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btrfs-enable-dynamic-periodic-reclaim: initial commit

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This commit is contained in:
Aminda Suomalainen 2026-04-01 13:19:32 +03:00
parent a6ef9d3d22
commit 30c6067a7c
Signed by: Mikaela
GPG Key ID: 99392F62BAE30723
1 changed files with 30 additions and 0 deletions
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bash/usr-local-bin/btrfs-enable-dynamic-periodic-reclaim Executable file
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#!/usr/bin/env bash
# Enable dynamic and periodic reclaim for currently mounted BTRFS filesystems
# and try to keep them enabled on boot through systemd-tmpfiles.
# WARNING: will not persist over remount
# Ensure we are root
if [ "$(id -u)" != "0" ]; then
echo "This script obviously requires root"
exit 1
fi
# If the previous file was removed within the for loop, it would erase
# configuration for other than the last filesystem.
if [ -f "/etc/tmpfiles.d/btrfs-enable-dynamic-periodic-reclaim.conf" ]; then
rm /etc/tmpfiles.d/btrfs-enable-dynamic-periodic-reclaim.conf
fi
# Loop through filesystems
for filesystem in /sys/fs/btrfs/*; do
# Exclude /sys/fs/btrfs/btrfs/features
if [ -d "${filesystem}/allocation/data/" ]; then
echo 1 > ${filesystem}/allocation/data/dynamic_reclaim
echo 1 > ${filesystem}/allocation/data/periodic_reclaim
# Adapted from https://wiki.archlinux.org/title/Gaming#Make_the_changes_permanent
# to have these options set on boot instead of having to rerun this script automatically
echo "w ${filesystem}/allocation/data/dynamic_reclaim - - - - 1" >> /etc/tmpfiles.d/btrfs-enable-dynamic-periodic-reclaim.conf
echo "w ${filesystem}/allocation/data/periodic_reclaim - - - - 1" >> /etc/tmpfiles.d/btrfs-enable-dynamic-periodic-reclaim.conf
fi
done