Updated version attached below:
Jeffrey J. Kosowsky wrote at about 15:52:56 -0500 on Friday, December 12, 2008:
> The enclosed script (and a 1-line cmd.exe helper) cleanly and
> automatically sets up shadow copies, mounts them, and launches the
> rsync daemon without requiring any special configuration or changes to
> your existing (non-shadow) rsyncd.conf script. It also cleanly unwinds
> all the above when you are done rsyncing your files.
>
> As a result, you should now be able to back up any (and all) files
> that are locked under Windows such as registry files (e.g. ntuser.dat)
> and databases (e.g. Outlook).
>
> The script can easily be called directly from $Conf{DumpPreUserCmd}
> and $Conf{DumpPostUserCmd} -- see the script for examples in
> the comments.
>
> The script itself (which uses some hairy recursion to get around
> limitations in cygwin ssh, vshadow, and dosdev) is heavily documented.
>
> Enjoy and if you use it, please send me feedback, bug reports,
> enhancements, etc...
>
> Jeff
>
Changelog:
Version 0.2: First posted version
Version 0.21:
- Added USESHADOWS option to determine whether to fall back to
rsyncd without shadows if shadow setup fails (or optionally not
to even use shadows in the first place
- Eliminated need to explicitly wait for rsyncd to setup (check
rsync pid file instead)
- Fixed rsyncd_kill function so that it only kills daemons (and
the right one too)
- Added ability to set options for rsync
- Cleaned up code
- Changed name of routines to shadowmountrsync and shadowexeccmd,
respectively
-----------------------------------------------------------------------------------------------
#!/bin/bash
# Mountrsyncshadows
# Copyright Jeffrey J. Kosowsky December 2008
# Version 0.21
# Description: automagically sets up (and takes down) shadow copies,
# shadow mounts, and the rsyncd daemon to allow you to seamlessly
# rsync to shadow copies of all the active modules in your current
# rsyncd.conf file WITHOUT any configuration changes or added settings
# to your existing setup non-shadow copy rsyncd setup. In particular,
# the program determines which shadows to create based upon the
# modules in your existing /etc/rsyncd.conf combined with what mounts
# actually exist.
# Usage:
# mountrsynchadows
# Sets up shadow copies, mounts shadows, and launches rsync
# mountrsyncshadows -d
# Terminates rsync, kills shadow copies, unmounts, and cleans up
#
# If using as pre/post commands in BackupPC, try something like:
#$Conf{DumpPreUserCmd} =
# '$sshPath -q -x -l kosowsky $host /usr/local/bin/mountrsyncshadows';
#
# $Conf{DumpPostUserCmd} =
# '$sshPath -q -x -l kosowsky $host
/usr/local/bin/vshadow-scripts/mountrsyncshadows -d';
