# to a remote server. It is designed to be run with low overhead
# in terms of cpu and bandwidth so it runs pretty slow.
# Hardlinking is used to save storage space.
-#
+#
# This handler expects that your maildir directory structure is
# either one of the following:
-#
-# 1. /$srcdir/[a-zA-Z0-9]/$user for example:
+#
+# 1. /$srcdir/[a-zA-Z0-9]/$user for example:
# /var/maildir/a/anarchist
# /var/maildir/a/arthur
# ...
# /var/maildir/Z/Zaphod
# /var/maildir/Z/Zebra
-#
+#
# 2. or the following:
# /var/maildir/domain.org/user1
# /var/maildir/domain.org/user2
# /var/maildir/anotherdomain.org/user2
# ...
#
-# if the configuration is setup to have keepdaily at 3,
+# if the configuration is setup to have keepdaily at 3,
# keepweekly is 2, and keepmonthly is 1, then each user's
# maildir backup snapshot directory will contain these files:
# daily.1
# We handle each maildir individually because it becomes very
# unweldy to hardlink and rsync many hundreds of thousands
# of files at once. It is much faster to take on smaller
-# chunks at a time.
+# chunks at a time.
#
-# For the backup rotation to work, destuser must be able to run
+# For the backup rotation to work, destuser must be able to run
# arbitrary bash commands on the desthost.
#
# Any maildir which is deleted from the source will be moved to
-# "deleted" directory in the destination. It is up to you to
+# "deleted" directory in the destination. It is up to you to
# periodically remove this directory or old maildirs in it.
-#
+#
##############################################################
getconf rotate yes
### FUNCTIONS
function do_user() {
- local user=$1
- local btype=$2
- local userdir=${3%/}
- local source="$srcdir/$userdir/$user/"
- local target="$destdir/$userdir/$user/$btype.1"
- if [ ! -d $source ]; then
- warning "maildir $source not found"
- return
- fi
-
- debug "syncing"
- ret=`$RSYNC -e "ssh -p $destport -i $destid_file" -r \
- --links --ignore-existing --delete --size-only --bwlimit=$speedlimit \
- --exclude '.Trash/*' --exclude '.Mistakes/*' --exclude '.Spam/*' \
- $source $destuser@$desthost:$target \
- 2>&1`
- ret=$?
- # ignore 0 (success) and 24 (file vanished before it could be copied)
- if [ $ret != 0 -a $ret != 24 ]; then
- warning "rsync $user failed"
- warning " returned: $ret"
- let "failedcount = failedcount + 1"
- if [ $failedcount -gt 100 ]; then
- fatal "100 rsync errors -- something is not working right. bailing out."
- fi
- fi
- ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file "date +%c%n%s > $target/created"
+ local user=$1
+ local btype=$2
+ local userdir=${3%/}
+ local source="$srcdir/$userdir/$user/"
+ local target="$destdir/$userdir/$user/$btype.1"
+ if [ ! -d $source ]; then
+ warning "maildir $source not found"
+ return
+ fi
+
+ debug "syncing"
+ ret=`$RSYNC -e "ssh -p $destport -i $destid_file" -r \
+ --links --ignore-existing --delete --size-only --bwlimit=$speedlimit \
+ --exclude '.Trash/*' --exclude '.Mistakes/*' --exclude '.Spam/*' \
+ $source $destuser@$desthost:$target \
+ 2>&1`
+ ret=$?
+ # ignore 0 (success) and 24 (file vanished before it could be copied)
+ if [ $ret != 0 -a $ret != 24 ]; then
+ warning "rsync $user failed"
+ warning " returned: $ret"
+ let "failedcount = failedcount + 1"
+ if [ $failedcount -gt 100 ]; then
+ fatal "100 rsync errors -- something is not working right. bailing out."
