Hi ,
I am new to btrfs and wonder what I need to do to move subvolumes to the
right filesystem. I see the following:
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /
devtmpfs 235M 8.0K 235M 1% /dev
tmpfs 242M 84K 242M 1% /dev/shm
tmpfs 242M 2.4M 240M 1% /run
tmpfs 242M 0 242M 0% /sys/fs/cgroup
/dev/mapper/system_13.2-usr_lv 18G 6.9G 10G 41% /usr
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /srv
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /.snapshots
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /tmp
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /usr/local
/dev/sda2 486M 59M 398M 13% /boot
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32%
/boot/grub2/x86_64-efi
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /boot/grub2/i386-pc
/dev/mapper/export_vg-export_lv 20G 18G 2.9G 86% /export
/dev/mapper/export_vg-src_lv 5.0G 2.6G 2.5G 51% /src
/dev/mapper/system_13.2-var_lv 4.0G 196M 3.4G 6% /var
/dev/mapper/system_13.2-opt_lv 6.0G 152M 5.3G 3% /opt
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/spool
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/tmp
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/opt
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/log
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/lib/named
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/lib/mailman
/dev/mapper/system_13.2-root_lv 5.0G 1.5G 3.2G 32% /var/lib/pgsql
and I would like to have all the var subvolumes using the /var filesystem
space and not root. The same for /boot/grub2 subvolumes. They should use
the /boot filesystem. I don't know how I got to this and don't know how to
change.
# cat /etc/fstab
UUID=d300b5ad-372b-4f86-b952-4aa4fc62a84e swap swap defaults 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f / btrfs defaults 0 0
UUID=fd14684f-1950-4f33-95b5-b54f069b4fe0 /boot ext4 acl,user_xattr 1 2
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /boot/grub2/i386-pc btrfs
subvol=boot/grub2/i386-pc 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /boot/grub2/x86_64-efi btrfs
subvol=boot/grub2/x86_64-efi 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /home btrfs subvol=home 0 0
UUID=f535177b-18a5-443c-8236-96105d58a621 /opt btrfs defaults 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /srv btrfs subvol=srv 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /tmp btrfs subvol=tmp 0 0
UUID=62ffc2f3-7e3a-433e-8a4e-5a89a352f8cf /usr btrfs defaults 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /usr/local btrfs subvol=usr/local
0 0
UUID=323ba68a-e7ed-4f0f-9716-dcad92bb9808 /var btrfs defaults 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/crash btrfs subvol=var/crash
0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/lib/mailman btrfs
subvol=var/lib/mailman 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/lib/named btrfs
subvol=var/lib/named 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/lib/pgsql btrfs
subvol=var/lib/pgsql 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/log btrfs subvol=var/log 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/opt btrfs subvol=var/opt 0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/spool btrfs subvol=var/spool
0 0
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /var/tmp btrfs subvol=var/tmp 0 0
/dev/export_vg/export_lv /export xfs defaults 1 2
/dev/export_vg/src_lv /src xfs defaults 1 2
UUID=7a681ad4-5b82-4e78-9b20-1d719c89fe6f /.snapshots btrfs
subvol=.snapshots 0 0
Thank you
Markus
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