X-Git-Url: https://git.treefish.org/~alex/backmeupscotty.git/blobdiff_plain/5a7e954f6cac6da23598c140cea07f4cd7a91148..85ea4b7f90d54f48e0b3f0b7a71cd05983ed8e50:/backmeupscotty?ds=sidebyside diff --git a/backmeupscotty b/backmeupscotty index 3f68b1f..3ee85c9 100644 --- a/backmeupscotty +++ b/backmeupscotty @@ -18,21 +18,32 @@ function scottyerror { echo $(upperme): $@ >&2 } +function ssh255 { + ssh $@ + sshret=$? + + if [ $sshret -eq 255 ]; then + scottyerror "SSH connection failed!" + exit 1 + else + return $sshret + fi +} + function grepbackups { - ssh $REMOTE_HOST "ls $REMOTE_DIR" | grep -E '[0-9]+-[0-9]+' + ssh255 $REMOTE_HOST "ls $REMOTE_DIR" | grep -E '[0-9]+-[0-9]+' } function isIncomplete { - if ( ssh $REMOTE_HOST '[ -d '$REMOTE_DIR/incomplete' ]' ); then + if ( ssh255 $REMOTE_HOST '[ -d '$REMOTE_DIR/incomplete' ]' ); then return 0 else return 1 fi } -function isIncompleteOrNthDay { - if isIncomplete || \ - [ $(( ( $(date +%s) / (60*60*24) ) % $BACKUP_RUNEVERYNTHDAY )) -eq 0 ]; +function isNthDay { + if [ $(( ( $(date +%s) / (60*60*24) ) % $BACKUP_RUNEVERYNTHDAY )) -eq 0 ]; then return 0 else @@ -40,6 +51,20 @@ function isIncompleteOrNthDay { fi } +function latestTooOld { + for oldbackup in $(grepbackups); do + tstamp=$(echo $oldbackup | cut -d'-' -f1) + + if [ $(( $(date +%s) - $tstamp )) -lt \ + $(( ($BACKUP_RUNEVERYNTHDAY*24+12)*60*60 )) ] + then + return 1 + fi + done + + return 0 +} + function scottysync { timestamp=$(date +%s) @@ -65,9 +90,9 @@ function scottysync { rsync_exclude=$(eval echo --exclude={$SYNC_EXC} | tr -d {}) fi - if (ssh $REMOTE_HOST '[ ! -d '$REMOTE_DIR' ]'); then + if (ssh255 $REMOTE_HOST '[ ! -d '$REMOTE_DIR' ]'); then scottyinfo Creating destination directory $REMOTE_HOST:$REMOTE_DIR - ssh $REMOTE_HOST "mkdir $REMOTE_DIR" + ssh255 $REMOTE_HOST "mkdir $REMOTE_DIR" fi if isIncomplete; then @@ -83,7 +108,7 @@ function scottysync { if [ $? -eq 0 ]; then scottyinfo Timestamping completed backup and linking to current backup - ssh $REMOTE_HOST \ + ssh255 $REMOTE_HOST \ "mv $dir_incomplete $dir_timestamped && rm -f $dir_current && ln -s $(basename $dir_timestamped) $dir_current" fi @@ -93,7 +118,7 @@ function scottysync { if [ $oldestbackuptstamp -lt $(( $(date +%s) - $ARCHIVE_KEEPNDAYS*60*60*24 )) ]; then scottyinfo Removing old backup $oldestbackup - ssh $REMOTE_HOST rm -r "$REMOTE_DIR/$oldestbackup" + ssh255 $REMOTE_HOST rm -r "$REMOTE_DIR/$oldestbackup" else break fi @@ -165,11 +190,19 @@ function backmeupscotty { esac done - if ! isIncompleteOrNthDay; then - scottyinfo "This is not the nth day and no incomplete backup exists." + ssh255 $REMOTE_HOST exit + + if latestTooOld; then + scottyerror "The latest backup is too old." + elif isNthDay; then + scottyinfo "This is the nth day." + else + scottyinfo "No backup has to be done. Exiting." exit 0 fi + scottyinfo "Performing backup." + trap cleanup_abort EXIT prepare