rebalance / defragment is optional
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@@ -17,6 +17,7 @@ TMP_MNT=${TMP_MNT:-/var/tmp/btrfs-backup}
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vols=()
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vols=()
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del=${DEL}
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del=${DEL}
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dryrun=0
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dryrun=0
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fast=0
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periodity=${0%/*}
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periodity=${0%/*}
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periodity=${periodity##*/}
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periodity=${periodity##*/}
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if [[ $periodity =~ ^cron\... ]]; then
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if [[ $periodity =~ ^cron\... ]]; then
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@@ -24,11 +25,12 @@ if [[ $periodity =~ ^cron\... ]]; then
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else
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else
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periodity=
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periodity=
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fi
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fi
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case "$periodity" in
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case "$periodity" in
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(.hourly) del=${HOURLY_DEL};;
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(.hourly) del=${HOURLY_DEL}; fast=1;;
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(.daily) del=${DAILY_DEL};;
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(.daily) del=${DAILY_DEL};;
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(.weekly) del=${WEEKLY_DEL};;
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(.weekly) del=${WEEKLY_DEL}; fast=1;;
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(.monthly) del=${MONTHLY_DEL};;
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(.monthly) del=${MONTHLY_DEL}; fast=1;;
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esac
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esac
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while test $# -gt 0; do
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while test $# -gt 0; do
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case "$1" in
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case "$1" in
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@@ -39,6 +41,7 @@ OPTIONS
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-h, --help show this help
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-h, --help show this help
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-n, --dry-run execute dry run, do not backup, just show commands
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-n, --dry-run execute dry run, do not backup, just show commands
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-f, --fast fast run, do not optimize btrfs (otherwise done daily)
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-p, --path <path> add a path that contains a btrfs (sub-) volume
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-p, --path <path> add a path that contains a btrfs (sub-) volume
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(defaults to: ${BTRFS_VOLUMES})
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(defaults to: ${BTRFS_VOLUMES})
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-m, --mnt <path> temporary mount point (default: ${TMP_MNT})
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-m, --mnt <path> temporary mount point (default: ${TMP_MNT})
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@@ -74,6 +77,7 @@ appended to the snapshot name, and the expiry is set meaningfull:
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EOF
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EOF
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exit;;
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exit;;
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(-n|--dry-run) dryrun=1;;
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(-n|--dry-run) dryrun=1;;
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(-f|--fast) fast=1;;
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(-p|--path) shift; vols+=( "$1" );;
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(-p|--path) shift; vols+=( "$1" );;
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(-m|--mnt) shift; TMP_MNT="$1";;
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(-m|--mnt) shift; TMP_MNT="$1";;
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(-d|--del) shift; del="$1";;
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(-d|--del) shift; del="$1";;
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@@ -126,6 +130,10 @@ for fs in ${BTRFS_VOLUMES}; do
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done
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done
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fi
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fi
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echo " " umount "$TMP_MNT"
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echo " " umount "$TMP_MNT"
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if test $fast -eq 0; then
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echo " " btrfs filesystem defragment ${fs}
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echo " " btrfs balance start ${fs}
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fi
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else
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else
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sudo btrfs subvolume snapshot "${TMP_MNT}${subvol}" "${TMP_MNT}${target}${date}"
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sudo btrfs subvolume snapshot "${TMP_MNT}${subvol}" "${TMP_MNT}${target}${date}"
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if test -n "$del"; then
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if test -n "$del"; then
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@@ -135,6 +143,10 @@ for fs in ${BTRFS_VOLUMES}; do
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fi
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fi
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fi
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fi
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sudo umount "$TMP_MNT"
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sudo umount "$TMP_MNT"
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if test $fast -eq 0; then
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sudo btrfs filesystem defragment ${fs}
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sudo btrfs balance start ${fs}
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fi
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else
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else
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echo "ERROR: no device found for $fs" 1>&2
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echo "ERROR: no device found for $fs" 1>&2
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exit 2
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exit 2
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@@ -4,7 +4,7 @@ for f in hourly daily weekly monthly; do
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sudo cp btrfs-snapshots.sh /etc/cron.$f/btrfs-snapshots;
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sudo cp btrfs-snapshots.sh /etc/cron.$f/btrfs-snapshots;
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done
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done
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if ! test -e /etc/btrfs-snapshots.conf; then
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if ! test -e /etc/btrfs-snapshots.conf; then
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cat > /etc/btrfs-snapshots.conf <<EOF
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sudo tee /etc/btrfs-snapshots.conf > /dev/null <<EOF
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HOURLY_DEL=4
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HOURLY_DEL=4
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DAILY_DEL=3
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DAILY_DEL=3
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WEEKLY_DEL=2
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WEEKLY_DEL=2
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