Supermirror problems

[John Arbash Meinel]

James Blackwell wrote:
> Would anybody happen to know of conditions that can cause branch-format to
> be zeroed out? 
> 
> For a reason that I havent' ascertained yet, the supermirror initially
> mirrors branches. On some later mirror, the branch format file gets turned
> into a zero length file.
> 

As far as I know, the only time we create .bzr/branch-format is when we
first initialize a branch, or if we upgrade a branch. (Say the first
time you pull). After that, all the code is read-only.

$ grep -rnI "branch-format" bzrlib/
> bzrlib/upgrade.py:147:        os.remove(self.branch.controlfilename('branch-format'))
Remove the old one while we upgrade

> bzrlib/upgrade.py:188:        self.branch.put_controlfile('branch-format', format)
Set it to the new one

> bzrlib/tests/test_upgrade.py:92:     ('.bzr/branch-format', 'Bazaar-NG branch, format 0.0.4\n'),
> bzrlib/tests/test_upgrade.py:134:    ( './.bzr/branch-format',
> bzrlib/tests/test_upgrade.py:199:    ( './.bzr/branch-format',
Tests involving the branch format

> bzrlib/tests/test_sftp_transport.py:278:        self.failUnlessExists('.bzr/branch-format')
Another test

> bzrlib/tests/test_fetch.py:231:        self.failUnless(self.weblogs[0].endswith('branch-format HTTP/1.1" 200 -'))
Test again

> bzrlib/branch.py:803:            ('branch-format', BZR_BRANCH_FORMAT_6),
Create it during branch initialization

bzrlib/branch.py:825:            fmt = self.controlfile('branch-format',
'r').read()
Read only

bzrlib/info.py:36:    print 'branch format:',
b.controlfile('branch-format', 'r').readline().rstrip('\n')
Read only.

John
=:->
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