+ fi
+ fi
+ ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file "date +%c%n%s > $target/created"
}
# remove any maildirs from backup which might have been deleted
# (actually, it just moved them to the directory "deleted")
function do_remove() {
- local tmp1=`maketemp maildir-tmp-file`
- local tmp2=`maketemp maildir-tmp-file`
-
- ssh -p $destport -i $destid_file $destuser@$desthost mkdir -p "$destdir/deleted"
- cd "$srcdir"
- for userdir in `ls -d1 */`; do
- ls -1 "$srcdir/$userdir" | sort > $tmp1
- ssh -p $destport -i $destid_file $destuser@$desthost ls -1 "$destdir/$userdir" | sort > $tmp2
- for deluser in `join -v 2 $tmp1 $tmp2`; do
- [ "$deluser" != "" ] || continue
- info "removing $destuser@$desthost:$destdir/$userdir$deluser/"
- ssh -p $destport -i $destid_file $destuser@$desthost mv "$destdir/$userdir$deluser/" "$destdir/deleted"
- ssh -p $destport -i $destid_file $destuser@$desthost "date +%c%n%s > '$destdir/deleted/$deluser/deleted_on'"
- done
- done
- rm $tmp1
- rm $tmp2
+ local tmp1=`maketemp maildir-tmp-file`
+ local tmp2=`maketemp maildir-tmp-file`
+
+ ssh -p $destport -i $destid_file $destuser@$desthost mkdir -p "$destdir/deleted"
+ cd "$srcdir"
+ for userdir in `ls -d1 */`; do
+ ls -1 "$srcdir/$userdir" | sort > $tmp1
+ ssh -p $destport -i $destid_file $destuser@$desthost ls -1 "$destdir/$userdir" | sort > $tmp2
+ for deluser in `join -v 2 $tmp1 $tmp2`; do
+ [ "$deluser" != "" ] || continue
+ info "removing $destuser@$desthost:$destdir/$userdir$deluser/"
+ ssh -p $destport -i $destid_file $destuser@$desthost mv "$destdir/$userdir$deluser/" "$destdir/deleted"
+ ssh -p $destport -i $destid_file $destuser@$desthost "date +%c%n%s > '$destdir/deleted/$deluser/deleted_on'"
+ done
+ done
+ rm $tmp1
+ rm $tmp2
}
function do_rotate() {
- [ "$rotate" == "yes" ] || return;
- local user=$1
- local userdir=${2%/}
- local backuproot="$destdir/$userdir/$user"
+ [ "$rotate" == "yes" ] || return;
+ local user=$1
+ local userdir=${2%/}
+ local backuproot="$destdir/$userdir/$user"
(
- ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF
+ ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF
##### BEGIN REMOTE SCRIPT #####
- seconds_daily=86400
- seconds_weekly=604800
- seconds_monthly=2628000
- keepdaily=$keepdaily
- keepweekly=$keepweekly
- keepmonthly=$keepmonthly
- now=\`date +%s\`
-
- if [ ! -d "$backuproot" ]; then
- echo "Debug: skipping rotate of $user. $backuproot doesn't exist."
- exit
- fi
- for rottype in daily weekly monthly; do
- seconds=\$((seconds_\${rottype}))
-
- dir="$backuproot/\$rottype"
- if [ ! -d \$dir.1 ]; then
- echo "Debug: \$dir.1 does not exist, skipping."
- continue 1
- elif [ ! -f \$dir.1/created ]; then
- echo "Warning: \$dir.1/created does not exist. This backup may be only partially completed. Skipping rotation."
- continue 1
- fi
-
- # Rotate the current list of backups, if we can.
- oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\`
- #echo "Debug: oldest \$oldest"
- [ "\$oldest" == "" ] && oldest=0
- for (( i=\$oldest; i > 0; i-- )); do
- if [ -d \$dir.\$i ]; then
- if [ -f \$dir.\$i/created ]; then
- created=\`tail -1 \$dir.\$i/created\`
- else
- created=0
- fi
- cutoff_time=\$(( now - (seconds*(i-1)) ))
- if [ ! \$created -gt \$cutoff_time ]; then
- next=\$(( i + 1 ))
- if [ ! -d \$dir.\$next ]; then
- echo "Debug: \$rottype.\$i --> \$rottype.\$next"
- mv \$dir.\$i \$dir.\$next
- date +%c%n%s > \$dir.\$next/rotated
- else
- echo "Debug: skipping rotation of \$dir.\$i because \$dir.\$next already exists."
- fi
- else
- echo "Debug: skipping rotation of \$dir.\$i because it was created" \$(( (now-created)/86400)) "days ago ("\$(( (now-cutoff_time)/86400))" needed)."
