[Buildbot-devel] How to suppress "rm -rf" at start of SVN update operation???

[Peter Barada]

How do I suppress the "rm -rf build" that is done at the start of a 
job?  This wasn't a problem when I ran buildbot-0.8.3p1 (w.o 
ChangeFilters), but when I upgraded to 0.8.4 (Twisted 10.1.0) it starst 
off with a "rm -rf .../build" to wipe out the build tree.  Here's (a 
snippet of) what I have for master.cfg:

LTIB_REPO_20091102='svn+ssh://LOGIC+peterb@cvs.logicpd.com/cvs/eps_svn/software/products/linux/LTIB/trunk/ltib-20091102'
svn_poller = SVNPoller(
                    svnurl=LTIB_REPO_20091102,
                    pollinterval=5*60, # seconds
                    histmax=10,
                    svnbin='/usr/bin/svn',
                    project='repo-ltib-20091102',
)
c['schedulers'].append(Scheduler(name="LTIB-20091102",
                                 
change_filter=ChangeFilter(project='repo-ltib-20091102'),
                                 treeStableTimer=2*60,
                                 builderNames=["buildbot-LTIB-20091102"]))

f1 = factory.BuildFactory()
f1.addStep(SVN(mode='update', baseURL=LTIB_REPO_20091102, defaultBranch=''))
f1.addStep(Compile(command=["./ltib", "-b", "--preconfig", 
"config/platform/omap3logic/defconfig"],
                    haltOnFailure=True))

b1 = {'name': "buildbot-LTIB-20091102",
       'slavename': "example-slave",
       'builddir': "ltib-20091102",
       'factory': f1,
       }
c['builders'] = [b1]

The start of the update log file looks like:

starting svn operation
rm -rf /home/peter/work/logic/buildbot/ltib-slave/ltib-OMAPPSP/build
  in dir /home/peter/work/logic/buildbot/ltib-slave/ltib-OMAPPSP (timeout 1200 secs)
  watching logfiles {}
  argv: ['rm', '-rf', '/home/peter/work/logic/buildbot/ltib-slave/ltib-OMAPPSP/build']
  environment:


I don't want to remove the ltib-OMAPPSP/build tree since inside of the 
tree is a LInux root filesystem (which "rm -rf" fails due to root owned 
files/directories in it) and also it takes a looong time to rebuild from 
scratch.  I tried adding a "always_purge=False" to the SVN(), but it has 
no effect.

Any suggestions are most appreciated!


-- 
Peter Barada
peter.barada at logicpd.com