#!/usr/bin/env bash PROGRAM="Osync" # Rsync based two way sync engine with fault tolerance AUTHOR="(L) 2013-2015 by Orsiris \"Ozy\" de Jong" CONTACT="http://www.netpower.fr/osync - ozy@netpower.fr" PROGRAM_VERSION=1.1-dev PROGRAM_BUILD=2015073101 ## type doesn't work on platforms other than linux (bash). If if doesn't work, always assume output is not a zero exitcode if ! type -p "$BASH" > /dev/null then echo "Please run this script only with bash shell. Tested on bash >= 3.2" exit 127 fi ## allow debugging from command line with preceding ocsync with DEBUG=yes if [ ! "$DEBUG" == "yes" ] then DEBUG=no SLEEP_TIME=.1 else SLEEP_TIME=3 fi SCRIPT_PID=$$ LOCAL_USER=$(whoami) LOCAL_HOST=$(hostname) ## Default log file until config file is loaded if [ -w /var/log ] then LOG_FILE=/var/log/osync.log else LOG_FILE=./osync.log fi ## Default directory where to store temporary run files if [ -w /tmp ] then RUN_DIR=/tmp elif [ -w /var/tmp ] then RUN_DIR=/var/tmp else RUN_DIR=. fi ## Working directory. Will keep current file states, backups and soft deleted files. OSYNC_DIR=".osync_workdir" ## Log a state message every $KEEP_LOGGING seconds. Should not be equal to soft or hard execution time so your log won't be unnecessary big. KEEP_LOGGING=1801 ## Correct output of sort command (language agnostic sorting) export LC_ALL=C ALERT_LOG_FILE=$RUN_DIR/osync_lastlog function Dummy { sleep .1 } function Log { if [ $sync_on_changes -eq 1 ] then prefix="$(date) - " else prefix="TIME: $SECONDS - " fi echo -e "$prefix$1" >> "$LOG_FILE" if [ $silent -eq 0 ] then echo -e "$prefix$1" fi } function LogError { Log "$1" error_alert=1 } function LogDebug { if [ "$DEBUG" == "yes" ] then Log "$1" fi } function TrapError { local JOB="$0" local LINE="$1" local CODE="${2:-1}" if [ $silent -eq 0 ] then echo -e " /!\ ERROR in ${JOB}: Near line ${LINE}, exit code ${CODE}" fi } function TrapStop { if [ $soft_stop -eq 0 ] then LogError " /!\ WARNING: Manual exit of osync is really not recommended. Sync will be in inconsistent state." LogError " /!\ WARNING: If you are sure, please hit CTRL+C another time to quit." soft_stop=1 return 1 fi if [ $soft_stop -eq 1 ] then LogError " /!\ WARNING: CTRL+C hit twice. Quitting osync. Please wait..." soft_stop=2 exit 1 fi } function TrapQuit { if [ $error_alert -ne 0 ] then if [ "$DEBUG" != "yes" ] then SendAlert else Log "Debug mode, no alert mail will be sent." fi UnlockDirectories CleanUp LogError "Osync finished with errors." exitcode=1 else UnlockDirectories CleanUp Log "Osync finished." exitcode=0 fi if ps -p $child_pid > /dev/null 2>&1 then kill -9 $child_pid fi if ps -p $sub_pid > /dev/null 2>&1 then kill -9 $sub_pid fi exit $exitcode } function Spinner { if [ $silent -eq 1 ] then return 1 fi case $toggle in 1) echo -n $1" \ " echo -ne "\r" toggle="2" ;; 2) echo -n $1" | " echo -ne "\r" toggle="3" ;; 3) echo -n $1" / " echo -ne "\r" toggle="4" ;; *) echo -n $1" - " echo -ne "\r" toggle="1" ;; esac } function EscapeSpaces { echo $(echo "$1" | sed 's/ /\\ /g') } function CleanUp { if [ "$DEBUG" != "yes" ] then rm -f $RUN_DIR/osync_*_$SCRIPT_PID fi } function SendAlert { if [ "$quick_sync" == "2" ] then Log "Current task is a quicksync task. Will not send any alert." return 0 fi eval "cat \"$LOG_FILE\" $COMPRESSION_PROGRAM > $ALERT_LOG_FILE" MAIL_ALERT_MSG=$MAIL_ALERT_MSG$'\n\n'$(tail -n 25 "$LOG_FILE") if type -p mutt > /dev/null 2>&1 then echo $MAIL_ALERT_MSG | $(type -p mutt) -x -s "Sync alert for $SYNC_ID" $DESTINATION_MAILS -a "$ALERT_LOG_FILE" if [ $? != 0 ] then Log "WARNING: Cannot send alert email via $(type -p mutt) !!!" else Log "Sent alert mail using mutt." fi elif type -p mail > /dev/null 2>&1 then echo $MAIL_ALERT_MSG | $(type -p mail) -a "$ALERT_LOG_FILE" -s "Sync alert for $SYNC_ID" $DESTINATION_MAILS if [ $? != 0 ] then Log "WARNING: Cannot send alert email via $(type -p mail) with attachments !!!" echo $MAIL_ALERT_MSG | $(type -p mail) -s "Sync alert for $SYNC_ID" $DESTINATION_MAILS if [ $? != 0 ] then Log "WARNING: Cannot send alert email via $(type -p mail) without attachments !!!" else Log "Sent alert mail using mail command without attachment." fi else Log "Sent alert mail using mail command." fi elif type -p sendemail > /dev/null 2>&1 then if [ "$SMTP_USER" != "" ] && [ "$SMTP_PASSWORD" != "" ] then $SMTP_OPTIONS="-xu $SMTP_USER -xp $SMTP_PASSWORD" else $SMTP_OPTIONS="" fi $(type -p sendemail) -f $SENDER_MAIL -t $DESTINATION_MAILS -u "Backup alert for $BACKUP_ID" -m "$MAIL_ALERT_MSG" -s $SMTP_SERVER $SMTP_OPTIONS > /dev/null 2>&1 if [ $? != 0 ] then Log "WARNING: Cannot send alert email via $(type -p sendemail) !!!" else Log "Sent alert mail using sendemail command without attachment." fi else Log "WARNING: Cannot send alert email (no mutt / mail present) !!!" return 1 fi if [ -f "$ALERT_LOG_FILE" ] then rm "$ALERT_LOG_FILE" fi } function LoadConfigFile { if [ ! -f "$1" ] then LogError "Cannot load configuration file [$1]. Sync cannot start." exit 1 elif [[ "$1" != *".conf" ]] then LogError "Wrong configuration file supplied [$1]. Sync cannot start." exit 1 else egrep '^#|^[^ ]*=[^;&]*' "$1" > "$RUN_DIR/osync_config_$SCRIPT_PID" source "$RUN_DIR/osync_config_$SCRIPT_PID" fi } function CheckEnvironment { if [ "$REMOTE_SYNC" == "yes" ] then if ! type -p ssh > /dev/null 2>&1 then LogError "ssh not present. Cannot start sync." return 1 fi fi if ! type -p rsync > /dev/null 2>&1 then LogError "rsync not present. Sync cannot start." return 1 fi } function GetLocalOS { LOCAL_OS_VAR=$(uname -spio 2>&1) if [ $? != 0 ] then LOCAL_OS_VAR=$(uname -v 2>&1) if [ $? != 0 ] then LOCAL_OS_VAR=($uname) fi fi case $LOCAL_OS_VAR in *"Linux"*) LOCAL_OS="Linux" ;; *"BSD"*) LOCAL_OS="BSD" ;; *"MINGW32"*) LOCAL_OS="msys" ;; *"Darwin"*) LOCAL_OS="MacOSX" ;; *) LogError "Running on >> $LOCAL_OS_VAR << not supported. Please report to the author." exit 1 ;; esac LogDebug "Local OS: [$LOCAL_OS_VAR]." } function GetRemoteOS { if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost eval "$SSH_CMD \"uname -spio\" > $RUN_DIR/osync_remote_os_$SCRIPT_PID 2>&1" & child_pid=$! WaitForTaskCompletion $child_pid 120 240 retval=$? if [ $retval != 0 ] then eval "$SSH_CMD \"uname -v\" > $RUN_DIR/osync_remote_os_$SCRIPT_PID 2>&1" & child_pid=$! WaitForTaskCompletion $child_pid 120 240 retval=$? if [ $retval != 0 ] then eval "$SSH_CMD \"uname\" > $RUN_DIR/osync_remote_os_$SCRIPT_PID 2>&1" & child_pid=$! WaitForTaskCompletion $child_pid 120 240 retval=$? if [ $retval != 0 ] then LogError "Cannot Get remote OS type." fi fi fi REMOTE_OS_VAR=$(cat $RUN_DIR/osync_remote_os_$SCRIPT_PID) case $REMOTE_OS_VAR in *"Linux"*) REMOTE_OS="Linux" ;; *"BSD"*) REMOTE_OS="BSD" ;; *"MINGW32"*) REMOTE_OS="msys" ;; *"Darwin"*) REMOTE_OS="MacOSX" ;; *"ssh"*|*"SSH"*) LogError "Cannot connect to remote system." exit 1 ;; *) LogError "Running on remote OS failed. Please report to the author if the OS is not supported." LogError "Remote OS said:\n$REMOTE_OS_VAR" exit 1 esac LogDebug "Remote OS: [$REMOTE_OS_VAR]." fi } # Waits for pid $1 to complete. Will log an alert if $2 seconds passed since current task execution unless $2 equals 0. # Will stop task and log alert