From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jonathan Nieder <jrnieder@gmail.com>
Subject: error: git checkout-index: unable to write file
Date: Thu, 4 Nov 2010 14:00:07 -0500
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Hi gitsters,

Just tried cloning an enormous repo to /tmp (which uses tmpfs)
and got

 error: git checkout-index: unable to write file webkit/tools/test_shell/resources/textAreaResizeCorner.png
 error: git checkout-index: unable to write file webkit/tools/test_shell/run_all_tests.cc
 error: git checkout-index: unable to write file webkit/tools/test_shell/simple_appcache_system.cc
 error: git checkout-index: unable to write file webkit/tools/test_shell/simple_appcache_system.h

[etc].

Maybe we can do better?  It seems non-ideal in a few ways:

 1) it is not checkout-index but read-tree -m that prints the message
 2) errno is forgotten
 3) I would prefer if "git clone" errored out quickly for ENOSPC instead
    of continuing to fill in the cracks with what small files it can
    find.  Though I suppose the current behavior is better for errors
    like EPERM and ENAMETOOLONG, so I can't complain much.