Update backup script
This commit is contained in:
parent
f1ddb33939
commit
39b0c57266
2 changed files with 52 additions and 31 deletions
|
@ -1,5 +1,4 @@
|
|||
#!/usr/bin/env bash
|
||||
#!/bin/bash
|
||||
|
||||
# Check for required argument
|
||||
if [ $# -ne 1 ]; then
|
||||
|
@ -10,6 +9,7 @@ fi
|
|||
|
||||
# Configuration
|
||||
SNAPPER_CONFIG="$1"
|
||||
BACKUP_DESCRIPTION="btrfs-backup"
|
||||
|
||||
# Get the actual snapshot location from snapper config
|
||||
SOURCE_PATH=$(sudo snapper -c "$SNAPPER_CONFIG" get-config | grep '^SUBVOLUME' | cut -d'=' -f2 | tr -d '"'| awk {'print $3'})
|
||||
|
@ -26,17 +26,22 @@ if [ ! -d "$SNAPSHOT_PATH" ]; then
|
|||
exit 1
|
||||
fi
|
||||
|
||||
# Create new snapshot with backup description
|
||||
NEW_SNAPSHOT=$(sudo snapper -c "$SNAPPER_CONFIG" create --description "$BACKUP_DESCRIPTION" --print-number)
|
||||
if [ -z "$NEW_SNAPSHOT" ]; then
|
||||
echo "ERROR: Failed to create new snapshot"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# Get latest snapshot number from snapper
|
||||
LATEST_SNAPSHOT=$(sudo snapper -c "$SNAPPER_CONFIG" list | tail -n 1 | awk '{print $1}')
|
||||
HOSTNME=$(hostname)
|
||||
REMOTE_HOST="root@synology"
|
||||
BASE_DEST_PATH="/volume1/BTRFS_Receives/`hostname`/${SNAPPER_CONFIG}"
|
||||
DEST_PATH="/volume1/BTRFS_Receives/`hostname`/${SNAPPER_CONFIG}/${LATEST_SNAPSHOT}"
|
||||
DEST_PATH="/volume1/BTRFS_Receives/`hostname`/${SNAPPER_CONFIG}/${NEW_SNAPSHOT}"
|
||||
STATE_FILE="/var/lib/snapper-backup-${SNAPPER_CONFIG}.state"
|
||||
LOG_FILE="/var/log/snapper-backup-${SNAPPER_CONFIG}.log"
|
||||
KEEP_SNAPSHOTS=5
|
||||
# Get latest successful transfer number
|
||||
|
||||
# Get latest successful transfer number from snapshots with backup description
|
||||
LAST_TRANSFERRED=$(cat "$STATE_FILE" 2>/dev/null || echo "")
|
||||
|
||||
# Ensure we exit on any error
|
||||
|
@ -73,24 +78,40 @@ verify_remote() {
|
|||
|
||||
# Function to get remote snapshots
|
||||
get_remote_snapshots() {
|
||||
ssh "$REMOTE_HOST" "find '$BASE_DEST_PATH' -maxdepth 2 -type d -name 'snapshot*' | sort -n"
|
||||
# ssh "$REMOTE_HOST" "btrfs subvolume list /volume1/ -t | grep $HOSTNAME | grep $SNAPPER_CONFIG"
|
||||
ssh "$REMOTE_HOST" "find '$BASE_DEST_PATH' -maxdepth 1 -type d -name '[0-9]*' | sort -n"
|
||||
}
|
||||
|
||||
# Function to cleanup old remote snapshots
|
||||
cleanup_remote_snapshots() {
|
||||
local snapshots=($(get_remote_snapshots))
|
||||
local count=${#snapshots[@]}
|
||||
# Function to get local backup snapshots
|
||||
get_local_snapshots() {
|
||||
sudo snapper -c "$SNAPPER_CONFIG" list | grep "$BACKUP_DESCRIPTION" | awk '{print $1}' | sort -n
|
||||
}
|
||||
|
||||
# Function to cleanup old snapshots both locally and remotely
|
||||
cleanup_snapshots() {
|
||||
local local_snapshots=($(get_local_snapshots))
|
||||
local remote_snapshots=($(get_remote_snapshots))
|
||||
local count=${#local_snapshots[@]}
|
||||
|
||||
if [ $count -gt $KEEP_SNAPSHOTS ]; then
|
||||
local to_delete=$((count - KEEP_SNAPSHOTS))
|
||||
log "Cleaning up $to_delete old snapshots on remote system"
|
||||
log "Cleaning up $to_delete old snapshots both locally and remotely"
|
||||
|
||||
for ((i=0; i<$to_delete; i++)); do
|
||||
local snapshot="${snapshots[$i]}"
|
||||
log "Deleting remote snapshot: $snapshot"
|
||||
ssh "$REMOTE_HOST" "btrfs subvolume delete '$snapshot'" || \
|
||||
log "WARNING: Failed to delete snapshot $snapshot"
|
||||
local snapshot="${local_snapshots[$i]}"
|
||||
|
||||
# Delete remote snapshot first
|
||||
if ssh "$REMOTE_HOST" "[ -d '$BASE_DEST_PATH/$snapshot' ]"; then
|
||||
log "Deleting remote snapshot: $snapshot"
|
||||
