Created attachment 10007 [details] Bash Script that reproduces the error +++ This bug was initially created as a clone of Bug #8020 +++ Although --number-ids is specified, when rsync is unable to resolve ACL entries to a user or group on OS X, we get an error: unpack_smb_acl: sys_acl_get_info(): Undefined error: 0 (0) And an exit status of 23. With --numeric-ids, we should not require lookup of user/group. This is the same issue as Bug #8020. That bug was fixed, but not for OS X. An old version of a patch for OS X exists here: http://help.bombich.com/discussions/questions/2248-warning-messages-from-rsync-307. I don't pretend to understand it, I'm only referencing it in case it may provide some ideas for implementing a new patch. Tested on 3.0.9 and 3.1.1pre1 ##### How to reproduce the problem (script is also attached) #!/bin/bash # create a test user that will be deleted dscl . -create /Users/_bb_test dscl . -create /Users/_bb_test UserShell /bin/bash dscl . -create /Users/_bb_test RealName "Backup Test User" dscl . -create /Users/_bb_test UniqueID 599 dscl . -create /Users/_bb_test PrimaryGroupID 99 dscl . -create /Users/_bb_test NFSHomeDirectory /Users/_bb_test # create a test group that will be deleted dseditgroup -o create _bb_test_group mkdir /tmp/rsync_acl_test cd /tmp/rsync_acl_test touch acl-test-2 chmod +a "_bb_test allow read" acl-test-2 chmod +a "_bb_test_group allow read" acl-test-2 mkdir acl-test-dir-2 chmod +a "_bb_test allow read" acl-test-dir-2 chmod +a "_bb_test_group allow read" acl-test-dir-2 touch acl-test-dir-2/my_file chmod +a "_bb_test allow read" acl-test-dir-2/my_file chmod +a "_bb_test_group allow read" acl-test-dir-2/my_file # delete the user and group so the ACL can not be looked up dscl . -delete /Users/_bb_test dscl . -delete /Groups/_bb_test_group # run the rsync with ACLs and --numeric /usr/local/bin/rsync -aA --numeric-ids /tmp/rsync_acl_test /tmp/rsync_acl_test_copy echo $? # output: #rsync: unpack_smb_acl: sys_acl_get_info(): Undefined error: 0 (0) #rsync: unpack_smb_acl: sys_acl_get_info(): Undefined error: 0 (0) #rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1122) [sender=3.0.9] #23