Btrfs: Difference between revisions

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*balance the data (takes some time)
*balance the data (takes some time)
  btrfs device balance /mnt
  btrfs device balance /mnt
*free space:
btrfs fi df /
*show snapshots
snapper list
*delete all snapshots
for i in {1..20000}; do snapper delete $i; done

Revision as of 14:35, 2 October 2012

  • list available devices
btrfs device scan
  • list available filesystems
btrfs filesystem show
  • create volume
mkfs.btrfs /dev/sdX
  • stripe across devices (mirror metadata + stripe data)
mkfs.btrfs /dev/sda /dev/sdb /dev/sdc
  • stripe across devices (stripe metadata + stripe data)
mkfs.btrfs -m raid0 /dev/sda /dev/sdb /dev/sdc
  • mirror across devices (mirror metadata + mirror data)
mkfs.btrfs -m raid10 -d raid10 /dev/sda /dev/sdb /dev/sdc
  • create subvolume
btrfs subvolume create /mnt/nonsense

where /mnt is the mountpoint of the btrfs volume

  • list subvolumes
btrfs subvolume list /mnt 
  • create snapshot
mkdir /mnt/snapshots
btrfs subvolume snapshot /mnt/nonsense /mnt/snapshots/vrijdag
  • add a new device
btrfs device add /dev/sda8 /mnt
  • remove a device
btrfs delete /dev/sdb /mnt
  • balance the data (takes some time)
btrfs device balance /mnt
  • free space:
btrfs fi df /
  • show snapshots
snapper list
  • delete all snapshots
for i in {1..20000}; do snapper delete $i; done