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documentation: doc/FAQ.md: fixed headings

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Axel Burri 2015-07-17 14:32:35 +02:00
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@ -30,7 +30,7 @@ using btrbk:
/dev/sda1 /mnt/data btrfs subvolid=0 [...]
btrbk is designed to operate on the subvolumes *within* `/mnt/data`.
The recommended way is to split your data into subvolumes, e.g:
The recommended way is to split your data into subvolumes, e.g.:
# btrfs subvolume create /mnt/data/www
# btrfs subvolume create /mnt/data/mysql
@ -80,7 +80,7 @@ a good entry point.
<!-- TODO: add links to recommendations for ubuntu and other distros -->
## btrfs root
### btrfs root
If your linux root filesystem is btrfs, I recommend booting linux from
a btrfs subvolume, and use the btrfs root only as a container for
@ -109,7 +109,7 @@ How do I convert '/' (subvolid=0) into a subvolume?
There's several ways to achieve this, the solution described below is
that it guarantees not to create new files (extents) on disk.
## Step 1: make a snapshot of your root filesystem
### Step 1: make a snapshot of your root filesystem
Assuming that '/' is mounted with `subvolid=0`:
@ -119,7 +119,7 @@ Note that this command does NOT make any physical copy of the files of
your subvolumes within "/", it will only add some metadata.
## Step 2: make sure that "/rootfs/etc/fstab" is ok.
### Step 2: make sure that "/rootfs/etc/fstab" is ok.
Add mount point for subvolid=0 to fstab, something like this:
@ -128,7 +128,7 @@ Add mount point for subvolid=0 to fstab, something like this:
/dev/sda1 /mnt/btr_pool btrfs subvolid=0,noatime 0 0
## Step 3: boot from the new subvolume "rootfs".
### Step 3: boot from the new subvolume "rootfs".
Either add `rootflags=subvol=rootfs` to grub.cfg, or set subvolume
"rootfs" as default:
@ -136,7 +136,7 @@ Either add `rootflags=subvol=rootfs` to grub.cfg, or set subvolume
# btrfs subvolume set-default <subvolid> /
## Step 4: after reboot, check if everything went fine:
### Step 4: after reboot, check if everything went fine:
First check your **system log** for btrfs errors, then:
@ -153,8 +153,7 @@ Great, this tells us that we just booted into our new snapshot!
This means that the root volume (subvolid=0) is correctly mounted.
## Step 5: delete old (duplicate) files
### Step 5: delete old (duplicate) files
Carefully delete all old files from `/mnt/btr_pool`, except "rootfs"
and all other subvolumes within "/". You can list all these by typing:
@ -168,5 +167,3 @@ something like:
# cd /mnt/btr_pool
# rm -rf bin sbin usr lib var ...