if $3 seconds passed since current task execution unless $3 equals 0. function WaitForTaskCompletion { soft_alert=0 log_ttime=0 SECONDS_BEGIN=$SECONDS while eval "$PROCESS_TEST_CMD" > /dev/null do Spinner EXEC_TIME=$(($SECONDS - $SECONDS_BEGIN)) if [ $((($EXEC_TIME + 1) % $KEEP_LOGGING)) -eq 0 ] then if [ $log_ttime -ne $EXEC_TIME ] then log_ttime=$EXEC_TIME Log "Current task still running." fi fi if [ $EXEC_TIME -gt "$2" ] then if [ $soft_alert -eq 0 ] && [ "$2" != 0 ] then LogError "Max soft execution time exceeded for task." soft_alert=1 fi if [ $EXEC_TIME -gt "$3" ] && [ "$3" != 0 ] then LogError "Max hard execution time exceeded for task. Stopping task execution." kill -s SIGTERM $1 if [ $? == 0 ] then LogError "Task stopped succesfully" else LogError "Sending SIGTERM to proces failed. Trying the hard way." kill -9 $1 if [ $? != 0 ] then LogError "Could not stop task." fi fi return 1 fi fi sleep $SLEEP_TIME done wait $child_pid return $? } # Waits for pid $1 to complete. Will log an alert if $2 seconds passed since script start unless $2 equals 0. # Will stop task and log alert if $3 seconds passed since script start unless $3 equals 0. function WaitForCompletion { soft_alert=0 log_time=0 while eval "$PROCESS_TEST_CMD" > /dev/null do Spinner if [ $((($SECONDS + 1) % $KEEP_LOGGING)) -eq 0 ] then if [ $log_time -ne $EXEC_TIME ] then log_time=$EXEC_TIME Log "Current task still running." fi fi if [ $SECONDS -gt "$2" ] then if [ $soft_alert -eq 0 ] && [ "$2" != 0 ] then LogError "Max soft execution time exceeded for script." soft_alert=1 fi if [ $SECONDS -gt "$3" ] && [ "$3" != 0 ] then LogError "Max hard execution time exceeded for script. Stopping current task execution." kill -s SIGTERM $1 if [ $? == 0 ] then LogError "Task stopped succesfully" else LogError "Sending SIGTERM to proces failed. Trying the hard way." kill -9 $1 if [ $? != 0 ] then LogError "Could not stop task." fi fi return 1 fi fi sleep $SLEEP_TIME done wait $child_pid return $? } ## Runs local command $1 and waits for completition in $2 seconds function RunLocalCommand { if [ $dryrun -ne 0 ] then Log "Dryrun: Local command [$1] not run." return 1 fi Log "Running command [$1] on local host." eval "$1" > $RUN_DIR/osync_run_local_$SCRIPT_PID 2>&1 & child_pid=$! WaitForTaskCompletion $child_pid 0 $2 retval=$? if [ $retval -eq 0 ] then Log "Command succeded." else LogError "Command failed." fi if [ $verbose -eq 1 ] || [ $retval -ne 0 ] then Log "Command output:\n$(cat $RUN_DIR/osync_run_local_$SCRIPT_PID)" fi if [ "$STOP_ON_CMD_ERROR" == "yes" ] && [ $retval -ne 0 ] then exit 1 fi } ## Runs remote command $1 and waits for completition in $2 seconds function RunRemoteCommand { CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost if [ $dryrun -ne 0 ] then Log "Dryrun: Local command [$1] not run." return 1 fi Log "Running command [$1] on remote host." eval "$SSH_CMD \"$1\" > $RUN_DIR/osync_run_remote_$SCRIPT_PID 2>&1 &" child_pid=$! WaitForTaskCompletion $child_pid 0 $2 retval=$? if [ $retval -eq 0 ] then Log "Command succeded." else LogError "Command failed." fi if [ -f $RUN_DIR/osync_run_remote_$SCRIPT_PID ] && ([ $verbose -eq 1 ] || [ $retval -ne 0 ]) then Log "Command output:\n$(cat $RUN_DIR/osync_run_remote_$SCRIPT_PID)" fi if [ "$STOP_ON_CMD_ERROR" == "yes" ] && [ $retval -ne 0 ] then exit 1 fi } function RunBeforeHook { if [ "$LOCAL_RUN_BEFORE_CMD" != "" ] then RunLocalCommand "$LOCAL_RUN_BEFORE_CMD" $MAX_EXEC_TIME_PER_CMD_BEFORE fi if [ "$REMOTE_RUN_BEFORE_CMD" != "" ] then RunRemoteCommand "$REMOTE_RUN_BEFORE_CMD" $MAX_EXEC_TIME_PER_CMD_BEFORE fi } function RunAfterHook { if [ "$LOCAL_RUN_AFTER_CMD" != "" ] then RunLocalCommand "$LOCAL_RUN_AFTER_CMD" $MAX_EXEC_TIME_PER_CMD_AFTER fi if [ "$REMOTE_RUN_AFTER_CMD" != "" ] then RunRemoteCommand "$REMOTE_RUN_AFTER_CMD" $MAX_EXEC_TIME_PER_CMD_AFTER fi } function CheckConnectivityRemoteHost { if [ "$REMOTE_HOST_PING" != "no" ] && [ "$REMOTE_SYNC" != "no" ] then eval "$PING_CMD $REMOTE_HOST > /dev/null 2>&1" if [ $? != 0 ] then LogError "Cannot ping $REMOTE_HOST" exit 1 fi fi } function CheckConnectivity3rdPartyHosts { if [ "$REMOTE_3RD_PARTY_HOSTS" != "" ] then remote_3rd_party_success=0 OLD_IFS=$IFS IFS=$' \t\n' for i in $REMOTE_3RD_PARTY_HOSTS do eval "$PING_CMD $i > /dev/null 2>&1" if [ $? != 0 ] then Log "Cannot ping 3rd party host $i" else remote_3rd_party_success=1 fi done IFS=$OLD_IFS if [ $remote_3rd_party_success -ne 1 ] then LogError "No remote 3rd party host responded to ping. No internet ?" exit 1 fi fi } ############################################################################################ ### realpath.sh implementation from https://github.com/mkropat/sh-realpath realpath() { canonicalize_path "$(resolve_symlinks "$1")" } resolve_symlinks() { _resolve_symlinks "$1" } _resolve_symlinks() { _assert_no_path_cycles "$@" || return local dir_context path path=$(readlink -- "$1") if [ $? -eq 0 ]; then dir_context=$(dirname -- "$1") _resolve_symlinks "$(_prepend_dir_context_if_necessary "$dir_context" "$path")" "$@" else printf '%s\n' "$1" fi } _prepend_dir_context_if_necessary() { if [ "$1" = . ]; then printf '%s\n' "$2" else _prepend_path_if_relative "$1" "$2" fi } _prepend_path_if_relative() { case "$2" in /* ) printf '%s\n' "$2" ;; * ) printf '%s\n' "$1/$2" ;; esac } _assert_no_path_cycles() { local target path target=$1 shift for path in "$@"; do if [ "$path" = "$target" ]; then return 1 fi done } canonicalize_path() { if [ -d "$1" ]; then _canonicalize_dir_path "$1" else _canonicalize_file_path "$1" fi } _canonicalize_dir_path() { (cd "$1" 2>/dev/null && pwd -P) } _canonicalize_file_path() { local dir file dir=$(dirname -- "$1") file=$(basename -- "$1") (cd "$dir" 2>/dev/null && printf '%s/%s\n' "$(pwd -P)" "$file") } # Optionally, you may also want to include: ### readlink emulation ### readlink() { if _has_command readlink; then _system_readlink "$@" else _emulated_readlink "$@" fi } _has_command() { hash -- "$1" 2>/dev/null } _system_readlink() { command readlink "$@" } _emulated_readlink() { if [ "$1" = -- ]; then shift fi _gnu_stat_readlink "$@" || _bsd_stat_readlink "$@" } _gnu_stat_readlink() { local output output=$(stat -c %N -- "$1" 2>/dev/null) && printf '%s\n' "$output" | sed "s/^‘[^’]*’ -> ‘\(.*\)’/\1/ s/^'[^']*' -> '\(.