81 lines
2.4 KiB
Shell
Executable file
81 lines
2.4 KiB
Shell
Executable file
#!/bin/bash
|
|
|
|
KEEP_DAILY=${KEEP_DAILY:-6}
|
|
KEEP_WEEKLY=${KEEP_WEEKLY:-3}
|
|
KEEP_MONTHLY=${KEEP_MONTHLY:-48}
|
|
KEEP_YEARLY=${KEEP_YEARLY:-10}
|
|
|
|
echo "Starting backup script at $(date)"
|
|
|
|
export BORG_RSH='ssh -oBatchMode=yes' # https://borgbackup.readthedocs.io/en/stable/usage/notes.html#ssh-batch-mode
|
|
|
|
# break any stale locks in case the script was interrupted
|
|
borg break-lock
|
|
|
|
if ! borg info; then
|
|
echo "Borg info returned a non-zero status. Initializing Borg..."
|
|
borg init --encryption=repokey
|
|
fi
|
|
|
|
# The above command will fail if the repo hasn't been already initialized,
|
|
# so we can ignore the return status. However, if any of the commands below fail,
|
|
# we want to stop the script immediately.
|
|
set -e
|
|
|
|
if [ -d "/snapshot/btrfs-root" ]; then
|
|
btrfs subvolume delete /snapshot/btrfs-root
|
|
fi
|
|
|
|
btrfs subvolume snapshot /btrfs-root /snapshot
|
|
|
|
cd "/snapshot/btrfs-root$BACKUP_RELATIVE_PATH"
|
|
|
|
# Generate exclusions for git-untracked files if enabled
|
|
EXCLUDE_ARGS=(--exclude-from /exclude.conf)
|
|
if [ "${IGNORE_GIT_UNTRACKED:-false}" = "true" ]; then
|
|
echo "Generating exclusions for git-untracked files..."
|
|
GIT_EXCLUDE_FILE=$(mktemp)
|
|
|
|
# Find all git repositories and list their untracked files
|
|
find . -name .git -type d 2>/dev/null | while read -r gitdir; do
|
|
repo_dir=$(dirname "$gitdir")
|
|
(
|
|
cd "$repo_dir"
|
|
# Get untracked files (respecting .gitignore)
|
|
git ls-files --others --exclude-standard 2>/dev/null | while read -r file; do
|
|
# Output path relative to backup root
|
|
echo "${repo_dir#./}/$file"
|
|
done
|
|
)
|
|
done > "$GIT_EXCLUDE_FILE"
|
|
|
|
excluded_count=$(wc -l < "$GIT_EXCLUDE_FILE")
|
|
echo "Found $excluded_count git-untracked files to exclude"
|
|
|
|
EXCLUDE_ARGS+=(--exclude-from "$GIT_EXCLUDE_FILE")
|
|
fi
|
|
|
|
borg create --stats \
|
|
--list \
|
|
--filter=AMCE \
|
|
--files-cache=ctime,size,inode \
|
|
--compression=zstd,12 \
|
|
"${EXCLUDE_ARGS[@]}" ::"{hostname}-{now:%Y-%m-%dT%H:%M:%S}" .
|
|
|
|
# Clean up temporary exclude file
|
|
if [ -n "$GIT_EXCLUDE_FILE" ] && [ -f "$GIT_EXCLUDE_FILE" ]; then
|
|
rm -f "$GIT_EXCLUDE_FILE"
|
|
fi
|
|
|
|
cd -
|
|
|
|
borg prune --list --stats \
|
|
--keep-daily="$KEEP_DAILY" \
|
|
--keep-weekly="$KEEP_WEEKLY" \
|
|
--keep-monthly="$KEEP_MONTHLY" \
|
|
--keep-yearly="$KEEP_YEARLY"
|
|
|
|
borg compact --threshold=5 --cleanup-commits --verbose --progress
|
|
|
|
btrfs subvolume delete /snapshot/btrfs-root
|
|
|