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Re: [bug] ra_svn/Cyrus SASL hostname resolution failure when DNS server unavailable (e.g. when offline)

From: Vlad Georgescu <vgeorgescu_at_gmail.com>
Date: 2007-04-24 14:26:42 CEST

Daniel Rall wrote:
> When not connected to the network, and not running named locally, I'm
> getting a hostname resolution failure from ra_svn's Cyrus SASL
> integration's usage of APR:
>
> $ make svnserveautocheck
> --- snip tests.log ---
> START: basic_tests.py
> CMD: svnadmin "create" "svn-test-work/local_tmp/repos" "--bdb-txn-nosync" <TIME = 0.088285>
> CMD: svn "import" "--username" "jrandom" "--password" "rayjandom" "-m" "Log message for revision 1." "svn-test-work/local_tmp/greekfiles" "svn://127.0.0.1:32033/svn-test-work/local_tmp/repos" "--config-dir" "/home/dlr/src/subversion/subversion/tests/cmdline/svn-test-work/local_tmp/config" <TIME = 28.045649>
> subversion/libsvn_ra_svn/cyrus_auth.c:721: (apr_err=670003)
> svn: Temporary failure in name resolution
> Traceback (most recent call last):
> File "/home/dlr/src/subversion/subversion/tests/cmdline/basic_tests.py", line 1816, in ?
> svntest.main.run_tests(test_list)
> File "/home/dlr/src/subversion/subversion/tests/cmdline/svntest/main.py", line 1012, in run_tests
> actions.setup_pristine_repository()
> File "/home/dlr/src/subversion/subversion/tests/cmdline/svntest/actions.py", line 96, in setup_pristine_repository
> main.greek_dump_dir, main.pristine_url)
> File "/home/dlr/src/subversion/subversion/tests/cmdline/svntest/main.py", line 359, in run_svn
> return run_command(svn_binary, error_expected, 0,
> File "/home/dlr/src/subversion/subversion/tests/cmdline/svntest/main.py", line 256, in run_command
> None, *varargs)
> File "/home/dlr/src/subversion/subversion/tests/cmdline/svntest/main.py", line 328, in run_command_stdin
> raise Failure
> svntest.Failure
> END: basic_tests.py
> --- snip tests.log ---
>
> (Note: My line numbers are a little off here.)
> This is more simply reproduced by something like:
>
> $ cd subversion/tests/cmdline/ && ./svnserveautocheck.sh basic
>
> This is caused when svn_ra_svn__do_cyrus_auth() calls
> get_remote_hostname(), which in turn calls apr_getnameinfo(); we're
> apparently attempting to perform name resolution (e.g. via DNS lookup)
> even when we already started with an IP address (e.g. 127.0.0.1), and
> considering name resolution failure to equate to a hard error.
>
> This bug appears to have been injected in r21109, during Garrett's
> commit of a patch from Vlad.

Should be fixed in r24752, thanks!

-- 
Vlad
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Received on Tue Apr 24 14:27:03 2007

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