Thanks n8 for writing Backup Bouncer! It really helped to make Arq backup and restore things correctly.

RTFM!

–
10.5.8 Server output

./bbouncer verify -d /Volumes/Src/ /Volumes/Dst/
Verifying: basic-permissions … ok (Critical)
Verifying: timestamps … ok (Critical)
Verifying: symlinks … ok (Critical)
Verifying: symlink-ownership … ok
Verifying: hardlinks … ok (Important)
Verifying: resource-forks …
Sub-test: on files … ok (Critical)
Sub-test: on hardlinked files … ok (Important)
Verifying: finder-flags … ok (Critical)
Verifying: finder-locks … ok
Verifying: creation-date … ok
Verifying: bsd-flags … ok
Verifying: extended-attrs …
Sub-test: on files … ok (Important)
Sub-test: on directories … ok (Important)
Sub-test: on symlinks … ok
Verifying: access-control-lists …
Sub-test: on files … ok (Important)
Sub-test: on dirs … ok (Important)
Verifying: fifo … ok
Verifying: devices … ok
Verifying: combo-tests …
Sub-test: xattrs + rsrc forks … ok
Sub-test: lots of metadata … ok

–

10.6.2 Output

./bbouncer verify -d /Volumes/src /Volumes/dst/
Verifying: basic-permissions … ok (Critical)
Verifying: timestamps … ok (Critical)
Verifying: symlinks … ok (Critical)
Verifying: symlink-ownership … ok
Verifying: hardlinks … ok (Important)
Verifying: resource-forks …
Sub-test: on files … ok (Critical)
Sub-test: on hardlinked files … ok (Important)
Verifying: finder-flags … ok (Critical)
Verifying: finder-locks … ok
Verifying: creation-date … FAIL
Verifying: bsd-flags … ok
Verifying: extended-attrs …
Sub-test: on files … ok (Important)
Sub-test: on directories … ok (Important)
Sub-test: on symlinks … ok
Verifying: access-control-lists …
Sub-test: on files … ok (Important)
Sub-test: on dirs … ok (Important)
Verifying: fifo … ok
Verifying: devices … ok
Verifying: combo-tests …
Sub-test: xattrs + rsrc forks … ok
Sub-test: lots of metadata … ok

I don’t have a Snow Leopard machine yet but I will within the next week or so. Once I have that set up I’ll update BB right away.

is there a version witch runs on 10.6 aka snow leopard?
I want to test cp, the new finder, rsync (built-in version), rsync (with patches)

When i run make i get the following errors:

computername:backup-bouncer-0.1.3 username$ make
cd util && make
cc -Wall xattr-util.c -o xattr-util
xattr-util.c: In function ‘main’:
xattr-util.c:107: warning: unused variable ‘value’
cc -Wall hardlink-util.c -o hardlink-util
(cd ctool-1.2.3; make)
cc -c safe_string.c
cc -c ctool.c
ctool.c: In function ‘process_file’:
ctool.c:412: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long unsigned int’
ctool.c: In function ‘checksum_section’:
ctool.c:524: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 5 has type ‘uint32_t’
ctool.c:524: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 6 has type ‘uint32_t’
ctool.c: In function ‘print_stats’:
ctool.c:692: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘dev_t’
ctool.c:693: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘__darwin_ino64_t’
ctool.c:698: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 4 has type ‘int’
ctool.c:699: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘int’
ctool.c:719: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘uid_t’
ctool.c:720: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘gid_t’
ctool.c:722: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘dev_t’
ctool.c:753: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘blksize_t’
ctool.c:754: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘__uint32_t’
ctool.c:755: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘__uint32_t’
ctool.c:784:52: error: macro “curl_easy_setopt” requires 3 arguments, but only 2 given
make[2]: *** [ctool.o] Error 1
make[1]: *** [all] Error 2
make: *** [all] Error 2

is there already some knowledge if these test cases are sufficient for testing the reliability of backup tools for use under Snow Leopard? For example, there are compressed executables now [1]. Does this fact or any other potential changes need special attention?

Any feedback appreciated.

[1] http://arstechnica.com/apple/reviews/2009/08/mac-os-x-10-6.ars/3

Unfortunately, the “lots of metadata” test can fail for lots of reasons — a copier can fail because it totally fails to preserve one or many metadata items, or it can also fail because it locks the destination file too early. I’m not sure how to communicate this result to the user in a useful way.

As for the inability to do a perfect duplication, it’s interesting, but not alarming IMHO. I wouldn’t expect the user or the system to care about the creation date of symlinks. I’ll consider adding a test for it just for the sake of completeness.

Thanks for the interesting feedback!

[n8gray@golux]% ls -lo README
-rw-r--r--  1 n8gray  staff  - 5020 Jun  9 12:49 README
[n8gray@golux]% sudo ls -lo README
-rw-r--r--  1 n8gray  5020 Jun  9 12:49 README

The “-” in the regular user output shows the BSD flags. So my test works as a regular user but not as root. Changing the command to ls -ldO fixes the problem. Thanks!