Am 2008-01-19 um 01:37 schrieb Moritz Heckscher:
3) To help with the checking/comparing, someone else built a little
tool. It not only creates a collection of test files but can also
compare the original and transferred versions afterwards:
<http://www.n8gray.org/blog/2007/04/27/introducing-backup-bouncer/>
I have downloaded the tool and compiled it on my Mac with 10.4 to do
some testing. In this case, that's transfers using rsync 3.0.0pre8
from one HFS+ disk image to another HFS+ image (on a computer with an
HFS+ disk as well). Later I'd be using cross-platform cross-
filesystem transfers, so the results below should present something
like the "upper limit" of what is currently possible.
Using the following options for rsync:
--archive --hard-links --acls --xattrs --executability --numeric-ids
I get the following output from backup-bouncer:
------------------ rsync3.0.0pre8 ------------------
This copier exited with error code 23
This copier produced log output in:
/Volumes/Dst/21-rsync3.0.0pre8/log
Verifying: basic-permissions ... ok
Verifying: timestamps ...
Sub-test: modification time ... ok
ok
Verifying: symlinks ... ok
Verifying: symlink-ownership ... ok
Verifying: hardlinks ... ok
Verifying: resource-forks ... ok
Verifying: finder-flags ... ok
Verifying: finder-locks ... FAIL
Verifying: creation-date ... FAIL
Verifying: bsd-flags ... FAIL
Verifying: extended-attrs ...
Sub-test: on files ... ok
Sub-test: on directories ... ok
Sub-test: on symlinks ... ok
ok
Verifying: access-control-lists ...
Sub-test: on files ... ok
Sub-test: on dirs ... ok
ok
Verifying: fifo ... FAIL
Verifying: devices ... FAIL
Verifying: combo-tests ...
Sub-test: xattrs + rsrc forks ... ok
Sub-test: lots of metadata ... ok
ok
So that looks not so bad actually. The main problem for me are the
mangled creation dates. However, not even Apple's own cp with options
-pR (-p to "preserve in the copy as many of the modification time,
access time, file flags, file mode, user ID, and group ID as allowed
by permissions") passes this test:
------------------ cp-apple ------------------
Verifying: basic-permissions ... ok
Verifying: timestamps ...
Sub-test: modification time ... ok
ok
Verifying: symlinks ... ok
Verifying: symlink-ownership ... FAIL
Verifying: hardlinks ... FAIL
Verifying: resource-forks ... ok
Verifying: finder-flags ... ok
Verifying: finder-locks ... ok
Verifying: creation-date ... FAIL
Verifying: bsd-flags ... ok
Verifying: extended-attrs ...
Sub-test: on files ... ok
Sub-test: on directories ... ok
Sub-test: on symlinks ... FAIL
FAIL
Verifying: access-control-lists ...
Sub-test: on files ... ok
Sub-test: on dirs ... ok
ok
Verifying: fifo ... ok
Verifying: devices ... ok
Verifying: combo-tests ...
Sub-test: xattrs + rsrc forks ... ok
Sub-test: lots of metadata ... ok
ok
For comparison, this is Apple's 'fixed' rsync version 2.6.3
protocol version 28:
------------------ rsync-apple ------------------
This copier exited with error code 24
This copier produced log output in:
/Volumes/Dst/10-rsync-apple/log
Verifying: basic-permissions ... ok
Verifying: timestamps ...
Sub-test: modification time ... ok
ok
Verifying: symlinks ... ok
Verifying: symlink-ownership ... ok
Verifying: hardlinks ... ok
Verifying: resource-forks ... FAIL
Verifying: finder-flags ... FAIL
Verifying: finder-locks ... FAIL
Verifying: creation-date ... FAIL
Verifying: bsd-flags ... FAIL
Verifying: extended-attrs ...
Sub-test: on files ... FAIL
Sub-test: on directories ... FAIL
Sub-test: on symlinks ... FAIL
FAIL
Verifying: access-control-lists ...
Sub-test: on files ... FAIL
Sub-test: on dirs ... FAIL
FAIL
Verifying: fifo ... ok
Verifying: devices ... ok
Verifying: combo-tests ...
Sub-test: xattrs + rsrc forks ... FAIL
Sub-test: lots of metadata ... FAIL
FAIL
Adding --fake-super to the options of rsync doesn't help:
------------------ rsync3.0.0pre8 ------------------
This copier exited with error code 23
This copier produced log output in:
/Volumes/Dst/21-rsync3.0.0pre8/log
Verifying: basic-permissions ... FAIL
Verifying: timestamps ...
Sub-test: modification time ... ok
ok
Verifying: symlinks ... ok
Verifying: symlink-ownership ... FAIL
Verifying: hardlinks ... ok
Verifying: resource-forks ... ok
Verifying: finder-flags ... ok
Verifying: finder-locks ... FAIL
Verifying: creation-date ... FAIL
Verifying: bsd-flags ... FAIL
Verifying: extended-attrs ...
Sub-test: on files ... FAIL
Sub-test: on directories ... FAIL
Sub-test: on symlinks ... FAIL
FAIL
Verifying: access-control-lists ...
Sub-test: on files ... FAIL
Sub-test: on dirs ... FAIL
FAIL
Verifying: fifo ... FAIL
Verifying: devices ... FAIL
Verifying: combo-tests ...
Sub-test: xattrs + rsrc forks ... FAIL
cmp: ./many-metadata: Permission denied
Sub-test: lots of metadata ... FAIL
FAIL
-Moritz
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