*\)'/\1/" # FIXME: handle newlines } _bsd_stat_readlink() { stat -f %Y -- "$1" 2>/dev/null } ### Specfic Osync function function CreateOsyncDirs { if ! [ -d "$MASTER_STATE_DIR" ] then mkdir -p "$MASTER_STATE_DIR" if [ $? != 0 ] then LogError "Cannot create master replica state dir [$MASTER_STATE_DIR]." exit 1 fi fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost eval "$SSH_CMD \"if ! [ -d \\\"$SLAVE_STATE_DIR\\\" ]; then $COMMAND_SUDO mkdir -p \\\"$SLAVE_STATE_DIR\\\"; fi 2>&1\"" & child_pid=$! WaitForTaskCompletion $child_pid 0 1800 else if ! [ -d "$SLAVE_STATE_DIR" ] then mkdir -p "$SLAVE_STATE_DIR" > $RUN_DIR/osync_createosyncdirs_$SCRIPT_PID 2>&1 fi fi if [ $? != 0 ] then LogError "Cannot create slave replica state dir [$SLAVE_STATE_DIR]." LogErorr "Command output:\n$(cat $RUN_DIR/osync_createosyncdirs_$SCRIPT_PID)" exit 1 fi } function CheckMasterSlaveDirs { MASTER_SYNC_DIR_CANN=$(realpath "$MASTER_SYNC_DIR") SLAVE_SYNC_DIR_CANN=$(realpath "$SLAVE_SYNC_DIR") if [ "$REMOTE_SYNC" != "yes" ] then if [ "$MASTER_SYNC_DIR_CANN" == "$SLAVE_SYNC_DIR_CANN" ] then LogError "Master directory [$MASTER_SYNC_DIR] can't be the same as slave directory." exit 1 fi fi if ! [ -d "$MASTER_SYNC_DIR" ] then if [ "$CREATE_DIRS" == "yes" ] then mkdir -p "$MASTER_SYNC_DIR" > $RUN_DIR/osync_checkmasterslavedirs_$SCRIPT_PID 2>&1 if [ $? != 0 ] then LogError "Cannot create master directory [$MASTER_SYNC_DIR]." LogError "Command output:\n$(cat $RUN_DIR/osync_checkmasterslavedirs_$SCRIPT_PID)" exit 1 fi else LogError "Master directory [$MASTER_SYNC_DIR] does not exist." exit 1 fi fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost if [ "$CREATE_DIRS" == "yes" ] then eval "$SSH_CMD \"if ! [ -d \\\"$SLAVE_SYNC_DIR\\\" ]; then $COMMAND_SUDO mkdir -p \\\"$SLAVE_SYNC_DIR\\\"; fi 2>&1"\" > $RUN_DIR/osync_checkmasterslavedirs_$SCRIPT_PID & child_pid=$! WaitForTaskCompletion $child_pid 0 1800 if [ $? != 0 ] then LogError "Cannot create slave directory [$SLAVE_SYNC_DIR]." LogError "Command output:\n$(cat $RUN_DIR/osync_checkmasterslavedirs_$SCRIPT_PID)" exit 1 fi else eval "$SSH_CMD \"if ! [ -d \\\"$SLAVE_SYNC_DIR\\\" ]; then exit 1; fi"\" & child_pid=$! WaitForTaskCompletion $child_pid 0 1800 res=$? if [ $res != 0 ] then LogError "Slave directory [$SLAVE_SYNC_DIR] does not exist." exit 1 fi fi else if [ ! -d "$SLAVE_SYNC_DIR" ] then if [ "$CREATE_DIRS" == "yes" ] then mkdir -p "$SLAVE_SYNC_DIR" if [ $? != 0 ] then LogError "Cannot create slave directory [$SLAVE_SYNC_DIR]." exit 1 else Log "Created slave directory [$SLAVE_SYNC_DIR]." fi else LogError "Slave directory [$SLAVE_SYNC_DIR] does not exist." exit 1 fi fi fi } function CheckMinimumSpace { Log "Checking minimum disk space on master and slave." MASTER_SPACE=$(df -P "$MASTER_SYNC_DIR" | tail -1 | awk '{print $4}') if [ $MASTER_SPACE -lt $MINIMUM_SPACE ] then LogError "There is not enough free space on master [$MASTER_SPACE KB]." fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost eval "$SSH_CMD \"$COMMAND_SUDO df -P \\\"$SLAVE_SYNC_DIR\\\"\"" > $RUN_DIR/osync_slave_space_$SCRIPT_PID & child_pid=$! WaitForTaskCompletion $child_pid 0 1800 SLAVE_SPACE=$(cat $RUN_DIR/osync_slave_space_$SCRIPT_PID | tail -1 | awk '{print $4}') else SLAVE_SPACE=$(df -P "$SLAVE_SYNC_DIR" | tail -1 | awk '{print $4}') fi if [ $SLAVE_SPACE -lt $MINIMUM_SPACE ] then LogError "There is not enough free space on slave [$SLAVE_SPACE KB]." fi } function RsyncExcludePattern { # Disable globbing so wildcards from exclusions don't get expanded set -f rest="$RSYNC_EXCLUDE_PATTERN" while [ -n "$rest" ] do # Take the string until first occurence until $PATH_SEPARATOR_CHAR str=${rest%%;*} # Handle the last case if [ "$rest" = "${rest/$PATH_SEPARATOR_CHAR/}" ] then rest= else # Cut everything before the first occurence of $PATH_SEPARATOR_CHAR rest=${rest#*$PATH_SEPARATOR_CHAR} fi if [ "$RSYNC_EXCLUDE" == "" ] then RSYNC_EXCLUDE="--exclude=\"$str\"" else RSYNC_EXCLUDE="$RSYNC_EXCLUDE --exclude=\"$str\"" fi done set +f } function RsyncExcludeFrom { if [ ! "$RSYNC_EXCLUDE_FROM" == "" ] then ## Check if the exclude list has a full path, and if not, add the config file path if there is one if [ "$(basename $RSYNC_EXCLUDE_FROM)" == "$RSYNC_EXCLUDE_FROM" ] then RSYNC_EXCLUDE_FROM=$(dirname $ConfigFile)/$RSYNC_EXCLUDE_FROM fi if [ -e "$RSYNC_EXCLUDE_FROM" ] then RSYNC_EXCLUDE="$RSYNC_EXCLUDE --exclude-from=\"$RSYNC_EXCLUDE_FROM\"" fi fi } function WriteLockFiles { echo $SCRIPT_PID > "$MASTER_LOCK" if [ $? != 0 ] then LogError "Could not set lock on master replica." exit 1 else Log "Locked master replica." fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost eval "$SSH_CMD \"echo $SCRIPT_PID@$SYNC_ID | $COMMAND_SUDO tee \\\"$SLAVE_LOCK\\\" > /dev/null \"" & child_pid=$! WaitForTaskCompletion $child_pid 0 1800 if [ $? != 0 ] then LogError "Could not set lock on remote slave replica." exit 1 else Log "Locked remote slave replica." fi else echo "$SCRIPT_PID@$SYNC_ID" > "$SLAVE_LOCK" if [ $? != 0 ] then LogError "Couuld not set lock on local slave replica." exit 1 else Log "Locked local slave replica." fi fi } function LockDirectories { if [ $nolocks -eq 1 ] then return 0 fi if [ $force_unlock -eq 1 ] then WriteLockFiles if [ $? != 0 ] then exit 1 fi fi Log "Checking for replica locks." if [ -f "$MASTER_LOCK" ] then master_lock_pid=$(cat $MASTER_LOCK) LogDebug "Master lock pid present: $master_lock_pid" ps -p$master_lock_pid > /dev/null 2>&1 if [ $? != 0 ] then Log "There is a dead osync lock on master. Instance $master_lock_pid no longer running. Resuming." else LogError "There is already a local instance of osync that locks master replica. Cannot start. If your are sure this is an error, plaese kill instance $master_lock_pid of osync." exit 1 fi fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost eval "$SSH_CMD \"if [ -f \\\"$SLAVE_LOCK\\\" ]; then cat \\\"$SLAVE_LOCK\\\"; fi\" > $RUN_DIR/osync_remote_slave_lock_$SCRIPT_PID" & child_pid=$! WaitForTaskCompletion $child_pid 0 1800 if [ -f $RUN_DIR/osync_remote_slave_lock_$SCRIPT_PID ] then slave_lock_pid=$(cat $RUN_DIR/osync_remote_slave_lock_$SCRIPT_PID | cut -d'@' -f1) slave_lock_id=$(cat $RUN_DIR/osync_remote_slave_lock_$SCRIPT_PID | cut -d'@' -f2) fi else if [ -f "$SLAVE_LOCK" ] then slave_lock_pid=$(cat "$SLAVE_LOCK" | cut -d'@' -f1) slave_lock_id=$(cat "$SLAVE_LOCK" | cut -d'@' -f2) fi fi if [ "$slave_lock_pid" != "" ] && [ "$slave_lock_id" != "" ] then LogDebug "Slave lock pid: $slave_lock_pid" LogDebug "Slave lock id: $slave_lock_pid" ps -p$slave_lock_pid > /dev/null if [ $? != 0 ] then if [ "$slave_lock_id" == "$SYNC_ID" ] then Log "There is a dead osync lock on slave replica that corresponds to this master sync-id. Instance $slave_lock_pid no longer running. Resuming." else if [ "$FORCE_STRANGER_LOCK_RESUME" == "yes" ] then LogError "WARNING: There is a dead osync lock on slave replica that does not correspond to this master sync-id. Forcing resume." else LogError "There is a dead osync lock on slave replica that does not correspond to this master sync-id. Will not resume." exit 1 fi fi else LogError "There is already a local instance of osync that locks slave replica. Cannot start. If you are sure this is an error, please kill instance $slave_lock_pid of osync." exit 1 fi fi WriteLockFiles } function UnlockDirectories { if [ $nolocks -eq 1 ] then return 0 fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost eval "$SSH_CMD \"if [ -f \\\"$SLAVE_LOCK\\\" ]; then $COMMAND_SUDO rm \\\"$SLAVE_LOCK\\\"; fi 2>&1\"" > $RUN_DIR/osync_UnlockDirectories_$SCRIPT_PID & child_pid=$! WaitForTaskCompletion $child_pid 0 1800 else if [ -f "$SLAVE_LOCK" ] then rm "$SLAVE_LOCK" > $RUN_DIR/osync_UnlockDirectories_$SCRIPT_PID 2>&1 fi fi if [ $? != 0 ] then LogError "Could not unlock slave replica." LogError "Command Output:\n$(cat $RUN_DIR/osync_UnlockDirectories_$SCRIPT_PID)" else Log "Removed slave replica lock." fi if [ -f "$MASTER_LOCK" ] then rm "$MASTER_LOCK" if [ $? != 0 ] then LogError "Could not unlock master replica." else