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List:       subversion-issues
Subject:    [Issue 4424] New - svn doesn't recognize the working copy when no file lock can be established
From:       yurivict () tigris ! org
Date:       2013-09-11 19:41:48
Message-ID: iz4424 () subversion ! tigris ! org
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http://subversion.tigris.org/issues/show_bug.cgi?id=4424
                 Issue #|4424
                 Summary|svn doesn't recognize the working copy when no file lo
                        |ck can be established
               Component|subversion
                 Version|1.8.x
                Platform|All
                     URL|
              OS/Version|All
                  Status|NEW
       Status whiteboard|
                Keywords|
              Resolution|
              Issue type|DEFECT
                Priority|P3
            Subcomponent|libsvn_ra_local
             Assigned to|issues@subversion
             Reported by|yurivict






------- Additional comments from yurivict@tigris.org Wed Sep 11 12:41:48 -0700 2013 -------
The issue manifests itself when, for example, subversion repository is shared 
over NFS and file lock through fcntl(fd,F_SETLK) fails with (Operation not 
supported).

In this case 'svn info' command prints this error message on otherwise valid 
working copy:
svn: E155007: '/usr/src' is not a working copy

Subversion should recognize this situation when only lock fails but working copy 
is otherwise valid. Subversion should access it read-only and warn user that 
transient errors can occur in case other read-write accesses happen at the same 
time.

My usage example: I have the local working copy for FreeBSD source, and share it 
with several virtual machines through NFS. They rarely, if ever, access it 
through 'svn' comamnd simultaneously. read-only vs. read-write conflicts never 
occur, yet I am unable to use svn commands on NFS share at all. SVN revision is 
missing from all builds on virtual machines.

I believe, the failing fcntl command is issued by SQLite library.

subversion-1.8.1

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