Use separate state directory for timer script

After a backup is completed, update a state directory outside the backup
directory with the current symlinks and timestamp files.  Update the
timer script to use this state directory instead of the backup directory
to avoid spinning up the backup drives if no backup is needed.

Move the client_lockdir out of the backup directory as well.

configs/server/burp.conf

@@ -5,6 +5,7 @@ port = 4971
status_port = 4972
directory = /var/spool/burp
clientconfdir = /etc/burp/clientconfdir
client_lockdir=/var/run/burp
pidfile = /var/run/burp.server.pid
hardlinked_archive = 0
working_dir_recovery_method = delete
@@ -128,6 +129,7 @@ timer_arg = Sat,Sun,00,01,02,03,04,05,06,07,08,17,18,19,20,21,22,23
# minutes. Requires notify_failure_script to be set above.
#server_script_pre_notify = 0
#server_script_post = 
server_script_post = /etc/burp/update_state_dir
#server_script_post_arg = 
#server_script_post_arg = 
#server_script_post_run_on_fail=0

configs/server/timer_script

@@ -12,11 +12,15 @@ reserved2="$1" ; shift
interval="$1" ; shift
timestamp="$current/timestamp"

state_dir="/var/run/burp/state"
current="${current/$storage_dir/$state_dir}"
timestamp="${timestamp/$storage_dir/$state_dir}"

# A 'backup' file placed in the storage directory tells this script that
# a backup needs to be done right now.
# This gives the 'server initiates a manual backup' feature.

manual_file="$storage_dir/$client/backup"
manual_file="$state_dir/$client/backup"
if [ -f "$manual_file" ] ; then
	echo "Found $manual_file"
	echo "Do a backup of $client now"

configs/server/update_state_dir

@@ -0,0 +1,39 @@
#!/bin/bash

echo "Running update_state_dir script: $@"

preorpost="$1" ; shift
action="$1" ; shift  # either "backupphase1" or "backupphase1timed"
client="$1" ; shift
success="$1" ; shift
timer="$1" ; shift

usage()
{
   echo "usage: $prog post [backupphase1|backupphase1timed] <client> [0|1] [0|1]" 1>&2
   echo "The third argument is whether the backup succeeded (0 for ok)" 1>&2
   echo "The fourth argument is whether the timer script allowed a backup (0 for ok)" 1>&2
   exit 1
}

if   [ -z "$preorpost" -o -z "$action" -o -z "$client" -o -z "$success" -o -z "timer" ] || [ "$preorpost" != "post" ]
then
   usage
fi

if [ "$action" != "backupphase1" -a "$action" != "backupphase1timed" ] ; then
   # It was not a backup that ran.
   exit 0
fi

if [ "$action" = "backupphase1timed" ] && [ "$timer" != "0" ] ; then
   # Server did not allow timed backup to be attempted.
   exit 0
fi

if [ "$success" != "0" ] ; then
   # Backup failed - do not run the offsite backup.
   exit 0
fi

rsync -av --include '/*/' --include '/*/*/' --include '/*/current' --include '/*/*/timestamp' --include '/*/*/backup' --exclude '*' /media/freeagent/burp/ /var/run/burp/state