- fi
- fi
- done
- done
-
- max=\$((keepdaily+1))
- if [ \( \$keepweekly -gt 0 -a -d $backuproot/daily.\$max \) -a ! -d $backuproot/weekly.1 ]; then
- echo "Debug: daily.\$max --> weekly.1"
- mv $backuproot/daily.\$max $backuproot/weekly.1
- date +%c%n%s > $backuproot/weekly.1/rotated
- fi
-
- max=\$((keepweekly+1))
- if [ \( \$keepmonthly -gt 0 -a -d $backuproot/weekly.\$max \) -a ! -d $backuproot/monthly.1 ]; then
- echo "Debug: weekly.\$max --> monthly.1"
- mv $backuproot/weekly.\$max $backuproot/monthly.1
- date +%c%n%s > $backuproot/monthly.1/rotated
- fi
-
- for rottype in daily weekly monthly; do
- max=\$((keep\${rottype}+1))
- dir="$backuproot/\$rottype"
- oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\`
- [ "\$oldest" == "" ] && oldest=0
- # if we've rotated the last backup off the stack, remove it.
- for (( i=\$oldest; i >= \$max; i-- )); do
- if [ -d \$dir.\$i ]; then
- if [ -d $backuproot/rotate.tmp ]; then
- echo "Debug: removing rotate.tmp"
- rm -rf $backuproot/rotate.tmp
- fi
- echo "Debug: moving \$rottype.\$i to rotate.tmp"
- mv \$dir.\$i $backuproot/rotate.tmp
- fi
- done
- done
+ seconds_daily=86400
+ seconds_weekly=604800
+ seconds_monthly=2628000
+ keepdaily=$keepdaily
+ keepweekly=$keepweekly
+ keepmonthly=$keepmonthly
+ now=\`date +%s\`
+
+ if [ ! -d "$backuproot" ]; then
+ echo "Debug: skipping rotate of $user. $backuproot doesn't exist."
+ exit
+ fi
+ for rottype in daily weekly monthly; do
+ seconds=\$((seconds_\${rottype}))
+
+ dir="$backuproot/\$rottype"
+ if [ ! -d \$dir.1 ]; then
+ echo "Debug: \$dir.1 does not exist, skipping."
+ continue 1
+ elif [ ! -f \$dir.1/created ]; then
+ echo "Warning: \$dir.1/created does not exist. This backup may be only partially completed. Skipping rotation."
+ continue 1
+ fi
+
+ # Rotate the current list of backups, if we can.
+ oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\`
+ #echo "Debug: oldest \$oldest"
+ [ "\$oldest" == "" ] && oldest=0
+ for (( i=\$oldest; i > 0; i-- )); do
+ if [ -d \$dir.\$i ]; then
+ if [ -f \$dir.\$i/created ]; then
+ created=\`tail -1 \$dir.\$i/created\`
+ else
+ created=0
+ fi
+ cutoff_time=\$(( now - (seconds*(i-1)) ))
+ if [ ! \$created -gt \$cutoff_time ]; then
+ next=\$(( i + 1 ))
+ if [ ! -d \$dir.\$next ]; then
+ echo "Debug: \$rottype.\$i --> \$rottype.\$next"
+ mv \$dir.\$i \$dir.\$next
+ date +%c%n%s > \$dir.\$next/rotated
+ else
+ echo "Debug: skipping rotation of \$dir.\$i because \$dir.\$next already exists."
+ fi
+ else
+ echo "Debug: skipping rotation of \$dir.\$i because it was created" \$(( (now-created)/86400)) "days ago ("\$(( (now-cutoff_time)/86400))" needed)."
+ fi
+ fi
+ done
+ done
+
+ max=\$((keepdaily+1))
+ if [ \( \$keepweekly -gt 0 -a -d $backuproot/daily.\$max \) -a ! -d $backuproot/weekly.1 ]; then
+ echo "Debug: daily.\$max --> weekly.1"
+ mv $backuproot/daily.\$max $backuproot/weekly.1
+ date +%c%n%s > $backuproot/weekly.1/rotated
+ fi
+
+ max=\$((keepweekly+1))
+ if [ \( \$keepmonthly -gt 0 -a -d $backuproot/weekly.\$max \) -a ! -d $backuproot/monthly.1 ]; then
+ echo "Debug: weekly.\$max --> monthly.1"
+ mv $backuproot/weekly.\$max $backuproot/monthly.1
+ date +%c%n%s > $backuproot/monthly.1/rotated
+ fi
+
+ for rottype in daily weekly monthly; do
+ max=\$((keep\${rottype}+1))
+ dir="$backuproot/\$rottype"
+ oldest=\`find $backuproot -maxdepth 1 -type d -name \$rottype'.*' | @SED@ 's/^.*\.//' | sort -n | tail -1\`
+ [ "\$oldest" == "" ] && oldest=0
+ # if we've rotated the last backup off the stack, remove it.
