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osync/osync.sh

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#!/usr/bin/env bash
PROGRAM="Osync" # Rsync based two way sync engine with fault tolerance
AUTHOR="(L) 2013-2014 by Orsiris \"Ozy\" de Jong"
CONTACT="http://www.netpower.fr/osync - ozy@netpower.fr"
PROGRAM_VERSION=0.99RC3
PROGRAM_BUILD=2705201401
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
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 /dev/shm ]
then
RUN_DIR=/dev/shm
elif [ -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
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 TrapUsr1
{
echo "Still doing stuff"
}
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
SendAlert
UnlockDirectories
CleanUp
LogError "Osync finished with errros."
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 [ "$quick_sync" == "2" ]
then
Log "Current task is a quicksync task. Will not send any alert."
return 0
fi
cat "$LOG_FILE" | gzip -9 > $RUN_DIR/osync_lastlog.gz
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 $RUN_DIR/osync_lastlog.gz
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 $RUN_DIR/osync_lastlog.gz -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
$(type -p sendemail) -f $SENDER_MAIL -t $DESTINATION_MAILS -u "Backup alert for $BACKUP_ID" -m "$MAIL_ALERT_MSG" -s $SMTP_SERVER -o username $SMTP_USER -p password $SMTP_PASSWORD > /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 $RUN_DIR/osync_lastlog.gz ]
then
rm $RUN_DIR/osync_lastlog.gz
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"*)
LogError "Cannot connect to remote system."
exit 1
;;
*)
LogError "Running on remote >> $REMOTE_OS_VAR << not supported. Please report to the author."
exit 1
esac
LogDebug "Remote OS: [$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 $3 equals 0.
function WaitForTaskCompletion
{
soft_alert=0
SECONDS_BEGIN=$SECONDS
if [ "$LOCAL_OS" == "msys" ]
then
PROCESS_TEST_CMD="ps -a | awk '{\$1=\$1}\$1' | awk '{print \$1}' | grep $1"
else
PROCESS_TEST_CMD="ps -p$1"
fi
while eval $PROCESS_TEST_CMD > /dev/null
do
Spinner
EXEC_TIME=$(($SECONDS - $SECONDS_BEGIN))
if [ $((($EXEC_TIME + 1) % $KEEP_LOGGING)) -eq 0 ]
then
Log "Current task still running."
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 1
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 $3 equals 0.
function WaitForCompletion
{
soft_alert=0
if [ "$LOCAL_OS" == "msys" ]
then
PROCESS_TEST="ps -a | awk '{\$1=\$1}\$1' | awk '{print \$1}' | grep $1"
else
PROCESS_TEST="ps -p$1"
fi
while eval $PROCESS_TEST > /dev/null
do
Spinner
if [ $((($SECONDS + 1) % $KEEP_LOGGING)) -eq 0 ]
then
Log "Current task still running."
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 1
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
$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
$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 [ $remote_3rd_party_success -ne 1 ]
then
LogError "No remote 3rd party host responded to ping. No internet ?"
exit 1
fi
fi
}
function CreateOsyncDirs
{
if ! [ -d "$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\"" &
child_pid=$!
WaitForTaskCompletion $child_pid 0 1800
else
if ! [ -d "$SLAVE_STATE_DIR" ]; then mkdir -p "$SLAVE_STATE_DIR"; fi
fi
if [ $? != 0 ]
then
LogError "Cannot create slave replica state dir [$SLAVE_STATE_DIR]."
exit 1
fi
}
function CheckMasterSlaveDirs
{
if ! [ -d "$MASTER_SYNC_DIR" ]
then
if [ "$CREATE_DIRS" == "yes" ]
then
mkdir -p "$MASTER_SYNC_DIR"
if [ $? != 0 ]
then
LogError "Cannot create master directory [$MASTER_SYNC_DIR]."
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"\" &
child_pid=$!
WaitForTaskCompletion $child_pid 0 1800
if [ $? != 0 ]
then
LogError "Cannot create slave directory [$SLAVE_SYNC_DIR]."