#
# NOTE: this doesn't make sense for the Restore commands since clearly
# shadow copies CANNOT be restored to since by definition they are
# read-only
#
# WARNING: This is beta software which has only been tested to work so
# far on my own XP sp2 setup in a limited number of situation. In
# particular, it may not work on other Windows version since the
# nature of shadow copy (and vshadow and dosdev) in particular has
# changed radically for Windows versions both prior to and post
# WinXP. Given the nature of shadow copy, it *should* (theoretically)
# not be capable of doing anything destructive to the source disk, so
# it's likely that the worse that would happen is that your backups
# would fail (or potentially be incomplete/corrupted). Feedback, bug
# reports, and enhancements are always welcome!!!
#
# NOTE: the companion 1-liner 'shadowexec.cmd' file MUST be in the
# same directory Also, both files need to be in the Administrators
# group and with group permissions +rx
#
# REQUIRES:
# vshadow.exe
# Available from Microsoft downloads (make sure you get the
# right version for your architecture!)
#
http://www.microsoft.com/downloads/details.aspx?FamilyID=0B4F56E4-0CCC-4626-826A-ED2C4C95C871&displaylang=en
# dosdev.exe
# Again available from Microsoft downloads (as part of their
# reporting tools). Also, be careful of the version since
# different verssions seem to have different command line
# interfaces. I obtained my copy from:
# http://www.ltr-data.se/files/dosdev.zip
#
# NOTE: The program recurses through this routine 3 times because of
# the limitations first of ssh and then of vshadow. An additional
# '0th' pass is used to terminate the shadow copy & clean up.
# In particular, cygwin ssh logins lack the authority to create shadow
# copies or set up dos devices since it is not a true authenticated
# user login. On the other hand, vshadow is quite crippled in XP since
# it cannot create shadow copies nor can they be easily
# mounted. Dosdev is necessary because cygwin does not (yet) allow
# direct mounting of shadow copy devices since they lie in the kernel
# namespace.
#
# Since the program recurses both under the login user and under the
# SYSTEM user (for ssh), you need to be attentive to permissions. The
# program tries to detect and log such errors, but in particular:
# vshadow, dosdev, this bash script (and its cmd.exe companion), the
# log & lock file, and the shadowdir should all be readable (and where
# appropriate writable & executable) by the Administrators group. Note also that
# the drive letter string ALL_DRIVELETTS can be restricted if you are
# likely to be mounting/unmounting temporary devices (like cds, dvds)
# requiring a fixed drive letter assignment during the rsync time. You
# do not need to restrict it for fixed drives (e.g. C:) since they are
# automatically avoided if present at the time of shadow creation.
#
# The recursion operates as follows:
# First, since the ssh login lacks the authority to create shadow
# copies or to set up dos devices, the program schedules an 'at' job
# (for the next minute) to recurse again through this routine. (If not
# launched from 'ssh' then for parallelism, the recursion is directly
# launched with cmd.exe).
#
# Then, 'vshadow' calls the routine a third time once the shadow copy
# has been set up to commplete the post-processing, including setting
# up device letters and mounting them and then starting the rsyncd
# daemon on an appropriately modified version of the original
# rsyncd.conf. This shadow -exec script needs a a 1-line helper bash
# cmd script since the -exec script can't take arguments and must be
# either a .cmd or .exe file. The shadow exec script (3rd pass) also
# works to keep the shadow copy alive (mimicking persistence) by
# launching the rsync daemon with the no-detach option.
#
# Finally, when the transfer is completed and rsyncd is killed, the
# whole recursion unwinds and everything gets cleaned up
# appropriately.
# Note that pass #2 which sets up the shadow copies (which is also
# visible as the 'at' job if under ssh) and pass #3 (which is the
# script that mounts the shadow copies and launches rsync) remain
# alive until rsyncd is terminated. Pass #1 which kicks off the
# recursion hangs around until either a setup error is detected or
# until the setup is completed with the launch of the rsync daemon, at
# which time it returns and signals the result to the calling
# process. In particular, this initial pass returns '0' on success and a
# positive error code [1-8] on error.
