snippetbashTip
btrfs balance — Balance block groups on a btrfs filesystem. More information: <https://btrfs.readthedocs.io/en/lates
Viewed 0 times
btrfs balancecommandbtrfsclifilesystembalanceblockgroups
linux
Problem
How to use the
btrfs balance command: Balance block groups on a btrfs filesystem. More information: <https://btrfs.readthedocs.io/en/latest/btrfs-balance.html>.Solution
btrfs balance — Balance block groups on a btrfs filesystem. More information: <https://btrfs.readthedocs.io/en/latest/btrfs-balance.html>.Show the status of a running or paused balance operation:
sudo btrfs {{[b|balance]}} status {{path/to/btrfs_filesystem}}Balance all block groups (slow; rewrites all blocks in filesystem):
sudo btrfs {{[b|balance]}} start {{path/to/btrfs_filesystem}}Balance data block groups which are less than 15% utilized, running the operation in the background:
sudo btrfs {{[b|balance]}} start {{[--bg|--background]}} -dusage={{15}} {{path/to/btrfs_filesystem}}Balance a max of 10 metadata chunks with less than 20% utilization and at least 1 chunk on a given device
devid (see btrfs filesystem show):sudo btrfs {{[b|balance]}} start -musage={{20}},limit={{10}},devid={{devid}} {{path/to/btrfs_filesystem}}Convert data blocks to the raid6 and metadata to raid1c3 (see mkfs.btrfs(8) for profiles):
sudo btrfs {{[b|balance]}} start -dconvert={{raid6}} -mconvert={{raid1c3}} {{path/to/btrfs_filesystem}}Convert data blocks to raid1, skipping already converted chunks (e.g. after a previous cancelled conversion operation):
sudo btrfs {{[b|balance]}} start -dconvert={{raid1}},soft {{path/to/btrfs_filesystem}}Cancel, pause, or resume a running or paused balance operation:
sudo btrfs {{[b|balance]}} {{cancel|pause|resume}} {{path/to/btrfs_filesystem}}Code Snippets
Show the status of a running or paused balance operation
sudo btrfs {{[b|balance]}} status {{path/to/btrfs_filesystem}}Balance all block groups (slow; rewrites all blocks in filesystem)
sudo btrfs {{[b|balance]}} start {{path/to/btrfs_filesystem}}Balance data block groups which are less than 15% utilized, running the operation in the background
sudo btrfs {{[b|balance]}} start {{[--bg|--background]}} -dusage={{15}} {{path/to/btrfs_filesystem}}Balance a max of 10 metadata chunks with less than 20% utilization and at least 1 chunk on a given device `devid` (see `btrfs filesystem show`)
sudo btrfs {{[b|balance]}} start -musage={{20}},limit={{10}},devid={{devid}} {{path/to/btrfs_filesystem}}Convert data blocks to the raid6 and metadata to raid1c3 (see mkfs.btrfs(8) for profiles)
sudo btrfs {{[b|balance]}} start -dconvert={{raid6}} -mconvert={{raid1c3}} {{path/to/btrfs_filesystem}}Context
tldr-pages: linux/btrfs balance
Revisions (0)
No revisions yet.