From: FSF BOFH Date: Tue, 26 Jul 2011 23:07:46 +0000 (-0400) Subject: Abort on low disk space X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=36920c02b847daf4fce6fec0ea5682abb1fbde27;p=wizbackup.git Abort on low disk space --- diff --git a/wizbackup b/wizbackup index f857379..816a66b 100755 --- a/wizbackup +++ b/wizbackup @@ -20,7 +20,6 @@ # along with this program. If not, see . # - if [ $# -lt 2 ]; then echo "Usage: $0 SOURCE DEST [RSYNC_OPTS]" exit 1 @@ -33,10 +32,10 @@ set -u # CONFIGURATION ##################################################################### -# Source path +# Source rsync URL SRC=$1; shift -# DESTINATION DIRECTORY (must exists) +# Destination directory (will be created if it doesn't exist) DEST=$1; shift # NOTE: --timeout needs to be large enough: if a large dir tree don't change a lot of time can pass without I/O @@ -46,6 +45,9 @@ RSYNC_OPTS="-HAXa --stats --timeout 1800 --numeric-ids --delete --delete-exclude # Number of saved snapshots SNAPSHOTS=45 +# Abort backup if the destination volume has less than these GBs free +MIN_FREE_GB=10 + RESULT=500 DATE=`date +"%Y%m%d"` DEST="`echo $DEST | sed -e 's/\/$//'`" @@ -125,7 +127,7 @@ do_link() echo "$(date): Linking snapshot $DEST/$newest to $DEST/tmp" # TODO: Creating the hardlinks takes a lot of time. # Perhaps we could save time by recycling the oldest snapshot - cp -lR "$DEST/$newest" "$DEST/tmp" + cp -la "$DEST/$newest" "$DEST/tmp" RESULT=$? if [ $RESULT -ne 0 ]; then echo "$(date): Failed to setup tmp snapshot: $RESULT. Cleaning up." @@ -138,6 +140,15 @@ do_link() do_test() { # TODO: test for free space and free inodes in the $DEST filesystem + block_size=`stat --file-system --format "%S" "$DEST"` + free_blocks=`stat --file-system --format "%f" "$DEST"` + free_inodes=`stat --file-system --format "%d" "$DEST"` + free_gb=$((block_size * free_blocks / 1024 / 1024 / 1024)) + + if [ "$free_gb" -lt "$MIN_FREE_GB" ]; then + echo "$(date): Aborting due to insufficient free space ${free_gb}GB." + exit 670 + fi # Avoid clobbering the latest snapshot if the remote host does # not allow us to connect @@ -150,9 +161,9 @@ do_test() fi } -###################### -# MAIN -###################### +###################################### +# Main +###################################### # make sure to be root if (( `id -u` != 0 )); then { echo "Sorry, must be root. Exiting..."; exit; } fi