, 33554432 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

Adding partition:

#fdisk /dev/sdb
# M – “Show all options available”
# P – “Type ” p” to display information on the disc as the current partitions”
# n – “Show all options available”
# p – “primary partition”
# 1 – “Partition number 1”
# enter – “default”
# enter – “default”
# w “List unit”

Check unit created

# fdisk -l

Check BTRFS Version and Installation

#yum search btrfs
#yum install btrfs-progs.x86_64

FSTAB access the file and add the mount point and compression

#vim /etc/fstab

Add the following line:

/dev/sdb1 /opt btrfs compress=zlib,compress-force=zlib 1 1

Assembling Compression :

#mkfs.btrfs /dev/sdb1 -f

Restart the machine and starting from this moment the unit / opt ‘ll be using btrfs to compress the files.

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