Re: error: git-svn died of signal 13

From: Eric Wong <normalperson@yhbt.net>
Date: Dec 9, 2009, 05:58 UTC
Message-ID: <20091209055824.GA22941@dcvr.yhbt.net>
In-Reply-To: <20091209053602.GA2739@progeny.tock>

Jonathan Nieder <jrnieder@gmail.com> wrote:

Show 12 quoted lines

> Hi,
> 
> Just wanted to pass on a few reports about git-svn dying with SIGPIPE
> when trying to fetch large repositories.  It seems to fetch a few
> revisions, then die; the repositories can eventually be fetched
> successfully by restarting 'git svn fetch' again and again.
> 
> Some bug reporters have been very patient, but I don’t really know
> where to look or ask in solving this.  Attempts at tracing so far have
> given either too little or too much information to make any sense.
> 
> The problem goes back at least to v1.5.6.5.

Hi Jonathan,

Thanks for taking the time to look into this. This has been a problem for a long time and very difficult to track down.

One factor is that git svn continues happily afterwards so it's hard to reproduce and there's less incentive to look for a fix.

Show 20 quoted lines

> At the end of the git-svn process’s life, the last few function calls
> are these:
> 
>  - SVN::Ra::Reporter::finish_report and related functions
>  - _p_apr_pool_t::DESTROY (libsvn-perl cleaning up, presumably)
>  - SVN::Ra::Callbacks::open_tmp_file, called from
>    SVN::_Ra::svn_ra_do_update, called from
>    Git::SVN::Ra::do_update, called from
>    Git::SVN::Ra::gs_do_update
>  - Git::SVN::_set_repos_root
>  - starting a 'git update-index -z --index-info' to feed commands to
> 
> Maybe /tmp is filling up?  It is hard to know, since the SIGPIPE stops
> everything and we do not get any nice, simple error message describing
> what read or write would have received EPIPE.
> 
> See <http://bugs.debian.org/526989>, <http://bugs.debian.org/540150>,
> <http://thread.gmane.org/gmane.comp.version-control.git/85868/>.
> 
> Any insights?

Can somebody get an strace or core dump for the "git update-index" call? Or even an strace -f of the entire git svn invocation as well...

-- 
Eric Wong