"/usr/local/bin/xdelta3" -e -s "/var/www/html/cc5983/offline/development/20080528-data/temp/incrementals/4/vledev_20080708_10_59-20080708-1100/moodle.xml" "/var/www/html/cc5983/offline/development/20080528-data/temp/incrementals/4/vledev_20080708_10_59-20080708-1104/moodle.xml" "/var/www/html/cc5983/offline/development/20080528-data/temp/0a8e62a4ac358b757984515f9879e3c8/files/moodle.xml.diff"

• line 112 of lib/xdelta.class.php: call to debugging()
• line 37 of backup/incremental_backuplib.php: call to xdelta->create_diff()
• line 101 of backup/incremental_backuplib.php: call to create_incremental()
• line 3427 of backup/backuplib.php: call to generate_incrementals()
• line 60 of backup/backup_execute.html: call to backup_execute()
• line 136 of backup/backup.php: call to include_once()

126

• line 129 of lib/xdelta.class.php: call to debugging()
• line 37 of backup/incremental_backuplib.php: call to xdelta->create_diff()
• line 101 of backup/incremental_backuplib.php: call to create_incremental()
• line 3427 of backup/backuplib.php: call to generate_incrementals()
• line 60 of backup/backup_execute.html: call to backup_execute()
• line 136 of backup/backup.php: call to include_once()

xdelta Object
(
[patha] => /var/www/html/cc5983/offline/development/20080528-data/temp/incrementals/4/vledev_20080708_10_59-20080708-1100
[pathb] => /var/www/html/cc5983/offline/development/20080528-data/temp/incrementals/4/vledev_20080708_10_59-20080708-1104
[treea] => Array
(
[/course_files] => directory
[/moddata] => directory
[/moddata/forum] => directory
[/moodle.xml] => bda5165e34c1ffa1b3f15a32f2bebe60
[/site_files] => directory
[/user_files] => directory
[/user_files/0] => directory
[/user_files/0/2] => directory
)

[treeb] => Array
(
[/course_files] => directory
[/moddata] => directory
[/moddata/forum] => directory
[/moodle.xml] => 75d805de48caa2398581ebe7de7cf53a
[/site_files] => directory
[/user_files] => directory
[/user_files/0] => directory
[/user_files/0/2] => directory
)

[version] => 1
[error] => Fail
)

Creating an incremental backup on linux with xdelta 3 I got the following error

XDELTA diff failed!!- olddir:/var/www/html/cc5983/offline/development/20080528-data/temp/incrementals/4/vledev_20080708_10_59-20080708-1100
Newdir:/var/www/html/cc5983/offline/development/20080528-data/temp/incrementals/4/vledev_20080708_10_59-20080708-1104
Backuppath:/var/www/html/cc5983/offline/development/20080528-data/4/backupdata/incrementals/995e6284c28296cf1b2420ceb760fd73-c43fbef58bcd735e504147d767146a16.zip
Stack trace:

• line 1651 of lib/deprecatedlib.php: call to debugging()
• line 40 of backup/incremental_backuplib.php: call to error()
• line 101 of backup/incremental_backuplib.php: call to create_incremental()
• line 3427 of backup/backuplib.php: call to generate_incrementals()
• line 60 of backup/backup_execute.html: call to backup_execute()
• line 136 of backup/backup.php: call to include_once()