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
{
OLD_IFS=$IFS
IFS=$PATH_SEPARATOR_CHAR
for excludedir in $RSYNC_EXCLUDE_PATTERN
do
if [ "$RSYNC_EXCLUDE" == "" ]
then
RSYNC_EXCLUDE="--exclude=\"$excludedir\""
else
RSYNC_EXCLUDE="$RSYNC_EXCLUDE --exclude=\"$excludedir\""
fi
done
IFS=$OLD_IFS
}
function RsyncExcludeFrom
{
if [ ! $RSYNC_EXCLUDE_FROM == "" ] && [ -e $RSYNC_EXCLUDE_FROM ]
then
## Check if the exclude list has a full path, and if not, add the config file path if there is one
if [ "$(basename $RSYNC_EXCLUDE_FROM)" == "$RSYNC_EXCLUDE_FROM" ]
then
$RSYNC_EXCLUDE_FROM=$(dirname $cfgfile)/$RSYNC_EXCLUDE_FROM
fi
RSYNC_EXCLUDE="$RSYNC_EXCLUDE --exclude-from=\"$RSYNC_EXCLUDE_FROM\""
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\"" &
child_pid=$!
WaitForTaskCompletion $child_pid 0 1800
else
if [ -f "$SLAVE_LOCK" ];then rm "$SLAVE_LOCK"; fi
fi
if [ $? != 0 ]
then
LogError "Could not unlock slave replica."
else
Log "Removed slave replica lock."
fi
if [ -f "$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): 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/$1-tree-after-$SYNC_ID" ]
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$2\" \"$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$2\" || : > \"$MASTER_STATE_DIR/$1$4\""
fi
LogDebug "CMD: $cmd"
eval $cmd
return $?
else
touch "$MASTER_STATE_DIR/$1$4"
return $?
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 $2 replica succeded."
return 0
fi
}
# delete_local(replica dir, delete file list, delete dir)
function _delete_local
{
## On every run, check wheter the next item is already deleted because it's included in a directory already deleted
previous_file=""
OLD_IFS=$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 [ $dryrun -ne 1 ]
then
mv "$REPLICA_DIR$files" "$REPLICA_DIR$3"
if [ $? != 0 ]
then
LogError "Cannot move $REPLICA_DIR$files to deletion directory."
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"
fi
fi
fi
previous_file="$files"
fi
done
IFS=$OLD_IFS
}
# delete_remote(replica dir, delete file list, delete dir)
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"
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")" '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
}
## On every run, check wheter the next item is already deleted because it's included in a directory already deleted
previous_file=""
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
$COMMAND_SUDO mv "$REPLICA_DIR$files" "$REPLICA_DIR$DELETE_DIR"
if [ $? != 0 ]
then
LogError "Cannot move $REPLICA_DIR$files to deletion directory."
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"
fi
fi
fi
previous_file="$files"
fi
done
ENDSSH
## Need to add a trivial sleep time to give ssh time to log to local file
sleep 5
exit $?
}
# delete_propagation(replica name, deleted_list_filename)
# 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" &
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" &
else
_delete_local "$REPLICA_DIR" "master$2" "$DELETE_DIR" &
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"
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"
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" ]
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"
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"
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" ] && [ $CONFLICT_BACKUP_DAYS -ne 0 ]
then
if [ -d "$MASTER_SYNC_DIR$MASTER_BACKUP_DIR" ]
then
if [ $dryrun -eq 1 ]
then
Log "Listing backups older than $CONFLICT_BACKUP_DAYS days on master replica. Won't remove anything."
if [ $verbose -eq 1 ]
then
$FIND_CMD "$MASTER_SYNC_DIR$MASTER_BACKUP_DIR/" -ctime +$CONFLICT_BACKUP_DAYS &
else
$FIND_CMD "$MASTER_SYNC_DIR$MASTER_BACKUP_DIR/" -ctime +$CONFLICT_BACKUP_DAYS > /dev/null &
fi
else
Log "Removing backups older than $CONFLICT_BACKUP_DAYS days on master replica."