Log "Removed master replica lock." fi fi } ###### Sync core functions ## Rsync does not like spaces in directory names, considering it as two different directories. Handling this schema by escaping space. ## It seems this only happens when trying to execute an rsync command through eval $rsync_cmd on a remote host. ## So i'm using unescaped $MASTER_SYNC_DIR for local rsync calls and escaped $ESC_MASTER_SYNC_DIR for remote rsync calls like user@host:$ESC_MASTER_SYNC_DIR ## The same applies for slave sync dir..............................................T.H.I.S..I.S..A..P.R.O.G.R.A.M.M.I.N.G..N.I.G.H.T.M.A.R.E ## tree_list(replica_path, replica type, tree_filename) Creates a list of files in replica_path for replica type (master/slave) in filename $3 function tree_list { Log "Creating $2 replica file list [$1]." if [ "$REMOTE_SYNC" == "yes" ] && [ "$2" == "slave" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost ESC=$(EscapeSpaces "$1") rsync_cmd="$(type -p $RSYNC_EXECUTABLE) --rsync-path=\"$RSYNC_PATH\" $RSYNC_ARGS -8 --exclude \"$OSYNC_DIR\" $RSYNC_EXCLUDE -e \"$RSYNC_SSH_CMD\" --list-only $REMOTE_USER@$REMOTE_HOST:\"$ESC/\" | grep \"^-\|^d\" | awk '{\$1=\$2=\$3=\$4=\"\" ;print}' | awk '{\$1=\$1 ;print}' | (grep -v \"^\.$\" || :) | sort > \"$RUN_DIR/osync_$2_$SCRIPT_PID\" &" else rsync_cmd="$(type -p $RSYNC_EXECUTABLE) --rsync-path=\"$RSYNC_PATH\" $RSYNC_ARGS -8 --exclude \"$OSYNC_DIR\" $RSYNC_EXCLUDE --list-only \"$1/\" | grep \"^-\|^d\" | awk '{\$1=\$2=\$3=\$4=\"\" ;print}' | awk '{\$1=\$1 ;print}' | (grep -v \"^\.$\" || :) | sort > \"$RUN_DIR/osync_$2_$SCRIPT_PID\" &" fi LogDebug "RSYNC_CMD: $rsync_cmd" ## Redirect commands stderr here to get rsync stderr output in logfile eval $rsync_cmd 2>> "$LOG_FILE" child_pid=$! WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME $HARD_MAX_EXEC_TIME retval=$? ## Retval 24 = some files vanished while creating list if ([ $retval == 0 ] || [ $retval == 24 ]) && [ -f $RUN_DIR/osync_$2_$SCRIPT_PID ] then mv $RUN_DIR/osync_$2_$SCRIPT_PID "$MASTER_STATE_DIR/$2$3" return $? else LogError "Cannot create replica file list." exit $retval fi } # delete_list(replica, tree-file-after, tree-file-current, deleted-list-file, deleted-failed-list-file): Creates a list of files vanished from last run on replica $1 (master/slave) function delete_list { Log "Creating $1 replica deleted file list." if [ -f "$MASTER_STATE_DIR/$1$TREE_AFTER_FILENAME_NO_SUFFIX" ] then ## Same functionnality, comm is much faster than grep but is not available on every platform if type -p comm > /dev/null 2>&1 then cmd="comm -23 \"$MASTER_STATE_DIR/$1$TREE_AFTER_FILENAME_NO_SUFFIX\" \"$MASTER_STATE_DIR/$1$3\" > \"$MASTER_STATE_DIR/$1$4\"" else ## The || : forces the command to have a good result cmd="(grep -F -x -v -f \"$MASTER_STATE_DIR/$1$3\" \"$MASTER_STATE_DIR/$1$TREE_AFTER_FILENAME_NO_SUFFIX\" || :) > \"$MASTER_STATE_DIR/$1$4\"" fi LogDebug "CMD: $cmd" eval $cmd retval=$? # Add delete failed file list to current delete list and then empty it if [ -f "$MASTER_STATE_DIR/$1$5" ] then cat "$MASTER_STATE_DIR/$1$5" >> "$MASTER_STATE_DIR/$1$4" rm -f "$MASTER_STATE_DIR/$1$5" fi return $retval else touch "$MASTER_STATE_DIR/$1$4" return $retval fi } # sync_update(source replica, destination replica, delete_list_filename) function sync_update { Log "Updating $2 replica." if [ "$1" == "master" ] then SOURCE_DIR="$MASTER_SYNC_DIR" ESC_SOURCE_DIR=$(EscapeSpaces "$MASTER_SYNC_DIR") DEST_DIR="$SLAVE_SYNC_DIR" ESC_DEST_DIR=$(EscapeSpaces "$SLAVE_SYNC_DIR") BACKUP_DIR="$SLAVE_BACKUP" else SOURCE_DIR="$SLAVE_SYNC_DIR" ESC_SOURCE_DIR=$(EscapeSpaces "$SLAVE_SYNC_DIR") DEST_DIR="$MASTER_SYNC_DIR" ESC_DEST_DIR=$(EscapeSpaces "$MASTER_SYNC_DIR") BACKUP_DIR="$MASTER_BACKUP" fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost if [ "$1" == "master" ] then rsync_cmd="$(type -p $RSYNC_EXECUTABLE) --rsync-path=\"$RSYNC_PATH\" $RSYNC_ARGS $SYNC_OPTS -e \"$RSYNC_SSH_CMD\" $BACKUP_DIR --exclude \"$OSYNC_DIR\" $RSYNC_EXCLUDE --exclude-from=\"$MASTER_STATE_DIR/$1$3\" --exclude-from=\"$MASTER_STATE_DIR/$2$3\" \"$SOURCE_DIR/\" $REMOTE_USER@$REMOTE_HOST:\"$ESC_DEST_DIR/\" > $RUN_DIR/osync_update_$2_replica_$SCRIPT_PID 2>&1 &" else rsync_cmd="$(type -p $RSYNC_EXECUTABLE) --rsync-path=\"$RSYNC_PATH\" $RSYNC_ARGS $SYNC_OPTS -e \"$RSYNC_SSH_CMD\" $BACKUP_DIR --exclude \"$OSYNC_DIR\" $RSYNC_EXCLUDE --exclude-from=\"$MASTER_STATE_DIR/$2$3\" --exclude-from=\"$MASTER_STATE_DIR/$1$3\" $REMOTE_USER@$REMOTE_HOST:\"$ESC_SOURCE_DIR/\" \"$DEST_DIR/\" > $RUN_DIR/osync_update_$2_replica_$SCRIPT_PID 2>&1 &" fi else rsync_cmd="$(type -p $RSYNC_EXECUTABLE) --rsync-path=\"$RSYNC_PATH\" $RSYNC_ARGS $SYNC_OPTS $BACKUP_DIR --exclude \"$OSYNC_DIR\" $RSYNC_EXCLUDE --exclude-from=\"$MASTER_STATE_DIR/$1$3\" --exclude-from=\"$MASTER_STATE_DIR/$2$3\" \"$SOURCE_DIR/\" \"$DEST_DIR/\" > $RUN_DIR/osync_update_$2_replica_$SCRIPT_PID 2>&1 &" fi LogDebug "RSYNC_CMD: $rsync_cmd" eval "$rsync_cmd" child_pid=$! WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME $HARD_MAX_EXEC_TIME retval=$? if [ $verbose -eq 1 ] && [ -f $RUN_DIR/osync_update_$2_replica_$SCRIPT_PID ] then Log "List:\n$(cat $RUN_DIR/osync_update_$2_replica_$SCRIPT_PID)" fi if [ $retval != 0 ] && [ $retval != 24 ] then LogError "Updating $2 replica failed. Stopping execution." if [ $verbose -eq 0 ] && [ -f $RUN_DIR/osync_update_$2_replica_$SCRIPT_PID ] then LogError "Rsync output:\n$(cat $RUN_DIR/osync_update_$2_replica_$SCRIPT_PID)" fi exit $retval else Log "Updating $2 replica succeded." return 0 fi } # delete_local(replica dir, delete file list, delete dir, delete failed file) function _delete_local { ## On every run, check wheter the next item is already deleted because it's included in a directory already deleted previous_file="" OLD_IFS=$IFS IFS=$'\r\n' for files in $(cat "$MASTER_STATE_DIR/$2") do if [[ "$files" != "$previous_file/"* ]] && [ "$files" != "" ] then if [ "$SOFT_DELETE" != "no" ] then if [ ! -d "$REPLICA_DIR$3" ] then mkdir -p "$REPLICA_DIR$3" if [ $? != 0 ] then LogError "Cannot create replica deletion directory." fi fi if [ $verbose -eq 1 ] then Log "Soft deleting $REPLICA_DIR$files" fi if [ $dryrun -ne 1 ] then if [ -e "$REPLICA_DIR$3/$files" ] then rm -rf "$REPLICA_DIR$3/$files" fi # In order to keep full path on soft deletion, create parent directories before move parentdir="$(dirname "$files")" if [ "$parentdir" != "." ] then mkdir --parents "$REPLICA_DIR$3/$parentdir" mv -f "$REPLICA_DIR$files" "$REPLICA_DIR$3/$parentdir" else mv -f "$REPLICA_DIR$files" "$REPLICA_DIR$3" fi if [ $? != 0 ] then LogError "Cannot move $REPLICA_DIR$files to deletion directory." echo "$files" >> "$MASTER_STATE_DIR/$4" fi fi else if [ $verbose -eq 1 ] then Log "Deleting $REPLICA_DIR$files" fi if [ $dryrun -ne 1 ] then rm -rf "$REPLICA_DIR$files" if [ $? != 0 ] then LogError "Cannot delete $REPLICA_DIR$files" echo "$files" >> "$MASTER_STATE_DIR/$4" fi fi fi previous_file="$files" fi done IFS=$OLD_IFS } # delete_remote(replica dir, delete file list, delete dir, delete fail file list) function _delete_remote { ## This is a special coded function. Need to redelcare local functions on remote host, passing