[lbackup-discussion] L-Backup Errors! That error occurs when rsync tries to set an ACE specifying a user that does not exist. Here's what happens: 1) Read ACE on source file --> on Mac OS X, the user or group of the ACE is stored using the user or group's UUID 2) Convert UUID to uid/gid using mbr_uuid_to_id, also store which type it is (e.g. user or group) 3) [transfer file] 4) Convert uid/gid to UUID using mbr_uid_to_uuid or mbr_gid_to_uuid 5) Set ACE on destination file

[henri]

> The server in question is backing up the contents of it's RAID drive, which is separate from the boot drive to an external backup drive. This has been a problem well before the 10.6.3 update. The server also backs up another server also running 10.6.3 that is bound to the same directory.

Okay thank you for this additional information.