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Re: FSFS on Mac OS X network shares

From: Tom Mornini <tmornini_at_infomania.com>
Date: 2005-04-11 08:53:35 CEST

Hash: SHA1

How about Apache or svnserve?

Mounting the repo via file sharing on the client system (if I
understand you correctly)
is just not the best way to handle this.

On Apr 10, 2005, at 6:37 PM, B. Wells wrote:

> I couldn't find this covered in the mailing list or documentation, so
> I decided to post something on it...
> I've tried to use the FSFS repository format to store a Subversion
> 1.1.3 repository on a Windows file server from a Mac OS X 10.3.8
> machine. Unfortunately, it fails with an error regardless of way I
> mount the network share (SMB or AFP):
> svn: Error opening db lockfile
> svn: Can't get shared lock on file 'test/locks/db/lock': Operation not
> supported
> After digging through the Subversion source, I discovered that the
> error was originating in a call to apr_file_lock. This function in the
> Apache Portable Runtime (0.9.6) uses fcntl when compiled under Mac OS
> X 10.3. I wrote some test code that would attempt to lock a file with
> flock and discovered that it does indeed not work for SMB or AFP
> mounted shares - error 45 is always returned.
> If compiled on a Unix system that does not support fcntl, the APR will
> use flock instead. I adjusted my test code to use flock and got no
> errors with file locks on SMB or AFP mounted shares. However, I soon
> realized that for AFP shares flock seems to do absolutely nothing - no
> error, but file locking does not work. On the other hand, file locks
> appear to work with flock on an SMB mounted network share. The only
> caveat is that shared locks act like exclusive locks.
> Based on this discovery, I've decided to modify my copy of the APR
> code so that it checks the filesystem type using fstatfs and uses
> flock if the type is "smbfs". All other filesystems will be handled
> with fcntl as usual. I'm going to test Subversion with the modified
> APR this week to see how it responds to the change.
> Any suggestions or thoughts on this work-around?
> Thanks,
> – Brian Wells
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- --
- -- Tom Mornini

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Received on Tue Apr 12 01:26:17 2005

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