#
# Indeed, the easiest/cleanest/best way to unwind the recursions and
# cause everything to reset gracefully is to kill the final 'rsync'
# process for which everything else ends up waiting. The '-d' option
# first tries to clean up gracefully like this but if it fails then it
# uses brute force to kill rsyncd, delete mounts, shutdown shadow
# copies, and remove lock files.
#
# Given the complexity of the multiple recursions, the program has
# been instrumented with plentiful (but optional) logging turned on by
# setting the $LOG variable to the log file you want to use. Indeed,
# the logging is fun and instructive to watch ;)
#
# By setting $STRICT you can ensure that shadow creation will abort if
# an rsync process or shadow copy is already running. Otherwise, it
# will kill existing shadows and rsync processes. It's probably a good
# idea to keep it set unless you are sure that you won't be colliding
# with another shadow copy process. The downside is that if something
# is stuck, then the routine will abort (and optionally log the
# result) rather than forcing a clean up.
##############################################################################
##### Define variables
USESHADOWS=2 #0=no shadows, use straight rsync only;
#1=use shadows with rsync, error if shadows not available
#2=try to use shadows first, if not available use straight rsync
RSYNCDCONF=/etc/rsyncd.conf # Your original (non-shadow) version of rsyncd.conf
RSYNCDCONF_SHADOW=$SHADOWDIR/rsyncd.shadow.conf #Location for modified version
#of rsyncd.conf (auto-generated)
RSYNCDPID= #Should be set in rsyncd.conf file as "pid file" (override here)
PATH=/bin:/usr/bin:/usr/local/bin:/c/WINDOWS/System32
RSYNC=rsync
DOSDEV=dosdev
VSHADOW=vshadow
SHADOWDIR=/shadow #Directory where shadow mounts are set up
#MUST not be any dir where other things are mounted (e.g., / or /cygdrive)
#Note this counts as part of file name length so don't make path too long
SHADOWEXECCMD=shadowexec.cmd #Name of 1-liner helper script
#Must be in same directory as this script
STRICT=1 #Set '1' if you want strict checking of error conditions before
starting
#Specifically, won't start if 'lock' exists or 'rsync' already running
#or if shadows already exist (if $USESHADOWS > 0)
SHADOWLOCK=/var/run/shadow.pid #Name of shadow lock file
LOG=/var/log/shadow.log #Set if you want logging (advisable at least to start)
TIMEOUT=300 #Time in seconds 1st pass waits for setting up before timing out
SHORTTIMEOUT=10 #Time in seconds to wait for cleanup to finish & rsync to set up
#The following allow additional (optional) params to be passed to rsync daemon
RSYNCDADDRESS=
RSYNCDPORT=
RSYNCDBWLIMIT=
RSYNCDOTHER=
##############################################################################
##### Define some helper functions
# Relaunches current script (or optionally the command given in $@)
# via 'at' to get around $USERNAME=SYSTEM problem under ssh login
# where the shell lacks permsisions to run commmands like vshadow or
# dosdev
function at_relaunch {
local h m s wait command
if [ $# -eq 0 ] ; then
command=$( (cd -P $(dirname $0) && pwd ))/$(basename $0)
else
command=$@
fi
set -- $(date +"%H %M %S")
h=$((10#$1)) #Note explicitly use base 10 so that 08 and 09 not
interpreted as bad octal
m=$((10#$2 +1)) #Advance minutes by 1
s=$((10#$3))
wait=$((60 - $s))
[ $s -gt 55 ] && let "m += 1" "wait += 60" # Make sure >5 seconds left
[ $m -ge 60 ] && let "m %= 60" "h += 1" #Overflow minutes
let "h %= 24"
at $h:$m $(cygpath -w $(which bash.exe)) -c \"$command\" > /dev/null
return $wait
}
# Populate SHADOWMOUNT with the drive letters (including colon) that are
# both present in rsyncd.conf and that are actually mounted
function get_shadowmounts {
#Extract the drive letter from rsyncd.conf, converting to uppercase
local RSYNCMOUNTS=$(sed -ne "s%^[ \t]*path[ \t]*=[
\t]*/\(cygdrive/\)\?\([A-Za-z]\)\([ \t]*$\|[ \t]*#\|/\).*%\u\2%p" $RSYNCDCONF|
sort | uniq | sed -e "s|$|:|")
SHADOWMOUNT=()
for mount in $RSYNCMOUNTS ; do #Eliminate mounts that are not actually
present
[ -d $mount ] && SHADOWMOUNT=("${SHADOWMOUNT[@]}" "$mount")
done
}
# Populate DRIVELETS with *free* drive letters starting from Z
function get_driveletters {
local ALL_DRIVELETS="Z Y X W V U T S R Q P O N M L K J I H G F E D C B
A"
DRIVELETS=()
for letter in $ALL_DRIVELETS ; do
mount | egrep -q "^$letter:" \
|| DRIVELETS=("${DRIVELETS[@]}" "$letter")