+ for (( i=\$oldest; i >= \$max; i-- )); do
+ if [ -d \$dir.\$i ]; then
+ if [ -d $backuproot/rotate.tmp ]; then
+ echo "Debug: removing rotate.tmp"
+ rm -rf $backuproot/rotate.tmp
+ fi
+ echo "Debug: moving \$rottype.\$i to rotate.tmp"
+ mv \$dir.\$i $backuproot/rotate.tmp
+ fi
+ done
+ done
####### END REMOTE SCRIPT #######
EOF
) | (while read a; do passthru $a; done)
function setup_remote_dirs() {
- local user=$1
- local backuptype=$2
- local userdir=${3%/}
- local dir="$destdir/$userdir/$user/$backuptype"
- local tmpdir="$destdir/$userdir/$user/rotate.tmp"
+ local user=$1
+ local backuptype=$2
+ local userdir=${3%/}
+ local dir="$destdir/$userdir/$user/$backuptype"
+ local tmpdir="$destdir/$userdir/$user/rotate.tmp"
(
- ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF
- if [ ! -d $destdir ]; then
- echo "Fatal: Destination directory $destdir does not exist on host $desthost."
- exit 1
- elif [ -d $dir.1 ]; then
- if [ -f $dir.1/created ]; then
- echo "Warning: $dir.1 already exists. Overwriting contents."
- else
- echo "Warning: we seem to be resuming a partially written $dir.1"
- fi
- else
- if [ -d $tmpdir ]; then
- mv $tmpdir $dir.1
- if [ \$? == 1 ]; then
- echo "Fatal: could mv $destdir/rotate.tmp $dir.1 on host $desthost"
- exit 1
- fi
- else
- mkdir --parents $dir.1
- if [ \$? == 1 ]; then
- echo "Fatal: could not create directory $dir.1 on host $desthost"
- exit 1
- fi
- fi
- if [ -d $dir.2 ]; then
- echo "Debug: update links $backuptype.2 --> $backuptype.1"
- cp -alf $dir.2/. $dir.1
- #if [ \$? == 1 ]; then
- # echo "Fatal: could not create hard links to $dir.1 on host $desthost"
- # exit 1
- #fi
- fi
- fi
- [ -f $dir.1/created ] && rm $dir.1/created
- [ -f $dir.1/rotated ] && rm $dir.1/rotated
- exit 0
+ ssh -T -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file <<EOF
+ if [ ! -d $destdir ]; then
+ echo "Fatal: Destination directory $destdir does not exist on host $desthost."
+ exit 1
+ elif [ -d $dir.1 ]; then
+ if [ -f $dir.1/created ]; then
+ echo "Warning: $dir.1 already exists. Overwriting contents."