ssh "$REMOTE_HOST" "btrfs subvolume delete '$BASE_DEST_PATH/$snapshot/snapshot'" || \
|
||||
log "WARNING: Failed to delete remote snapshot $snapshot"
|
||||
ssh "$REMOTE_HOST" "rm -rf '$BASE_DEST_PATH/$snapshot'" || \
|
||||
log "WARNING: Failed to cleanup remote snapshot directory $snapshot"
|
||||
fi
|
||||
|
||||
# Then delete local snapshot
|
||||
log "Deleting local snapshot: $snapshot"
|
||||
sudo snapper -c "$SNAPPER_CONFIG" delete "$snapshot" || \
|
||||
log "WARNING: Failed to delete local snapshot $snapshot"
|
||||
done
|
||||
fi
|
||||
}
|
||||
|
@ -98,60 +119,60 @@ cleanup_remote_snapshots() {
|
|||
# Start backup process
|
||||
log "Starting backup for snapper config: $SNAPPER_CONFIG"
|
||||
log "Using snapshot path: $SNAPSHOT_PATH"
|
||||
log "Created new snapshot: $NEW_SNAPSHOT"
|
||||
|
||||
# Verify remote connectivity first
|
||||
verify_remote
|
||||
|
||||
# Verify snapshots exist
|
||||
verify_snapshot "$LATEST_SNAPSHOT" || exit 1
|
||||
verify_snapshot "$NEW_SNAPSHOT" || exit 1
|
||||
if [ -n "$LAST_TRANSFERRED" ]; then
|
||||
verify_snapshot "$LAST_TRANSFERRED" || exit 1
|
||||
fi
|
||||
|
||||
# Exit if no new snapshots to transfer
|
||||
if [ "$LAST_TRANSFERRED" = "$LATEST_SNAPSHOT" ]; then
|
||||
log "No new snapshots to transfer"
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# Create destination directory if it doesn't exist
|
||||
ssh "$REMOTE_HOST" "mkdir -p '$DEST_PATH'"
|
||||
|
||||
# Perform the transfer
|
||||
if [ -z "$LAST_TRANSFERRED" ]; then
|
||||
# First time backup - full send
|
||||
log "Performing full send of snapshot $LATEST_SNAPSHOT"
|
||||
sudo btrfs send "$SNAPSHOT_PATH/$LATEST_SNAPSHOT/snapshot" | \
|
||||
log "Performing full send of snapshot $NEW_SNAPSHOT"
|
||||
sudo btrfs send "$SNAPSHOT_PATH/$NEW_SNAPSHOT/snapshot" | \
|
||||
pv --bytes | \
|
||||
ssh "$REMOTE_HOST" "btrfs receive '$DEST_PATH'" && {
|
||||
sudo echo "$LATEST_SNAPSHOT" | sudo tee "$STATE_FILE"
|
||||
echo "$NEW_SNAPSHOT" | sudo tee "$STATE_FILE"
|
||||
log "Full send completed successfully"
|
||||
} || {
|
||||
log "ERROR: Full send failed"
|
||||
sudo snapper -c "$SNAPPER_CONFIG" delete "$NEW_SNAPSHOT"
|
||||
exit 1
|
||||
}
|
||||
else
|
||||
# Incremental send
|
||||
log "Performing incremental send from $LAST_TRANSFERRED to $LATEST_SNAPSHOT"
|
||||
log "Performing incremental send from $LAST_TRANSFERRED to $NEW_SNAPSHOT"
|
||||
sudo btrfs send -p "$SNAPSHOT_PATH/$LAST_TRANSFERRED/snapshot" \
|
||||
"$SNAPSHOT_PATH/$LATEST_SNAPSHOT/snapshot" | \
|
||||
"$SNAPSHOT_PATH/$NEW_SNAPSHOT/snapshot" | \
|
||||
pv --bytes | \
|
||||
ssh "$REMOTE_HOST" "btrfs receive '$DEST_PATH'" && {
|
||||
sudo echo "$LATEST_SNAPSHOT" | sudo tee "$STATE_FILE"
|
||||
echo "$NEW_SNAPSHOT" | sudo tee "$STATE_FILE"
|
||||
log "Incremental send completed successfully"
|
||||
} || {
|
||||
log "ERROR: Incremental send failed"
|
||||
sudo snapper -c "$SNAPPER_CONFIG" delete "$NEW_SNAPSHOT"
|
||||
exit 1
|
||||
}
|
||||
fi
|
||||
|
||||
# Cleanup old snapshots if transfer was successful
|
||||
cleanup_remote_snapshots
|
||||
cleanup_snapshots
|
||||
|
||||
# Verify remote snapshots
|
||||
log "Current remote snapshots:"
|
||||
get_remote_snapshots | sudo tee -a "$LOG_FILE"
|
||||
|
||||
log "Current local snapshots:"
|
||||
get_local_snapshots | sudo tee -a "$LOG_FILE"
|
||||
|
||||
# Final verification
|
||||
if ! ssh "$REMOTE_HOST" "btrfs subvolume show '$DEST_PATH/snapshot'" &>/dev/null; then
|
||||
log "WARNING: Final verification failed"
|
||||
|
|
|
@ -1 +1 @@
|
|||
Subproject commit 8ed82c9afaac6359cf4603196f7a5bd4b399a4b5
|
||||
Subproject commit 26552d8bade6fa39188ebf68e9ffa1a8dcd75108
|
Loading…
Reference in a new issue