[ ${#DRIVELETS[@]} -eq $1 ] && return
done
}
# Kill rsyncd process
function kill_rsyncd {
# Note we only want to kill rsync daemons that are bound to our rsync
pid
# file. In particular, we don't want to kill regular rsync processes
# or even rsync daemons with an alternative rsync pid file that may be
# associated with another conf file (and different port/address).
[ -z "$RSYNCDPID" ] && RSYNCDPID=$(sed -ne "s/[ ]*pid file[ ]*=[
]*\(.*[^ ]\)[ ]*\(#.*\|$\)/\1/p" $RSYNCDCONF)
[ -e "$RSYNCDPID" ] || return #No running rsyncd with our pid file
local PID=$(< "$RSYNCDPID") # Read in PID
if [ -n $PID ]; then
ps -e | grep -q "^[^0-9]*${PID}.*${RSYNC}$" && kill -HUP $PID
sleep 1
ps -e | grep -q "^[^0-9]*${PID}.*${RSYNC}$" && kill -KILL $PID
fi
[ -e "$RSYNCDPID" ] && rm -f "$RSYNCDPID" #Shouldn't be necessary...
}
# Delete shadows, unmount shadow mounts, and remove drive letters
function cleanup_shadows {
local shadowmounts letter
( echo Y | $VSHADOW -da ) > /dev/null 2>&1 #Delete shadow copies and as
a
#positive side effect kills shadow process and spawned routines
shadowmounts=$(mount | sed -ne "s|^\([A-Za-z]\): on $SHADOWDIR/[A-Za-z]
type.*|\1|p")
for letter in $shadowmounts ; do
umount -s $SHADOWDIR/$letter 2> /dev/null #Unmount
$DOSDEV "${letter}:" /D 2> /dev/nuul
# Note dosdev doesn't work from ssh due to permissions and probably
# not necessary after shadows killed, but good hygiene
done
}
#Clean up
function clean_up {
kill_rsyncd
[ $USESHADOWS -gt 0 ] && cleanup_shadows
rm -f $RSYNCDCONF_SHADOW $SHADOWLOCK
[ -n "$LOG" ] && echo "..Finished clean_up... $PASS" >> $LOG
}
##############################################################################
##### Start of main code
[ -n "$LOG" ] && echo -e "\n[$(date +"%d/%m/%y %H:%M:%S")]
[$PPID|$$][$USER|$USERNAME|$(id -un)|$(id -run)] $0 $*" >> $LOG #Log and
timestamp each pass
#NOTE: PPID=1 when coming in from 'at' or from 'cmd.exe
# We use this fact to prevent looping and determine where we are in
#the recursion
# Check permissions each time through since (potentially) different user context
# i.e. make sure vshadow, dosdev and shadowexec.cmd are accessible
SHADOWEXECCMD=$(cygpath -w $( (cd -P $(dirname $0) && pwd ))/$SHADOWEXECCMD)
if [ $USESHADOWS -gt 0 ] && !(which $VSHADOW && which $DOSDEV \
&& [ -x $SHADOWEXECCMD ] ) > /dev/null 2>&1 ; then
[ -n "$LOG" ] && echo -e "ERROR: Can't access '$VSHADOW' or '$DOSDEV'
or '${SHADOWEXECCMD//\\/\\\\}'...\n" >> $LOG
#Note we need to protect the \'s in SHADOWEXECCMD
if [ $PPID -eq 1 ]; then
echo -4 >| $SHADOWLOCK #Signal to calling routine
exit 4
elif [ $USESHADOWS -eq 1 ]; then
exit 4# Shadows required so unrecoverable error
else
USESHADOWS=0 # Default to not using shadows
fi
fi
### PASS=0: Clean_up/termination (just a single pass independent of the others)
if [ "$1" = "-d" ] ; then # Terminate & clean up
PASS="[Pass #0]"