+ else
+ echo "Warning: we seem to be resuming a partially written $dir.1"
+ fi
+ else
+ if [ -d $tmpdir ]; then
+ mv $tmpdir $dir.1
+ if [ \$? == 1 ]; then
+ echo "Fatal: could mv $destdir/rotate.tmp $dir.1 on host $desthost"
+ exit 1
+ fi
+ else
+ mkdir --parents $dir.1
+ if [ \$? == 1 ]; then
+ echo "Fatal: could not create directory $dir.1 on host $desthost"
+ exit 1
+ fi
+ fi
+ if [ -d $dir.2 ]; then
+ echo "Debug: update links $backuptype.2 --> $backuptype.1"
+ cp -alf $dir.2/. $dir.1
+ #if [ \$? == 1 ]; then
+ # echo "Fatal: could not create hard links to $dir.1 on host $desthost"
+ # exit 1
+ #fi
+ fi
+ fi
+ [ -f $dir.1/created ] && rm $dir.1/created
+ [ -f $dir.1/rotated ] && rm $dir.1/rotated
+ exit 0
EOF
) | (while read a; do passthru $a; done)
- if [ $? == 1 ]; then exit; fi
+ if [ $? == 1 ]; then exit; fi
}
function start_mux() {
- if [ "$multiconnection" == "yes" ]; then
- debug "Starting dummy ssh connection"
- ssh -p $destport -i $destid_file $destuser@$desthost sleep 1d &
- sleep 1
- fi
+ if [ "$multiconnection" == "yes" ]; then
+ debug "Starting dummy ssh connection"
+ ssh -p $destport -i $destid_file $destuser@$desthost sleep 1d &
+ sleep 1
+ fi
}
function end_mux() {
- if [ "$multiconnection" == "yes" ]; then
- debug "Stopping dummy ssh connection"
- ssh -p $destport -i $destid_file $destuser@$desthost pkill sleep
- fi
+ if [ "$multiconnection" == "yes" ]; then
+ debug "Stopping dummy ssh connection"
+ ssh -p $destport -i $destid_file $destuser@$desthost pkill sleep
+ fi
}
###
# see if we can login
debug "ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file 'echo -n 1'"
if [ ! $test ]; then
- result=`ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file 'echo -n 1' 2>&1`
- if [ "$result" != "1" ]; then
- fatal "Can't connect to $desthost as $destuser using $destid_file."
- fi
+ result=`ssh -o PasswordAuthentication=no $desthost -l $destuser -i $destid_file 'echo -n 1' 2>&1`
+ if [ "$result" != "1" ]; then
+ fatal "Can't connect to $desthost as $destuser using $destid_file."
+ fi
fi
end_mux
## SANITY CHECKS ##
status=`ssh -p $destport -i $destid_file $destuser@$desthost "[ -d \"$destdir\" ] && echo 'ok'"`
if [ "$status" != "ok" ]; then
- end_mux
- fatal "Destination directory $destdir doesn't exist!"
- exit
+ end_mux
+ fatal "Destination directory $destdir doesn't exist!"
+ exit
fi
### REMOVE OLD MAILDIRS ###
if [ "$remove" == "yes" ]; then
- do_remove
+ do_remove
fi
### MAKE BACKUPS ###
if [ "$backup" == "yes" ]; then
- if [ $keepdaily -gt 0 ]; then btype=daily
- elif [ $keepweekly -gt 0 ]; then btype=weekly
- elif [ $keepmonthly -gt 0 ]; then btype=monthly
- else fatal "keeping no backups"; fi
-
- if [ "$testuser" != "" ]; then
- cd "$srcdir/${user:0:1}"
- do_rotate $testuser
- setup_remote_dirs $testuser $btype
- do_user $testuser $btype
- else
- [ -d "$srcdir" ] || fatal "directory $srcdir not found."
- cd "$srcdir"
- for userdir in `ls -d1 */`; do
- [ -d "$srcdir/$userdir" ] || fatal "directory $srcdir/$userdir not found."
- cd "$srcdir/$userdir"
- debug $userdir
- for user in `ls -1`; do
- [ "$user" != "" ] || continue
- debug "$user $userdir"
- do_rotate $user $userdir
- setup_remote_dirs $user $btype $userdir
- do_user $user $btype $userdir
- done
- done
- fi
+ if [ $keepdaily -gt 0 ]; then btype=daily
+ elif [ $keepweekly -gt 0 ]; then btype=weekly
+ elif [ $keepmonthly -gt 0 ]; then btype=monthly
+ else fatal "keeping no backups"; fi
+
+ if [ "$testuser" != "" ]; then
+ cd "$srcdir/${user:0:1}"
+ do_rotate $testuser
+ setup_remote_dirs $testuser $btype
+ do_user $testuser $btype
+ else
+ [ -d "$srcdir" ] || fatal "directory $srcdir not found."
+ cd "$srcdir"
+ for userdir in `ls -d1 */`; do
+ [ -d "$srcdir/$userdir" ] || fatal "directory $srcdir/$userdir not found."
+ cd "$srcdir/$userdir"
+ debug $userdir
+ for user in `ls -1`; do
+ [ "$user" != "" ] || continue
+ debug "$user $userdir"
+ do_rotate $user $userdir
+ setup_remote_dirs $user $btype $userdir
+ do_user $user $btype $userdir
+ done
+ done
+ fi
fi
end_mux
-
projects / matthijs / upstream / backupninja.git / blobdiff