all needed variables as escaped arguments to ssh command. ## Anything beetween << ENDSSH and ENDSSH will be executed remotely # Additionnaly, we need to copy the deletetion list to the remote state folder ESC_DEST_DIR="$(EscapeSpaces "$SLAVE_STATE_DIR")" rsync_cmd="$(type -p $RSYNC_EXECUTABLE) --rsync-path=\"$RSYNC_PATH\" $SYNC_OPTS -e \"$RSYNC_SSH_CMD\" \"$MASTER_STATE_DIR/$2\" $REMOTE_USER@$REMOTE_HOST:\"$ESC_DEST_DIR/\" > $RUN_DIR/osync_remote_deletion_list_copy_$SCRIPT_PID 2>&1" LogDebug "RSYNC_CMD: $rsync_cmd" eval $rsync_cmd 2>> "$LOG_FILE" if [ $? != 0 ] then LogError "Cannot copy the deletion list to remote replica." if [ -f $RUN_DIR/osync_remote_deletion_list_copy_$SCRIPT_PID ] then LogError "$(cat $RUN_DIR/osync_remote_deletion_list_copy_$SCRIPT_PID)" fi exit 1 fi $SSH_CMD error_alert=0 sync_on_changes=$sync_on_changes silent=$silent DEBUG=$DEBUG dryrun=$dryrun verbose=$verbose COMMAND_SUDO=$COMMAND_SUDO FILE_LIST="$(EscapeSpaces "$SLAVE_STATE_DIR/$2")" REPLICA_DIR="$(EscapeSpaces "$REPLICA_DIR")" DELETE_DIR="$(EscapeSpaces "$DELETE_DIR")" FAILED_DELETE_LIST="$(EscapeSpaces "$SLAVE_STATE_DIR/$4")" 'bash -s' << 'ENDSSH' > $RUN_DIR/osync_remote_deletion_$SCRIPT_PID 2>&1 & ## The following lines are executed remotely function Log { if [ $sync_on_changes -eq 1 ] then prefix="$(date) - " else prefix="R-TIME: $SECONDS - " fi if [ $silent -eq 0 ] then echo -e "$prefix$1" fi } function LogError { Log "$1" error_alert=1 } ## Empty earlier failed delete list > "$FAILED_DELETE_LIST" ## On every run, check wheter the next item is already deleted because it's included in a directory already deleted previous_file="" OLD_IFS=$IFS IFS=$'\r\n' for files in $(cat "$FILE_LIST") do if [[ "$files" != "$previous_file/"* ]] && [ "$files" != "" ] then if [ ! -d "$REPLICA_DIR$DELETE_DIR" ] then $COMMAND_SUDO mkdir -p "$REPLICA_DIR$DELETE_DIR" if [ $? != 0 ] then LogError "Cannot create replica deletion directory." fi fi if [ "$SOFT_DELETE" != "no" ] then if [ $verbose -eq 1 ] then Log "Soft deleting $REPLICA_DIR$files" fi if [ $dryrun -ne 1 ] then if [ -e "$REPLICA_DIR$DELETE_DIR/$files" ] then $COMMAND_SUDO rm -rf "$REPLICA_DIR$DELETE_DIR/$files" fi # In order to keep full path on soft deletion, create parent directories before move parentdir="$(dirname "$files")" if [ "$parentdir" != "." ] then $COMMAND_SUDO mkdir --parents "$REPLICA_DIR$DELETE_DIR/$parentdir" $COMMAND_SUDO mv -f "$REPLICA_DIR$files" "$REPLICA_DIR$DELETE_DIR/$parentdir" else $COMMAND_SUDO mv -f "$REPLICA_DIR$files" "$REPLICA_DIR$DELETE_DIR" fi if [ $? != 0 ] then LogError "Cannot move $REPLICA_DIR$files to deletion directory." echo "$files" >> "$FAILED_DELETE_LIST" fi fi else if [ $verbose -eq 1 ] then Log "Deleting $REPLICA_DIR$files" fi if [ $dryrun -ne 1 ] then $COMMAND_SUDO rm -rf "$REPLICA_DIR$files" if [ $? != 0 ] then LogError "Cannot delete $REPLICA_DIR$files" echo "$files" >> "$SLAVE_STATE_DIR/$FAILED_DELETE_LIST" fi fi fi previous_file="$files" fi done IFS=$OLD_IFS ENDSSH ## Need to add a trivial sleep time to give ssh time to log to local file sleep 5 ## Copy back the deleted failed file list ESC_SOURCE_FILE="$(EscapeSpaces "$SLAVE_STATE_DIR/$4")" rsync_cmd="$(type -p $RSYNC_EXECUTABLE) --rsync-path=\"$RSYNC_PATH\" $SYNC_OPTS -e \"$RSYNC_SSH_CMD\" $REMOTE_USER@$REMOTE_HOST:\"$ESC_SOURCE_FILE\" \"$MASTER_STATE_DIR\" > $RUN_DIR/osync_remote_failed_deletion_list_copy_$SCRIPT_PID" LogDebug "RSYNC_CMD: $rsync_cmd" eval $rsync_cmd 2>> "$LOG_FILE" if [ $? != 0 ] then LogError "Cannot copy back the failed deletion list to master replica." if [ -f $RUN_DIR/osync_remote_failed_deletion_list_copy_$SCRIPT_PID ] then LogError "$(cat $RUN_DIR/osync_remote_failed_deletion_list_copy_$SCRIPT_PID)" fi exit 1 fi exit $? } # delete_propagation(replica name, deleted_list_filename, deleted_failed_file_list) # replica name = "master" / "slave" function deletion_propagation { Log "Propagating deletions to $1 replica." if [ "$1" == "master" ] then REPLICA_DIR="$MASTER_SYNC_DIR" DELETE_DIR="$MASTER_DELETE_DIR" _delete_local "$REPLICA_DIR" "slave$2" "$DELETE_DIR" "slave$3" & child_pid=$! WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME $HARD_MAX_EXEC_TIME retval=$? if [ $retval != 0 ] then LogError "Deletion on replica $1 failed." exit 1 fi else REPLICA_DIR="$SLAVE_SYNC_DIR" DELETE_DIR="$SLAVE_DELETE_DIR" if [ "$REMOTE_SYNC" == "yes" ] then _delete_remote "$REPLICA_DIR" "master$2" "$DELETE_DIR" "master$3" & else _delete_local "$REPLICA_DIR" "master$2" "$DELETE_DIR" "master$3" & fi child_pid=$! WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME $HARD_MAX_EXEC_TIME retval=$? if [ $retval == 0 ] then if [ -f $RUN_DIR/osync_remote_deletion_$SCRIPT_PID ] && [ $verbose -eq 1 ] then Log "Remote:\n$(cat $RUN_DIR/osync_remote_deletion_$SCRIPT_PID)" fi return $retval else LogError "Deletion on remote system failed." if [ -f $RUN_DIR/osync_remote_deletion_$SCRIPT_PID ] then LogError "Remote:\n$(cat $RUN_DIR/osync_remote_deletion_$SCRIPT_PID)" fi exit 1 fi fi } ###### Sync function in 5 steps of each 2 runs (functions above) ###### ###### Step 1: Create current tree list for master and slave replicas (Steps 1M and 1S) ###### Step 2: Create deleted file list for master and slave replicas (Steps 2M and 2S) ###### Step 3: Update master and slave replicas (Steps 3M and 3S, order depending on conflict prevalence) ###### Step 4: Deleted file propagation to master and slave replicas (Steps 4M and 4S) ###### Step 5: Create after run tree list for master and slave replicas (Steps 5M and 5S) function Sync { Log "Starting synchronization task." CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost if [ -f "$MASTER_LAST_ACTION" ] && [ "$RESUME_SYNC" != "no" ] then resume_sync=$(cat "$MASTER_LAST_ACTION") if [ -f "$MASTER_RESUME_COUNT" ] then resume_count=$(cat "$MASTER_RESUME_COUNT") else resume_count=0 fi if [ $resume_count -lt $RESUME_TRY ] then if [ "$resume_sync" != "sync.success" ] then Log "WARNING: Trying to resume aborted osync execution on $($STAT_CMD "$MASTER_LAST_ACTION") at task [$resume_sync]. [$resume_count] previous tries." echo $(($resume_count+1)) > "$MASTER_RESUME_COUNT" else resume_sync=none fi else Log "Will not resume aborted osync execution. Too much resume tries [$resume_count]." echo "noresume" > "$MASTER_LAST_ACTION" echo "0" > "$MASTER_RESUME_COUNT" resume_sync=none fi else resume_sync=none fi ################################################################################################################################################# Actual sync begins here ## This replaces the case statement because ;& operator is not supported in bash 3.2... Code is more messy than case :( if [ "$resume_sync" == "none" ] || [ "$resume_sync" == "noresume" ] || [ "$resume_sync" == "master-replica-tree.fail" ] then #master_tree_current tree_list "$MASTER_SYNC_DIR" master "$TREE_CURRENT_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[0]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[0]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[0]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[1]}.fail" ] then #slave_tree_current tree_list "$SLAVE_SYNC_DIR" slave "$TREE_CURRENT_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[1]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[1]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[1]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[2]}.fail" ] then delete_list master "$TREE_AFTER_FILENAME" "$TREE_CURRENT_FILENAME" "$DELETED_LIST_FILENAME" "$FAILED_DELETE_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[2]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNc_ACTION[2]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[2]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[3]}.fail" ] then delete_list slave "$TREE_AFTER_FILENAME" "$TREE_CURRENT_FILENAME" "$DELETED_LIST_FILENAME" "$FAILED_DELETE_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[3]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[3]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[3]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[4]}.fail" ] || [ "$resume_sync" == "${SYNC_ACTION[5]}.fail" ] || [ "$resume_sync" == "${SYNC_ACTION[4]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[5]}.success" ] then if [ "$CONFLICT_PREVALANCE" != "master" ] then if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[3]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[4]}.fail" ] then sync_update slave master "$DELETED_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[4]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[4]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[4]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[5]}.fail" ] then sync_update master slave "$DELETED_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[5]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[5]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi else if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[3]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[5]}.fail" ] then sync_update master slave "$DELETED_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[5]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[5]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[5]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[4]}.fail" ] then sync_update slave master "$DELETED_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[4]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[4]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi fi fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[5]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[4]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[6]}.fail" ] then deletion_propagation slave "$DELETED_LIST_FILENAME" "$FAILED_DELETE_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[6]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[6]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[6]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[7]}.fail" ] then deletion_propagation master "$DELETED_LIST_FILENAME" "$FAILED_DELETE_LIST_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[7]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[7]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[7]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[8]}.fail" ] then #master_tree_after tree_list "$MASTER_SYNC_DIR" master "$TREE_AFTER_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[8]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[8]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi if [ "$resume_sync" == "resumed" ] || [ "$resume_sync" == "${SYNC_ACTION[8]}.success" ] || [ "$resume_sync" == "${SYNC_ACTION[9]}.fail" ] then #slave_tree_after tree_list "$SLAVE_SYNC_DIR" slave "$TREE_AFTER_FILENAME" if [ $? == 0 ] then echo "${SYNC_ACTION[9]}.success" > "$MASTER_LAST_ACTION" else echo "${SYNC_ACTION[9]}.fail" > "$MASTER_LAST_ACTION" fi resume_sync="resumed" fi Log "Finished synchronization task." echo "${SYNC_ACTION[10]}" > "$MASTER_LAST_ACTION" echo "0" > "$MASTER_RESUME_COUNT" } function SoftDelete { if [ "$CONFLICT_BACKUP" != "no" ] && [ $CONFLICT_BACKUP_DAYS -ne 0 ] then Log "Running conflict backup cleanup." _SoftDelete $CONFLICT_BACKUP_DAYS "$MASTER_SYNC_DIR$MASTER_BACKUP_DIR" "$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR" fi if [ "$SOFT_DELETE" != "no" ] && [ $SOFT_DELETE_DAYS -ne 0 ] then Log "Running soft deletion cleanup." _SoftDelete $SOFT_DELETE_DAYS "$MASTER_SYNC_DIR$MASTER_DELETE_DIR" "$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR" fi } # Takes 3 arguments # $1 = ctime (CONFLICT_BACKUP_DAYS or SOFT_DELETE_DAYS), $2 = MASTER_(BACKUP/DELETED)_DIR, $3 = SLAVE_(BACKUP/DELETED)_DIR function _SoftDelete { if [ -d "$2" ] then if [ $dryrun -eq 1 ] then Log "Listing files older than $1 days on master replica. Won't remove anything." else Log "Removing files older than $1 days on master replica." fi if [ $verbose -eq 1 ] then # Cannot launch log function from xargs, ugly hack $FIND_CMD "$2/" -type f -ctime +$1 -print0 | xargs -0 -I {} echo "Will delete file {}" > $RUN_DIR/osync_soft_delete_master_$SCRIPT_PID Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_master_$SCRIPT_PID)" $FIND_CMD "$2/" -type d -empty -ctime +$1 -print0 | xargs -0 -I {} echo "Will delete directory {}" > $RUN_DIR/osync_soft_delete_master_$SCRIPT_PID Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_master_$SCRIPT_PID)" fi if [ $dryrun -ne 1 ] then $FIND_CMD "$2/" -type f -ctime +$1 -print0 | xargs -0 -I {} rm -f "{}" && $FIND_CMD "$2/" -type d -empty -ctime +$1 -print0 | xargs -0 -I {} rm -rf "{}" > $RUN_DIR/osync_soft_delete_master_$SCRIPT_PID 2>&1 & else Dummy & fi child_pid=$! WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME $HARD_MAX_EXEC_TIME retval=$? if [ $retval -ne 0 ] then LogError "Error while executing cleanup on master replica." Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_master_$SCRIPT_PID)" else Log "Cleanup complete on master replica." fi elif [ -d "$2" ] && ! [ -w "$2" ] then LogError "Warning: Master replica dir [$2] isn't writable. Cannot clean old files." fi if [ "$REMOTE_SYNC" == "yes" ] then CheckConnectivity3rdPartyHosts CheckConnectivityRemoteHost if [ $dryrun -eq 1 ] then Log "Listing files older than $1 days on slave replica. Won't remove anything." else Log "Removing files older than $1 days on slave replica." fi if [ $verbose -eq 1 ] then # Cannot launch log function from xargs, ugly hack eval "$SSH_CMD \"if [ -w \\\"$3\\\" ]; then $COMMAND_SUDO $REMOTE_FIND_CMD \\\"$3/\\\" -type f -ctime +$1 -print0 | xargs -0 -I {} echo Will delete file {} && $REMOTE_FIND_CMD \\\"$3/\\\" -type d -empty -ctime $1 -print0 | xargs -0 -I {} echo Will delete directory {}; fi\"" > $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID)" fi if [ $dryrun -ne 1 ] then eval "$SSH_CMD \"if [ -w \\\"$3\\\" ]; then $COMMAND_SUDO $REMOTE_FIND_CMD \\\"$3/\\\" -type f -ctime +$1 -print0 | xargs -0 -I {} rm -f \\\"{}\\\" && $REMOTE_FIND_CMD \\\"$3/\\\" -type d -empty -ctime $1 -print0 | xargs -0 -I {} rm -rf \\\"{}\\\"; fi 2>&1\"" > $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID & else Dummy & fi child_pid=$! WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME $HARD_MAX_EXEC_TIME retval=$? if [ $retval -ne 0 ] then LogError "Error while executing cleanup on slave replica." Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID)" else Log "Cleanup complete on slave replica." fi else if [ -w "$3" ] then if [ $dryrun -eq 1 ] then Log "Listing files older than $1 days on slave replica. Won't remove anything." else Log "Removing files older than $1 days on slave replica." fi if [ $verbose -eq 1 ] then # Cannot launch log function from xargs, ugly hack $FIND_CMD "$3/" -type f -ctime +$1 -print0 | xargs -0 -I {} echo "Will delete file {}" > $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID)" $FIND_CMD "$3/" -type d -empty -ctime +$1 -print0 | xargs -0 -I {} echo "Will delete directory {}" > $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID)" Dummy & fi if [ $dryrun -ne 1 ] then $FIND_CMD "$3/" -type f -ctime +$1 -print0 | xargs -0 -I {} rm -f "{}" && $FIND_CMD "$3/" -type d -empty -ctime +$1 -print0 | xargs -0 -I {} rm -rf "{}" > $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID & fi child_pid=$! WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME $HARD_MAX_EXEC_TIME retval=$? if [ $retval -ne 0 ] then LogError "Error while executing cleanup on slave replica." Log "Command output:\n$(cat $RUN_DIR/osync_soft_delete_slave_$SCRIPT_PID)" else Log "Cleanup complete on slave replica." fi elif [ -d "$3" ] && ! [ -w "$3" ] then LogError "Warning: Slave replica dir [$3] isn't writable. Cannot clean old files." fi fi } function Init { # Set error exit code if a piped command fails set -o pipefail set -o errtrace # Do not use exit and quit traps if osync runs in monitor mode if [ $sync_on_changes -eq 0 ] then trap TrapStop SIGINT SIGKILL SIGHUP SIGTERM SIGQUIT trap TrapQuit SIGKILL EXIT else trap TrapQuit SIGTERM EXIT SIGKILL SIGHUP SIGQUIT fi if [ "$DEBUG" == "yes" ] then trap 'TrapError ${LINENO} $?' ERR fi MAIL_ALERT_MSG="Warning: Execution of osync instance $OSYNC_ID (pid $SCRIPT_PID) as $LOCAL_USER@$LOCAL_HOST produced errors on $(date)." ## Test if slave dir is a ssh uri, and if yes, break it down it its values if [ "${SLAVE_SYNC_DIR:0:6}" == "ssh://" ] then REMOTE_SYNC="yes" # remove leadng 'ssh://' uri=${SLAVE_SYNC_DIR#ssh://*} if [[ "$uri" == *"@"* ]] then # remove everything after '@' REMOTE_USER=${uri%@*} else REMOTE_USER=$LOCAL_USER fi if [ "$SSH_RSA_PRIVATE_KEY" == "" ] then SSH_RSA_PRIVATE_KEY=~/.ssh/id_rsa fi # remove everything before '@' _hosturiandpath=${uri#*@} # remove everything after first '/' _hosturi=${_hosturiandpath%%/*} if [[ "$_hosturi" == *":"* ]] then REMOTE_PORT=${_hosturi##*:} else REMOTE_PORT=22 fi REMOTE_HOST=${_hosturi%%:*} # remove everything before first '/' SLAVE_SYNC_DIR=${_hosturiandpath#*/} fi ## Make sure there is only one trailing slash on path MASTER_SYNC_DIR="${MASTER_SYNC_DIR%/}/" SLAVE_SYNC_DIR="${SLAVE_SYNC_DIR%/}/" MASTER_STATE_DIR="$MASTER_SYNC_DIR$OSYNC_DIR/state" SLAVE_STATE_DIR="$SLAVE_SYNC_DIR$OSYNC_DIR/state" STATE_DIR="$OSYNC_DIR/state" MASTER_LOCK="$MASTER_STATE_DIR/lock" SLAVE_LOCK="$SLAVE_STATE_DIR/lock" ## Working directories to keep backups of updated / deleted files MASTER_BACKUP_DIR="$OSYNC_DIR/backups" MASTER_DELETE_DIR="$OSYNC_DIR/deleted" SLAVE_BACKUP_DIR="$OSYNC_DIR/backups" SLAVE_DELETE_DIR="$OSYNC_DIR/deleted" ## Partial downloads dirs PARTIAL_DIR=$OSYNC_DIR"_partial" ## SSH compression if [ "$SSH_COMPRESSION" != "no" ] then SSH_COMP=-C else SSH_COMP= fi ## Define which runner (local bash or distant ssh) to use for standard commands and rsync commands if [ "$REMOTE_SYNC" == "yes" ] then SSH_CMD="$(type -p ssh) $SSH_COMP -i $SSH_RSA_PRIVATE_KEY $REMOTE_USER@$REMOTE_HOST -p $REMOTE_PORT" SCP_CMD="$(type -p scp) $SSH_COMP -i $SSH_RSA_PRIVATE_KEY -P $REMOTE_PORT" RSYNC_SSH_CMD="$(type -p ssh) $SSH_COMP -i $SSH_RSA_PRIVATE_KEY -p $REMOTE_PORT" fi ## Support for older config files without RSYNC_EXECUTABLE option if [ "$RSYNC_EXECUTABLE" == "" ] then RSYNC_EXECUTABLE=rsync fi ## Sudo execution option if [ "$SUDO_EXEC" == "yes" ] then if [ "$RSYNC_REMOTE_PATH" != "" ] then RSYNC_PATH="sudo $RSYNC_REMOTE_PATH/$RSYNC_EXECUTABLE" else RSYNC_PATH="sudo $RSYNC_EXECUTABLE" fi COMMAND_SUDO="sudo" else if [ "$RSYNC_REMOTE_PATH" != "" ] then RSYNC_PATH="$RSYNC_REMOTE_PATH/$RSYNC_EXECUTABLE" else RSYNC_PATH="$RSYNC_EXECUTABLE" fi COMMAND_SUDO="" fi ## Set rsync default arguments RSYNC_ARGS="-rlptgoD" if [ "$PRESERVE_ACL" == "yes" ] then RSYNC_ARGS=$RSYNC_ARGS" -A" fi if [ "$PRESERVE_XATTR" == "yes" ] then RSYNC_ARGS=$RSYNC_ARGS" -X" fi if [ "$RSYNC_COMPRESS" == "yes" ] then RSYNC_ARGS=$RSYNC_ARGS" -z" fi if [ "$COPY_SYMLINKS" == "yes" ] then RSYNC_ARGS=$RSYNC_ARGS" -L" fi if [ "$KEEP_DIRLINKS" == "yes" ] then RSYNC_ARGS=$RSYNC_ARGS" -K" fi if [ "$PRESERVE_HARDLINKS" == "yes" ] then RSYNC_ARGS=$RSYNC_ARGS" -H" fi if [ "$CHECKSUM" == "yes" ] then RSYNC_ARGS=$RSYNC_ARGS" --checksum" fi if [ $dryrun -eq 1 ] then RSYNC_ARGS=$RSYNC_ARGS" -n" DRY_WARNING="/!\ DRY RUN" fi if [ "$BANDWIDTH" != "" ] && [ "$BANDWIDTH" != "0" ] then RSYNC_ARGS=$RSYNC_ARGS" --bwlimit=$BANDWIDTH" fi ## Set sync only function arguments for rsync SYNC_OPTS="-u" if [ $verbose -eq 1 ] then SYNC_OPTS=$SYNC_OPTS"i" fi if [ $stats -eq 1 ] then SYNC_OPTS=$SYNC_OPTS" --stats" fi if [ "$PARTIAL" == "yes" ] then SYNC_OPTS=$SYNC_OPTS" --partial --partial-dir=\"$PARTIAL_DIR\"" RSYNC_EXCLUDE="$RSYNC_EXCLUDE --exclude=\"$PARTIAL_DIR\"" fi ## Conflict options if [ "$CONFLICT_BACKUP" != "no" ] then MASTER_BACKUP="--backup --backup-dir=\"$MASTER_BACKUP_DIR\"" SLAVE_BACKUP="--backup --backup-dir=\"$SLAVE_BACKUP_DIR\"" if [ "$CONFLICT_BACKUP_MULTIPLE" == "yes" ] then MASTER_BACKUP="$MASTER_BACKUP --suffix .$(date +%Y.%m.%d-%H.%M.%S)" SLAVE_BACKUP="$SLAVE_BACKUP --suffix .$(date +%Y.%m.%d-%H.%M.%S)" fi else MASTER_BACKUP= SLAVE_BACKUP= fi ## Add Rsync exclude patterns RsyncExcludePattern ## Add Rsync exclude from file RsyncExcludeFrom ## Filenames for state files if [ $dryrun -eq 1 ] then dry_suffix="-dry" fi TREE_CURRENT_FILENAME="-tree-current-$SYNC_ID$dry_suffix" TREE_AFTER_FILENAME="-tree-after-$SYNC_ID$dry_suffix" TREE_AFTER_FILENAME_NO_SUFFIX="-tree-after-$SYNC_ID" DELETED_LIST_FILENAME="-deleted-list-$SYNC_ID$dry_suffix" FAILED_DELETE_LIST_FILENAME="-failed-delete-$SYNC_ID$dry_suffix" MASTER_LAST_ACTION="$MASTER_STATE_DIR/last-action-$SYNC_ID$dry_suffix" MASTER_RESUME_COUNT="$MASTER_STATE_DIR/resume-count-$SYNC_ID$dry_suffix" ## Sync function actions (0-9) SYNC_ACTION=( 'master-replica-tree' 'slave-replica-tree' 'master-deleted-list' 'slave-deleted-list' 'update-master-replica' 'update-slave-replica' 'delete-propagation-slave' 'delete-propagation-master' 'master-replica-tree-after' 'slave-replica-tree-after' 'sync.success' ) ## Set compression executable and extension COMPRESSION_LEVEL=3 if type -p xz > /dev/null 2>&1 then COMPRESSION_PROGRAM="| xz -$COMPRESSION_LEVEL" COMPRESSION_EXTENSION=.xz elif type -p lzma > /dev/null 2>&1 then COMPRESSION_PROGRAM="| lzma -$COMPRESSION_LEVEL" COMPRESSION_EXTENSION=.lzma elif type -p pigz > /dev/null 2>&1 then COMPRESSION_PROGRAM="| pigz -$COMPRESSION_LEVEL" COMPRESSION_EXTENSION=.gz COMPRESSION_OPTIONS=--rsyncable elif type -p gzip > /dev/null 2>&1 then COMPRESSION_PROGRAM="| gzip -$COMPRESSION_LEVEL" COMPRESSION_EXTENSION=.gz COMPRESSION_OPTIONS=--rsyncable else COMPRESSION_PROGRAM= COMPRESSION_EXTENSION= fi ALERT_LOG_FILE="$ALERT_LOG_FILE$COMPRESSION_EXTENSION" } function InitLocalOSSettings { ## If running under Msys, some commands don't run the same way ## Using mingw version of find instead of windows one ## Getting running processes is quite different ## Ping command isn't the same if [ "$LOCAL_OS" == "msys" ] then FIND_CMD=$(dirname $BASH)/find ## TODO: The following command needs to be checked on msys. Does the $1 variable substitution work ? PROCESS_TEST_CMD='ps -a | awk "{\$1=\$1}\$1" | awk "{print \$1}" | grep $1' PING_CMD="ping -n 2" else FIND_CMD=find PROCESS_TEST_CMD='ps -p$1' PING_CMD="ping -c 2 -i .2" fi ## Stat command has different syntax on Linux and FreeBSD/MacOSX if [ "$LOCAL_OS" == "MacOSX" ] || [ "$LOCAL_OS" == "BSD" ] then STAT_CMD="stat -f \"%Sm\"" else STAT_CMD="stat --format %y" fi } function InitRemoteOSSettings { ## MacOSX does not use the -E parameter like Linux or BSD does (-E is mapped to extended attrs instead of preserve executability) if [ "$LOCAL_OS" != "MacOSX" ] && [ "$REMOTE_OS" != "MacOSX" ] then RSYNC_ARGS=$RSYNC_ARGS" -E" fi if [ "$REMOTE_OS" == "msys" ] then REMOTE_FIND_CMD=$(dirname $BASH)/find else REMOTE_FIND_CMD=find fi } function Main { CreateOsyncDirs LockDirectories Sync } function Usage { echo "$PROGRAM $PROGRAM_VERSION $PROGRAM_BUILD" echo $AUTHOR echo $CONTACT echo "" echo "You may use Osync with a full blown configuration file, or use its default options for quick command line sync." echo "Usage: osync.sh /path/to/config/file [OPTIONS]" echo "or osync.sh --master=/path/to/master/replica --slave=/path/to/slave/replica [OPTIONS] [QUICKSYNC OPTIONS]" echo "or osync.sh --master=/path/to/master/replica --slave=ssh://[backupuser]@remotehost.com[:portnumber]//path/to/slave/replica [OPTIONS] [QUICKSYNC OPTIONS]" echo "" echo "[OPTIONS]" echo "--dry Will run osync without actually doing anything; just testing" echo "--silent Will run osync without any output to stdout, used for cron jobs" echo "--verbose Increases output" echo "--stats Adds rsync transfer statistics to verbose output" echo "--partial Allows rsync to keep partial downloads that can be resumed later (experimental)" echo "--no-maxtime Disables any soft and hard execution time checks" echo "--force-unlock Will override any existing active or dead locks on master and slave replica" echo "--on-changes Will launch a sync task after a short wait period if there is some file activity on master replica. You should try daemon mode instead" echo "" echo "[QUICKSYNC OPTIONS]" echo "--master=\"\" Master replica path. Will contain state and backup directory (is mandatory)" echo "--slave=\"\" Local or remote slave replica path. Can be a ssh uri like ssh://user@host.com:22//path/to/slave/replica (is mandatory)" echo "--rsakey=\"\" Alternative path to rsa private key for ssh connection to slave replica" echo "--sync-id=\"\" Optional sync task name to identify this synchronization task when using multiple slaves" echo "" echo "Additionnaly, you may set most osync options at runtime. eg:" echo "SOFT_DELETE_DAYS=365 osync.sh --master=/path --slave=/other/path" echo "" exit 128 } function SyncOnChanges { if ! type -p inotifywait > /dev/null 2>&1 then LogError "No inotifywait command found. Cannot monitor changes." exit 1 fi Log "#### Running Osync in file monitor mode." while true do if [ "$ConfigFile" != "" ] then cmd="bash $osync_cmd \"$ConfigFile\" $opts" else cmd="bash $osync_cmd $opts" fi eval $cmd retval=$? if [ $retval != 0 ] then LogError "osync child exited with error." exit $retval fi Log "#### Monitoring now." inotifywait --exclude $OSYNC_DIR $RSYNC_EXCLUDE -qq -r -e create -e modify -e delete -e move -e attrib --timeout "$MAX_WAIT" "$MASTER_SYNC_DIR" & sub_pid=$! wait $sub_pid retval=$? if [ $retval == 0 ] then Log "#### Changes detected, waiting $MIN_WAIT seconds before running next sync." sleep $MIN_WAIT elif [ $retval == 2 ] then Log "#### $MAX_WAIT timeout reached, running sync." else LogError "#### inotify error detected, waiting $MIN_WAIT seconds before running next sync." sleep $MIN_WAIT fi done } # Comand line argument flags dryrun=0 silent=0 if [ "$DEBUG" == "yes" ] then verbose=1 else verbose=0 fi stats=0 PARTIAL=0 force_unlock=0 no_maxtime=0 # Alert flags opts="" soft_alert_total=0 error_alert=0 soft_stop=0 quick_sync=0 sync_on_changes=0 nolocks=0 osync_cmd=$0 if [ $# -eq 0 ] then Usage fi first=1 for i in "$@" do case $i in --dry) dryrun=1 opts=$opts" --dry" ;; --silent) silent=1 opts=$opts" --silent" ;; --verbose) verbose=1 opts=$opts" --verbose" ;; --stats) stats=1 opts=$opts" --stats" ;; --partial) PARTIAL="yes" opts=$opts" --partial" ;; --force-unlock) force_unlock=1 opts=$opts" --force-unlock" ;; --no-maxtime) no_maxtime=1 opts=$opts" --no-maxtime" ;; --help|-h|--version|-v) Usage ;; --master=*) quick_sync=$(($quick_sync + 1)) no_maxtime=1 MASTER_SYNC_DIR=${i##*=} opts=$opts" --master=\"$MASTER_SYNC_DIR\"" ;; --slave=*) quick_sync=$(($quick_sync + 1)) SLAVE_SYNC_DIR=${i##*=} opts=$opts" --slave=\"$SLAVE_SYNC_DIR\"" no_maxtime=1 ;; --rsakey=*) SSH_RSA_PRIVATE_KEY=${i##*=} opts=$opts" --rsakey=\"$SSH_RSA_PRIVATE_KEY\"" ;; --sync-id=*) SYNC_ID=${i##*=} opts=$opts" --sync-id=\"$SYNC_ID\"" ;; --on-changes) sync_on_changes=1 nolocks=1 ;; --no-locks) nolocks=1 ;; *) if [ $first == "0" ] then LogError "Unknown option '$i'" Usage fi ;; esac first=0 done # Remove leading space if there is one opts="${opts# *}" CheckEnvironment if [ $? == 0 ] then ## Here we set default options for quicksync tasks when no configuration file is provided. if [ $quick_sync -eq 2 ] then if [ "$SYNC_ID" == "" ] then SYNC_ID="quicksync task" fi # Let the possibility to initialize those values directly via command line like SOFT_DELETE_DAYS=60 ./osync.sh if [ "$MINIMUM_SPACE" == "" ] then MINIMUM_SPACE=1024 fi if [ "$CONFLICT_BACKUP_DAYS" == "" ] then CONFLICT_BACKUP_DAYS=30 fi if [ "$SOFT_DELETE_DAYS" == "" ] then SOFT_DELETE_DAYS=30 fi if [ "$RESUME_TRY" == "" ] then RESUME_TRY=1 fi if [ "$SOFT_MAX_EXEC_TIME" == "" ] then SOFT_MAX_EXEC_TIME=0 fi if [ "$HARD_MAX_EXEC_TIME" == "" ] then HARD_MAX_EXEC_TIME=0 fi MIN_WAIT=30 REMOTE_SYNC=no else ConfigFile="$1" LoadConfigFile "$ConfigFile" fi if [ "$LOGFILE" == "" ] then if [ -w /var/log ] then LOG_FILE=/var/log/osync_$SYNC_ID.log else LOG_FILE=./osync_$SYNC_ID.log fi else LOG_FILE="$LOGFILE" fi GetLocalOS InitLocalOSSettings Init GetRemoteOS InitRemoteOSSettings if [ $sync_on_changes -eq 1 ] then SyncOnChanges else DATE=$(date) Log "-------------------------------------------------------------" Log "$DRY_WARNING $DATE - $PROGRAM $PROGRAM_VERSION script begin." Log "-------------------------------------------------------------" Log "Sync task [$SYNC_ID] launched as $LOCAL_USER@$LOCAL_HOST (PID $SCRIPT_PID)" if [ $no_maxtime -eq 1 ] then SOFT_MAX_EXEC_TIME=0 HARD_MAX_EXEC_TIME=0 fi CheckMasterSlaveDirs CheckMinimumSpace if [ $? == 0 ] then RunBeforeHook Main if [ $? == 0 ] then SoftDelete fi RunAfterHook fi fi else LogError "Environment not suitable to run osync." exit 1 fi