$FIND_CMD "$MASTER_SYNC_DIR$MASTER_BACKUP_DIR/" -ctime +$CONFLICT_BACKUP_DAYS -exec rm -rf '{}' \; &
fi
child_pid=$!
WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME 0
retval=$?
if [ $retval -ne 0 ]
then
LogError "Error while executing conflict backup cleanup on master replica."
else
Log "Conflict backup cleanup complete on master replica."
fi
elif [ -d "$MASTER_SYNC_DIR$MASTER_BACKUP_DIR" ] && ! [ -w "$MASTER_SYNC_DIR$MASTER_BACKUP_DIR" ]
then
LogError "Warning: Master replica conflict backup dir [$MASTER_SYNC_DIR$MASTER_BACKUP_DIR] isn't writable. Cannot clean old files."
fi
if [ "$REMOTE_SYNC" == "yes" ]
then
CheckConnectivity3rdPartyHosts
CheckConnectivityRemoteHost
if [ $dryrun -eq 1 ]
then
Log "Listing backups older than $CONFLICT_BACKUP_DAYS days on slave replica. Won't remove anything."
eval "$SSH_CMD \"if [ -w \\\"$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR\\\" ]; then $COMMAND_SUDO $REMOTE_FIND_CMD \\\"$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR/\\\" -ctime +$CONFLICT_BACKUP_DAYS; fi\""
else
Log "Removing backups older than $CONFLICT_BACKUP_DAYS days on remote slave replica."
eval "$SSH_CMD \"if [ -w \\\"$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR\\\" ]; then $COMMAND_SUDO $REMOTE_FIND_CMD \\\"$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR/\\\" -ctime +$CONFLICT_BACKUP_DAYS -exec rm -rf '{}' \;; fi\""
fi
child_pid=$!
WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME 0
retval=$?
if [ $retval -ne 0 ]
then
LogError "Error while executing conflict backup cleanup on slave replica."
else
Log "Conflict backup cleanup complete on slave replica."
fi
else
if [ -w "$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR" ]
then
if [ $dryrun -eq 1 ]
then
Log "Listing backups older than $CONFLICT_BACKUP_DAYS days on slave replica. Won't remove anything."
$FIND_CMD "$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR/" -ctime +$CONFLICT_BACKUP_DAYS
else
Log "Removing backups older than $CONFLICT_BACKUP_DAYS days on slave replica."
$FIND_CMD "$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR/" -ctime +$CONFLICT_BACKUP_DAYS -exec rm -rf '{}' \;
fi
child_pid=$!
WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME 0
retval=$?
if [ $retval -ne 0 ]
then
LogError "Error while executing conflict backup cleanup on slave replica."
else
Log "Conflict backup cleanup complete on slave replica."
fi
elif [ -d "$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR" ] && ! [ -w "$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR" ]
then
LogError "Warning: Slave replica conflict backup dir [$SLAVE_SYNC_DIR$SLAVE_BACKUP_DIR] isn't writable. Cannot clean old files."
fi
fi
fi
if [ "$SOFT_DELETE" != "no" ] && [ $SOFT_DELETE_DAYS -ne 0 ]
then
if [ -d "$MASTER_SYNC_DIR$MASTER_DELETE_DIR" ]
then
if [ $dryrun -eq 1 ]
then
Log "Listing soft deleted items older than $SOFT_DELETE_DAYS days on master replica. Won't remove anything."
$FIND_CMD "$MASTER_SYNC_DIR$MASTER_DELETE_DIR/" -ctime +$SOFT_DELETE_DAYS
else
Log "Removing soft deleted items older than $SOFT_DELETE_DAYS days on master replica."
$FIND_CMD "$MASTER_SYNC_DIR$MASTER_DELETE_DIR/" -ctime +$SOFT_DELETE_DAYS -exec rm -rf '{}' \;
fi
child_pid=$!
WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME 0
retval=$?
if [ $retval -ne 0 ]
then
LogError "Error while executing soft delete cleanup on master replica."
else
Log "Soft delete cleanup complete on master replica."
fi
elif [ -d "$MASTER_SYNC_DIR$MASTER_DELETE_DIR" ] && ! [ -w "$MASTER_SYNC_DIR$MASTER_DELETE_DIR" ]
then
LogError "Warning: Master replica deletion backup dir [$MASTER_SYNC_DIR$MASTER_DELETE_DIR] isn't writable. Cannot clean old files."
fi
if [ "$REMOTE_SYNC" == "yes" ]
then
CheckConnectivity3rdPartyHosts
CheckConnectivityRemoteHost
if [ $dryrun -eq 1 ]
then
Log "Listing soft deleted items older than $SOFT_DELETE_DAYS days on slave replica. Won't remove anything."
eval "$SSH_CMD \"if [ -w \\\"$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR\\\" ]; then $COMMAND_SUDO $REMOTE_FIND_CMD \\\"$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR/\\\" -ctime +$SOFT_DELETE_DAYS; fi\""
else
Log "Removing soft deleted items older than $SOFT_DELETE_DAYS days on remote slave replica."
eval "$SSH_CMD \"if [ -w \\\"$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR\\\" ]; then $COMMAND_SUDO $REMOTE_FIND_CMD \\\"$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR/\\\" -ctime +$SOFT_DELETE_DAYS -exec rm -rf '{}' \;; fi\""
fi
child_pid=$!
WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME 0
retval=$?
if [ $retval -ne 0 ]
then
LogError "Error while executing soft delete cleanup on slave replica."
else
Log "Soft delete cleanup complete on slave replica."
fi
else
if [ -w "$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR" ]
then
if [ $dryrun -eq 1 ]
then
Log "Listing soft deleted items older than $SOFT_DELETE_DAYS days on slave replica. Won't remove anything."
$FIND_CMD "$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR/" -ctime +$SOFT_DELETE_DAYS
else
Log "Removing soft deleted items older than $SOFT_DELETE_DAYS days on slave replica."
$FIND_CMD "$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR/" -ctime +$SOFT_DELETE_DAYS -exec rm -rf '{}' \;
fi
child_pid=$!
WaitForCompletion $child_pid $SOFT_MAX_EXEC_TIME 0
retval=$?
if [ $retval -ne 0 ]
then
LogError "Error while executing soft delete cleanup on slave replica."
else
Log "Soft delete cleanup complete on slave replica."
fi
elif [ -d "$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR" ] && ! [ -w "$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR" ]
then
LogError "Warning: Slave replica deletion backup dir [$SLAVE_SYNC_DIR$SLAVE_DELETE_DIR] isn't writable. Cannot clean old files."
fi
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} $?' ERR
fi
if [ "$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
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=${SLAVE_SYNC_DIR#ssh://*}
# remove everything after '@'
_first_part=${uri%@*}
REMOTE_USER=${_first_part%;*}
#fingerprint=${_first_part#*fingerprint=}
if [ "$SSH_RSA_PRIVATE_KEY" == "" ]
then
SSH_RSA_PRIVATE_KEY=~/.ssh/id_rsa
fi
# remove everything before '@'
_last_part=${uri#*@}
_last_part2=${_last_part%%/*}
# remove last part if no port defined
REMOTE_HOST=${_last_part2%%:*}
if [[ "$_last_part2" == *":"* ]]
then
REMOTE_PORT=${_last_part2##*:}
else
REMOTE_PORT=22
fi
SLAVE_SYNC_DIR=${_last_part#*/}
fi
## Make sure there is only one trailing slash on path
MASTER_SYNC_DIR="${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"
## 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=$RSYNC_ARGS" -L"
fi
if [ "$PRESERVE_HARDLINKS" == "yes" ]
then
RSYNC_ARGS=$RSYNC_ARGS" -H"
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
## 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$dry_suffix"
DELETED_LIST_FILENAME="-deleted-list$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$dry_suffix"
## Sync function actions (0-9)
SYNC_ACTION=(
'master-replica-tree'
'slave-replica-tree'
'master-deleted-list'
'slave-deleted-list'
'update-master-replica'
'update-slave-replica'
'delete-propagation-slave'
'delete-propagation-master'
'master-replica-tree-after'
'slave-replica-tree-after'
'sync.success'
)
}
function InitLocalOSSettings
{
## If running Msys, find command of windows is used instead of msys one
if [ "$LOCAL_OS" == "msys" ]
then
FIND_CMD=$(dirname $BASH)/find
else
FIND_CMD=find
fi
## Stat command has different syntax on Linux and FreeBSD/MacOSX
if [ "$LOCAL_OS" == "MacOSX" ] || [ "$LOCAL_OS" == "BSD" ]
then
STAT_CMD="stat -f \"%Sm\""
else
STAT_CMD="stat --format %y"
fi
## Ping command has different syntax on Msys and others
if [ "$LOCAL_OS" == "msys" ]
then
PING_CMD="ping -n 2"
else
PING_CMD="ping -c 2 -i .2"
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 $CONTACT
echo ""
echo "You may use Osync with a full blown configuration file, or use its default options for quick command line sync."
