123 lines
3.1 KiB
Bash
123 lines
3.1 KiB
Bash
#!/bin/bash
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# Copyright (c) 2022 Mr. Gecko's Media (James Coleman). http://mrgeckosmedia.com/
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# This is for backing up Rados Block Device (Ceph) storage.
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# A file to prevent overlapping runs.
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PIDFILE="/tmp/backup-image.pid"
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# If the pid file exists and process is running, exit.
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if [ -f "$PIDFILE" ]; then
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PID=$(cat "$PIDFILE")
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if ps -p "$PID" >/dev/null; then
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echo "Backup process already running, exiting."
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exit 1
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fi
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fi
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# Create a new pid file for this process.
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echo $BASHPID >"$PIDFILE"
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# The pool in Ceph that you would like to backup.
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POOL="libvirt"
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# Pull images in pull from rbd driver.
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IMAGES=$(rbd -p $POOL ls)
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# The borg repository we're backing up to.
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export BORG_REPO='/media/Storage/Backup/kvm'
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# If you have a passphrase for your repository,
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# set it here or you can use bash to retrieve it.
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# export BORG_PASSPHRASE=''
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# Set answers for automation.
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export BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK=yes
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export BORG_RELOCATED_REPO_ACCESS_IS_OK=yes
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export BORG_CHECK_I_KNOW_WHAT_I_AM_DOING=NO
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export BORG_DELETE_I_KNOW_WHAT_I_AM_DOING=NO
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# Set to empty string to disable pruning.
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PRUNE_OPTIONS="--keep-daily 7 --keep-weekly 4 --keep-monthly 6"
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# Failures should remove pid file and exit with status code 1.
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fail() {
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echo "$1"
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rm "$PIDFILE"
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exit 1
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}
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for IMAGE in $IMAGES; do
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# Export volume to borg backup.
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echo "Creating backup for $IMAGE"
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rbd export $POOL/$IMAGE - | pv | borg create \
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--verbose \
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--stats \
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--show-rc \
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"::$IMAGE-{now}" -
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if [ $? -ne 0 ]; then
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fail "Failed to backup $IMAGE"
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fi
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# Prune if options are configured.
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if [ -n "$PRUNE_OPTIONS" ]; then
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echo "Pruning backups for $IMAGE"
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borg prune --list \
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--show-rc \
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--glob-archives "$IMAGE-*" \
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$PRUNE_OPTIONS
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if [ $? -ne 0 ]; then
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fail "Failed to prune $DOMAIN"
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fi
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fi
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done
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# I save the status in a temporary file so I can error out and exit if a failure occurs.
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DOMLIST_STATUS_TMP="/tmp/backup-rbd-domlist-tmp"
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while read -r line; do
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# Extract the domain name from the line.
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DOMAIN=$(echo $line | awk '{print $2}')
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# Backup the domain info.
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echo "Backing up $DOMAIN xml"
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virsh dumpxml "$DOMAIN" | borg create \
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--verbose \
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--stats \
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--show-rc \
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"::$DOMAIN-xml-{now}" -
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if [ $? -ne 0 ]; then
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fail "Failed to backup $DOMAIN"
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fi
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# Prune if options are configured.
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if [ -n "$PRUNE_OPTIONS" ]; then
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echo "Pruning backups for $IMAGE"
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borg prune --list \
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--show-rc \
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--glob-archives "$DOMAIN-xml-*" \
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$PRUNE_OPTIONS
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if [ $? -ne 0 ]; then
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fail "Failed to prune $DOMAIN"
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fi
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fi
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done < <(
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virsh list --all | tail -n +3
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echo $? >$DOMLIST_STATUS_TMP
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)
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# Get status from the domain listing.
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status=1
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if [ -f $DOMLIST_STATUS_TMP ]; then
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status=$(cat $DOMLIST_STATUS_TMP)
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rm $DOMLIST_STATUS_TMP
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fi
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# If status has an error, exit.
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if [ $status -ne 0 ]; then
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fail "Domain listing failed"
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fi
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# Shrink repo.
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borg compact
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rm "$PIDFILE"
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