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# Switch to root user: <code>su -</code> | # Switch to root user: <code>su -</code> | ||
# Install bcache tools: <code>yum install bcache-tools</code> | # Install bcache tools: <code>yum install bcache-tools</code> | ||
# 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 | 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. | Now you have a system with /home on bcache. | ||
|actions= | |||
* reboot your system to see if it boots OK. | |||
* do some other testing if you like. Limit the amount of data on /home or accept that it gets lost in the following steps. | |||
|results= | |results= | ||
* All steps completes without error | * All steps completes without error | ||
}} | }} |
Revision as of 17:36, 10 October 2013
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. Do the following steps:
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 testing if you like. Limit the amount of data on /home or accept that it gets lost in the following steps.
Expected Results
- All steps completes without error