echo "Usage: osync /path/to/config/file [OPTIONS]"
echo "or osync --master=/path/to/master/replica --slave=/path/to/slave/replica [OPTIONS] [QUICKSYNC OPTIONS]"
echo "or osync --master=/path/to/master/replica --slave=ssh://backupuser@remotehost.com[:portnumber]//path/to/slave/replica [OPTIONS] [QUICKSYNC OPTIONS]"
echo ""
echo "[OPTIONS]"
echo "--dry Will run osync without actually doing anything; just testing"
echo "--silent Will run osync without any output to stdout, used for cron jobs"
echo "--verbose Increases output"
echo "--stats Adds transfer statistics"
echo "--no-maxtime Disables any soft and hard execution time checks"
echo "--force-unlock Will override any existing active or dead locks on master and slave replica"
echo "--on-changes Will launch a sync as soon as there is some file activity on master replica"
echo ""
echo "[QUICKSYNC OPTIONS]"
echo "--master=\"\" Master replica path. Will contain state and backup directory (is mandatory)."
echo "--slave=\"\" Local or remote slave replica path. Can be a ssh uri like ssh://user@host.com:22//path/to/slave/replica (is mandatory)."
echo "--rsakey=\"\" Alternative path to rsa private key for ssh connection to slave replica"
echo "--sync-id=\"\" Optional task-id to identify this synchronization task when using multiple slaves."
exit 128
}
function SyncOnChanges
{
if ! type -p inotifywait > /dev/null 2>&1
then
LogError "No inotifywait command found. Cannot monitor changes."
exit 1
fi
Log "#### Running Osync in file monitor mode."
while true
do
if [ "$ConfigFile" != "" ]
then
cmd="bash $osync_cmd \"$ConfigFile\" $opts --no-locks"
else
cmd="bash $osync_cmd $opts --no-locks"
fi
eval $cmd
if [ $? != 0 ]
then
LogError "osync child exited with error."
exit 1
fi
Log "#### Monitoring now."
inotifywait --exclude $OSYNC_DIR $RSYNC_EXCLUDE -qq -r -e create -e modify -e delete -e move -e attrib "$MASTER_SYNC_DIR" &
sub_pid=$!
wait $sub_pid
Log "#### Changes detected, waiting $MIN_WAIT seconds before running next sync."
sleep $MIN_WAIT
done
}
# Comand line argument flags
dryrun=0
silent=0
verbose=0
stats=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 [ $# -eq 0 ]
then
Usage
fi
for i in "$@"
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=$opts" --stats"
;;
--force-unlock)
force_unlock=1
opts=$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=\"$SYNC_ID\""
;;
--on-changes)
sync_on_changes=1
;;
--no-locks)
nolocks=1
;;
esac
done
# Remove leading space if there is one
opts="${opts# *}"
GetLocalOS
InitLocalOSSettings
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
MINIMUM_SPACE=1024
REMOTE_SYNC=no
CONFLICT_BACKUP_DAYS=30
SOFT_DELETE_DAYS=30
RESUME_TRY=1
MIN_WAIT=30
else
ConfigFile="$1"
LoadConfigFile "$ConfigFile"
fi
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
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