[ -n "$LOG" ] && echo "***Terminating and cleaning up shadows, mounts,
and locks (PID=$$)...$PASS" >> $LOG
FORCE=1
if [ -e $SHADOWLOCK ]; then
SCRIPTPID=$(< $SHADOWLOCK)
if [ -n $SCRIPTPID ] && [ $SCRIPTPID -gt 0 ]; then
[ -n "$LOG" ] && echo -e "--Attempting to clean up
gracefully...$PASS" >> $LOG
ps -e | grep -q "^[^0-9]*$SCRIPTPID.*/usr/bin/bash$" &&
kill -HUP $SCRIPTPID
sleep 1
ps -e | grep -q "^[^0-9]*$SCRIPTPID.*/usr/bin/bash$" &&
kill -KILL $SCRIPTPID
for ((WAIT=1; WAIT <=SHORTTIMEOUT; WAIT++)) ; do
#Wait for unwinding recursion to clean up by itself
if [ ! -e "$SHADOWLOCK" ]; then #Successfully
cleaned up by itself
unset FORCE
break
fi
sleep 1
done
fi
fi
if [ -n "$FORCE" ] ; then
[ -n "$LOG" ] && echo -e "--Manually clean up...$PASS" >> $LOG
clean_up #Didn't clean up by unwinding recursion, so call
manually
fi
[ -n "$LOG" ] && echo -e "--Termination completed...$PASS\n" >> $LOG
exit 0
### PASS=1: Initial time through
elif [ $PPID -ne 1 ] ; then #Launch initial recursion & wait for setup to
complete
PASS="[Pass #1]"
[ -n "$LOG" ] && echo "***Initial pass through (PID=$$)...$PASS" >> $LOG
[ -z "$RSYNCDPID" ] && RSYNCDPID=$(sed -ne "s/[ ]*pid file[ ]*=[
]*\(.*[^ ]\)[ ]*\(#.*\|$\)/\1/p" $RSYNCDCONF)
#First do some tests...
if [ "$STRICT" = "1" ] ; then
if [ -e $SHADOWLOCK ] ; then #Lock file exists
[ -n "$LOG" ] && echo -e "ERROR: Lock file
exists...$PASS\n" >> $LOG
exit 1 # Lock file exists
elif [ -e $RSYNCDPID ] ; then #Rsync running
[ -n "$LOG" ] && echo -e "ERROR: Rsync daemon already
running...$PASS\n" >> $LOG
exit 2 # Rsync daemon already running
elif [ $USESHADOWS -gt 0 ] && \
! vshadow -q | grep -q "There are no shadow copies in
the system" ; then
[ -n "$LOG" ] && echo -e "ERROR: Active shadow copies
exist...$PASS\n" >> $LOG
exit 3 # Active shadow copies already exist
fi
fi
clean_up # Clean up no matter what - may be partially redundant but
good hygeine
touch $SHADOWLOCK
#Check permissions on files we call.
# Set up SHADOWDIR and check their permissions
if [ $USESHADOWS -gt 0 ] && \
! ( stat -c %A $0 | grep -q "^....r.x" && \
[ $(stat -c %G $0 ) = "Administrators" ] && \
stat -c %A $SHADOWEXECCMD | grep -q "^....r.x" && \
[ $(stat -c %G $SHADOWEXECCMD) = "Administrators" ] && \
mkdir -m 775 -p $SHADOWDIR && \
chown $USER.Administrators $SHADOWDIR $SHADOWLOCK $LOG
&& \
chmod g+rw $SHADOWLOCK $LOG ) ; then
[ -n "$LOG" ] && echo -e "ERROR: Permissions error with '$0' or
'$SHADOWEXECCMD' or '$SHADOWDIR' or '$SHADOWLOCK' or '$LOG'....$PASS\n" >> $LOG
rm $SHADOWLOCK #Not using shadows
if [ $USESHADOWS -eq 1 ]; then #Shadows required so exit with
error
exit 5 # Shadow permissions error
else
USESHADOWS=0 # Fall back to not using shadows
fi
fi
if [ $USESHADOWS -gt 0 ] ; then
if [ -n "$SSH_CLIENT" ] ; then
#Relaunch using 'at' if you come in via ssh ($USERNAME=SYSTEM)
#because then you won't have privileges to run vshadow and dosdev
at_relaunch #Recurse
RET=$?
