Re: git-svn too slow, contacts upstream svn repo

> From: Quark <unixuser2000-fbsd@yahoo.com>
> To: Git List <git@vger.kernel.org>
> Cc: 
> Sent: Monday, 27 May 2013 8:55 PM
> Subject: git-svn too slow, contacts upstream svn repo
> 
> hello list,
> 
> I have been using git-svn in an corporate environment where svn repo has lot of 
> branches, (lot means > 100). To avoid cloning all branches my config looks as 
> below
> 
> [svn-remote "svn"]
>         url = svn+ssh://url
>         fetch = srcroot/trunk:refs/remotes/trunk
>         branches = srcroot/branches/{branch_1, branch_2, 
> branch_3}:refs/remotes/*
> 
> Now, when a new branch of my interest is added in svn repo, I had like it to be 
> in my git-repo as well. In an ideal world, one shall simply add that branch name 
> to list in curly braces above, but that does not work. I had love to be proved 
> wrong here. Somebody on stackoverflow.com suggested (to else's question, not 
> mine) to add one more "fetch" as show below.
> 
> [svn-remote "svn"]
>         url = svn+ssh://url
>         fetch = srcroot/trunk:refs/remotes/trunk
>         fetch = srcroot/branch_4:refs/remotes/* # NEW BRANCH
>         branches = srcroot/branches/{branch_1, branch_2, 
> branch_3}:refs/remotes/*
> 
> haven't tried it, neither do I like it.
> 
> I do have a solution which WORKS, it is modified version of an example from 
> \doc\git\html\git-svn.html page. Below I have pasted the example 
> and modified it to reflect my specifics.
> 
> # assume an existing git-svn repo
>         D:\sourcecode
> # Clone locally - make sure the refs/remotes/ space matches the server
>         mkdir project
>         cd project
>         git init
>         git remote add origin file:///D:/sourcecode # file:// is delibrate, want 
> true n/w behaviour
>         git config --replace-all remote.origin.fetch 
> '+refs/remotes/*:refs/remotes/*'
>         git fetch
> # Prevent fetch/pull from local git repo,
> # we only want to use git svn for form here
>        git config --remove-section remote.origin
> # Create a local branch from one of the branches just fetched
>         git checkout -b master FETCH_HEAD
> # Initialize 'git svn' locally (be sure to use the same URL and -T/-b/-t 
> options as were used on server)
>         git svn init http://svn.example.com/project
> 
> # edit config to include newly added branch in curly braces
> # Pull the latest changes from Subversion
>         git svn fetch -r <recentish rev, say BEGIN>:HEAD
> 
> Above works exactly as I want, except the last step of "git-svn fetch" 
> connects to svn repo for each revision from BEGIN to HEAD. I want fairly long 
> history (for pretty blame). Which implies my BEGIN is not so recentish adterall. 
> Hence, it takes awfully long to finish, 2 days typically.
> 
> When GIT_TRACE is 1, below is output received
> 
> trace: exec: 'git-svn' 'fetch'
> trace: run_command: 'git-svn' 'fetch'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.fetchall'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.parent'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.noauthcache'
> trace: built-in: git 'config' '--get' 'svn.revision'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.nocheckout'
> trace: built-in: git 'config' '--get' 'svn.authorsprog'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.followparent'
> trace: built-in: git 'config' '--get' 'svn.authorsfile'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.useSvmProps'
> trace: built-in: git 'config' '--get' 'svn.username'
> trace: built-in: git 'config' '--get' 'svn.repackflags'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.localtime'
> trace: built-in: git 'config' '--int' '--get' 
> 'svn.repack'
> trace: built-in: git 'config' '--get' 'svn.ignorepaths'
> trace: built-in: git 'config' '--int' '--get' 
> 'svn.logwindowsize'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.quiet'
> trace: built-in: git 'config' '--get' 'svn.ignorerefs'
> trace: built-in: git 'config' '--get' 'svn.configdir'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.addauthorfrom'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.useSvnsyncProps'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.noMetadata'
> trace: built-in: git 'config' '--bool' '--get' 
> 'svn.uselogauthor'
> trace: built-in: git 'rev-parse' '--symbolic' '--all'
> trace: built-in: git 'config' '-l'
> trace: built-in: git 'config' '-l'
> trace: built-in: git 'config' '--bool' 'svn.useSvmProps'
> trace: built-in: git 'config' '-l'
> trace: built-in: git 'config' 'svn-remote.svn.branches-maxRev' 
> '524908'
> trace: built-in: git 'rev-list' '--pretty=raw' 
> '--reverse' 
> '9f1414be94ab007b62ace31bf4d210a069276127..refs/remotes/branch_1' 
> '--'
> trace: built-in: git 'rev-list' '--pretty=raw' 
> '--reverse' 
> '5eb0a454bcf066a8199b851add9ec07cde80119d..refs/remotes/branch_2' 
> '--'
> trace: built-in: git 'rev-list' '--pretty=raw' 
> '--reverse' 
> '383b68b8514010a71efe10821e5ccc3541903ceb..refs/remotes/branch_3' 
> '--'
> trace: built-in: git 'rev-list' '--pretty=raw' 
> '--reverse' 
> '89fe1a1d2cfca0886003f043c408fb5afadfec93..refs/remotes/trunk' 
> '--'
> 
> I keep an watch for "svn-remote.svn.branches-maxRev", this serves as 
> my progress. This wait is too much for a simple branch. Though, I must point 
> out, day feels fresh once it finishes :) Does any one know any for this?
> 
> If you paid attention this is Windows machine
> git version 1.8.1.msysgit.1
> 
> 
> thanks,
> Quark
> 
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