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

----- Original Message -----

From: Quark <redacted>
To: Git List <redacted>
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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is this not right forum?

thanks,
Quark