[ -n "$LOG" ] && echo "--Relaunching as SYSTEM user via
'at' in $RET seconds...$PASS" >> $LOG
else #Just relaunch directly (for consistency with recursion
above)
cmd.exe /C $(cygpath -w $(which bash.exe)) -c "$0" &
[ -n "$LOG" ] && echo "--Relaunching via
'cmd.exe'...$PASS" >> $LOG
fi
[ -n "$LOG" ] && echo "--Initial pass going into background
waiting for setup to complete...$PASS" >> $LOG
while ((TIMEOUT--)) ; do #Wait for setup completion or timeout
[ -s "$SHADOWLOCK" ] && break
sleep 1
done
if [ -s "$SHADOWLOCK" ] ; then #Check to see if returned with
errors
RETURN=$((-$(< $SHADOWLOCK))) #Undo negative of error
codes
else
RETURN=8 #Timeout error
clean_up
fi
if [ $RETURN -ge 6 -a $USESHADOWS -eq 2 ] ; then
USESHADOWS=0 # Fall back to trying rsync without shadows
fi
fi
if [ $USESHADOWS -eq 0 ] ; then
for ((WAIT=1; WAIT <=SHORTTIMEOUT; WAIT++)) ; do
# Wait for any potential unwinding shadows to clean up
[ -e $SHADOWLOCK ] || break
sleep 1
done
[ -e $SHADOWLOCK -o -e $RSYNCDPID ] && clean_up # Just in
case...
$RSYNC --daemon --config=${RSYNCDCONF}
${RSYNCDADDRESS:+--address=$RSYNCDADDRESS} ${RSYNCDPORT:+--port=$RSYNCDPORT}
${RSYNCDBWLIMIT:+--bwlimit=$RSYNCDBWLIMIT} ${RSYNCDOTHER}
RETURN=$?
[ -n "$LOG" ] && echo "--Starting rsyncd daemon (WITHOUT shadow
mounts) in background...$PASS" >> $LOG
fi
if [ $RETURN -le 0 ] ; then #No error
for ((WAIT=1; WAIT <=SHORTTIMEOUT; WAIT++)) ; do # Wait for
rsync to set up
if [ -e "$RSYNCDPID" ]; then
[ -n "$LOG" ] && echo -e "..Rsyncd started
successfully (PID=$(< $RSYNCDPID))...$PASS\n" >> $LOG
exit 0 # Exit 0 on success
fi
sleep 1
done
[ -n "$LOG" ] && echo -n "--Rsyncd failed to start...$PASS\n"
>> $LOG
RETURN=9 # Rsyncd failed to start
fi
clean_up # Clean up on failure...
