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Adapted pull primary backups to hardlinks

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Kevin Veen-Birkenbach
2022-03-29 21:20:51 +02:00
parent f4b8e2b8dd
commit 0727b179a6
2 changed files with 25 additions and 16 deletions
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39
roles/native-pull-primary-backups/files/pull-remote-backup.sh
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@@ -11,26 +11,35 @@ directories="$(ssh "$source_host" find "$source_path" -maxdepth 1 -type d)" || e
for backup_type_dir in $directories; do
if [ "$backup_type_dir" != "$source_path" ]; then
# this folder is neccessary to make restricted rsync possible:
current_version="$backup_type_dir/versions/current/"
# this is the folder where the versions will be copied to:
diff_store="$backup_type_dir/versions/$(date '+%Y%m%d%H%M%S')/"
# this is the folder which contains the actual backup:
latest_path="$backup_type_dir/latest/"
# folder which contains versions
versions_dir="$backup_type_dir/versions/"
# link name of last backup
latest_version_link="$backup_type_dir/latest"
# this folder contains the last backup
latest_version_dir="$versions_dir$(date '+%Y%m%d%H%M%S')/"
# this is the link name of the previous version
previous_version_link="$backup_type_dir/previous"
# source path of the backup files:
remote_source_path="$source_host:$latest_path"
# file in which the logs will be saved:
log_path="$backup_type_dir/log.txt"
remote_source_path="$source_host:$latest_version_link/"
#identifiy previous version
versions=( $(basename -a "$versions_dir"*/ | sort) )|| exit 1
last_version="${versions[-1]}" || exit 1
previous_version_dir="$versions_dir$last_version/"
# create working folders:
mkdir -vp "$latest_path"
mkdir -vp "$diff_store"
rm -vr "$current_version"
mkdir -vp "$current_version"
mkdir -vp "$latest_version_dir"
# delete links
rm -v "$latest_version_link"
rm -v "$previous_version_link"
# create links
ln -vs "$latest_version_dir" "$latest_version_link" || exit 1
ln -vs "$previous_version_dir" "$previous_version_link"|| exit 1
# do backup:
rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --log-file="$log_path" --backup-dir="$current_version" "$remote_source_path" "$latest_path" || ((errors+=1));
mv -v "$current_version"* "$diff_store"
rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --link-dest="$previous_version_link" "$remote_source_path" "$latest_version_link" || ((errors+=1));
fi
done
exit $errors;