From Fedora Project Wiki
Description
/home on bcache (no LVM) Once your fresh Fedora 20 system is running, we will "move" /home to a bcache device. To do this it's convenient to have a minimum amount of data on /home.
Prerequisites
QA:Testcase_bcache-tools-prerequisites
Setup
- Open terminal
- Switch to root user:
su -
- Install bcache tools:
yum install bcache-tools
- If needed "backup" all data in /home to another place on your root filesystem:
- comment /home out in your /etc/fstab
- unmount /home (which is on /dev/sda2)
- Make /dev/sda2 a bcache backing device:
make-bcache -B /dev/sda2
- Make /dev/sdb1 a bcache caching device:
make-bcache -C /dev/sdb1
- Note the set uuid and attach /dev/sdb1 to /dev/sda2:
echo <set uuid> > /sys/block/bcache0/bcache/attach
Now you have a bcache device: /dev/bcache0
- use "
bcache-status -s
" to see details about your bcache device. - create a filesystem:
mkfs -t ext4 -L HOME /dev/bcache0
- create a /home entry in your /etc/fstab:
LABEL=HOME /home ext4 defaults 1 2
- mount /home:
mount -a
- If needed restore the /home backup you made earlier.
Now you have a system with /home on bcache.
How to test
- reboot your system to see if it boots OK.
- do some other tests generation I/O on /home if you like.
Expected Results
- All steps complete without errors