exit $RETURN # Return failure code
### PASS=3: Called by -exec command of vshadow
elif [ $PPID -eq 1 -a "$1" = "-e" ] ; then #Mount shadows & launch rsync
PASS="[Pass #3]"
[ -n "$LOG" ] && echo "**Running exec command spawned by vshadow
(PID=$$)...$PASS" >> $LOG
get_shadowmounts
#Create paired array of the drive letter and the windows shadow path
SHADOWPAIRS=( `$VSHADOW -q | sed -ne "s/\( *- Original Volume
name:.*\[\([A-Z]\):.*\)\| *- Shadow copy device name: */\2/p"` )
NUMSHADOWS=$((${#SHADOWPAIRS[@]}/2))
if [ $NUMSHADOWS -ne ${#SHADOWMOUNT[@]} ] ; then
[ -z "$LOG"] || echo -e "ERROR: Shadows created $NUMSHADOWS not
equal to shadows requested (${#SHADOWMOUNT[@]})...$PASS\n" >> $LOG
echo -6 >| $SHADOWLOCK
exit 6
fi
get_driveletters $NUMSHADOWS
[ -n "$LOG" ] && echo "..Drive letters=${DRIVELETS[@]} $PASS" >> $LOG
if [ $NUMSHADOWS -gt ${#DRIVELETS[@]} ] ; then
[ -n "$LOG" ] && echo -e "ERROR: Not enough free drive
letters...$PASS\n" >> $LOG
echo -7 >| $SHADOWLOCK
exit 7
fi
cp -f $RSYNCDCONF $RSYNCDCONF_SHADOW
[ -n "$LOG" ] && echo "..Shadow mounts= $PASS" >> $LOG
for (( index=0 ; index < $NUMSHADOWS; index+=1 )) ; do
# Create drive letter corresponding to shadow mount
$DOSDEV "${DRIVELETS[$index]}:" "${SHADOWPAIRS[2*$index+1]}"
# Mount drive letter
mount -f -s "${DRIVELETS[$index]}:"
$SHADOWDIR/${DRIVELETS[$index]}
[ -n "$LOG" ] && echo "
${DRIVELETS[$index]}:->${SHADOWPAIRS[2*$index]}: ${SHADOWPAIRS[2*$index+1]}"
>> $LOG
[ -n "$LOG" ] && (echo -en " " ; mount | grep
"^${DRIVELETS[$index]}:") >> $LOG
#Rewrite rsyncd.conf using appropriate shadow paths
sed -i -e "s%^\([ \t]*path[ \t]*=[
\t]*\)/\(cygdrive/\)\?${SHADOWPAIRS[2*$index]}\([ \t]*$\|[
\t]*#\|/\)%\1$SHADOWDIR/${DRIVELETS[$index]}\3%i" $RSYNCDCONF_SHADOW
done
kill_rsyncd #Should already be dead but kill again just in case...
[ -n "$LOG" ] && echo "--Starting rsyncd daemon (with shadow mounts)
and waiting for file transfer to complete...$PASS" >> $LOG
echo $$ >| $SHADOWLOCK #Put PID in lockfile & signal that setup
successfull
$RSYNC --daemon --no-detach --config=${RSYNCDCONF_SHADOW}
${RSYNCDADDRESS:+--address=$RSYNCDADDRESS} ${RSYNCDPORT:+--port=$RSYNCDPORT}
${RSYNCDBWLIMIT:+--bwlimit=$RSYNCDBWLIMIT} ${RSYNCDOTHER}
[ -n "$LOG" ] && echo "--Rsync terminated: exiting & returing control
to PASS=1...$PASS" >> $LOG
exit 0
### PASS=2: Called by at or cmd.exe from initial recursion
else #Determine shadow mounts and launch vshadow
PASS="[Pass #2]"
[ -n "$LOG" ] && echo "**Running inital shadow setup (PID=$$)...$PASS" >>
$LOG
get_shadowmounts
( echo Y | $VSHADOW -da ) > /dev/null 2>&1 #Delete old shadow copies
# This should be redundant, but just in case...
[ -n "$LOG" ] && echo "--Starting shadow copy and waiting for 'exec'
script to terminate...$PASS" >> $LOG
$VSHADOW -exec="$SHADOWEXECCMD" ${SHADOWMOUNT[@]} > /dev/null 2>&1
[ -n "$LOG" ] && echo "--Vshadow terminated: cleaning up...$PASS" >>
$LOG
#NOTE: vshadow doesn't finish until script $SHADOWEXECCMD script
completed
clean_up # Should already be mostly cleaned up by unwinding of
recursion
[ -n "$LOG" ] && echo -e "--Done! Clean up completed...$PASS\n" >> $LOG
exit 0
fi
exit 9 #Shouldn't get here...
-----------------------------------------------------------------------------------------------
REM Shadowexec.cmd
REM Copyright Jeffrey J. Kosowsky December 2008
REM Version 0.2
REM This cmd.exe script file should be in the same directory as the
REM bash script: shadowmountrsync
@echo OFF
C:\cygwin\bin\bash.exe -c "$(cygpath.exe '%~p0\shadowmountrsync') -e"
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