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Re: [Savannah-hackers-public] vcs0 disk filling up, /var/cache/cgit agai

From: Bob Proulx
Subject: Re: [Savannah-hackers-public] vcs0 disk filling up, /var/cache/cgit again
Date: Mon, 13 Mar 2017 11:35:30 -0600
User-agent: NeoMutt/20170113 (1.7.2)

Glenn Morris wrote:
> Me too. In a spirit of scientific enquiry, I added
> max-blob-size=50000
> to /etc/cgitrc, so we'll see what happens. :)

Good experiment!

> There's a 178MB /var/cache/cgit/f3010000 right now.
> It corresponds to the single pack file in the bash repo's
> .git/objects/pack directory. I have no idea why cgit ends up caching that.

It appears that the cgit web interface allows something that I am very
surprised by and my first reaction to it is horror.  It appears that
cgit can be used as a git repo server.  One can clone from it.

  /tmp/junk$ git clone
  Cloning into 'test-project'...

This produced the following activity:

  [13/Mar/2017:13:24:27 -0400] "GET 
/cgit/test-project.git/info/refs?service=git-upload-pack HTTP/1.1" 200 70 "-" 
  [13/Mar/2017:13:24:27 -0400] "GET /cgit/test-project.git/HEAD HTTP/1.1" 200 
34 "-" "git/2.11.0"
  [13/Mar/2017:13:24:28 -0400] "GET 
HTTP/1.1" 404 2431 "-" "git/2.11.0"
  [13/Mar/2017:13:24:28 -0400] "GET /cgit/test-project.git/objects/info/packs 
HTTP/1.1" 200 64 "-" "git/2.11.0"
  [13/Mar/2017:13:24:28 -0400] "GET 
 HTTP/1.1" 200 1364 "-" "git/2.11.0"
  [13/Mar/2017:13:24:28 -0400] "GET 
 HTTP/1.1" 200 1161 "-" "git/2.11.0"

It appears that cgit when acting as a git repo caches the files passed
through it.  This is definitely inefficient at best because those
files are already locally available.  This seems to be a lot of the
problem.  cgit is being used inappropriately as a clone source and
therefore doing a lot of unnecessary work.

I am also seeing a lot of cgit snapshot activity.  Across all of the
projects.  Here is one example.

  [13/Mar/2017:12:34:45 -0400] "GET /cgit/guix.git/snapshot/master.tar.gz 
HTTP/1.1" 200 11642975 "-" "GNU Guile"


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