Re: Git clone stalls at a read(3, ...) saw using strace

From: André Goddard Rosa <andre.goddard@gmail.com>
Date: Jul 28, 2006, 13:57 UTC
Message-ID: <b8bf37780607280657x1c4c88d1ofd0734ddc4642d02@mail.gmail.com>
In-Reply-To: <EA24FE8B11562848B4760FD5EB4D2E9401B3F3C2@SAO1016V.ww101.siemens.net>

On 7/28/06, Ribeiro, Humberto Plinio <humberto.ribeiro@siemens.com> wrote:

Show 11 quoted lines

> Hi, Andre.
>
> After a "ps -ef" I saw two instances of the script defined by
> GIT_PROXY_COMMAND. Strangely one of those instances was child
> of the other. A strace showed the scripts were blocked in a
>"waitpid(-1,". I've killed the child script and the git clone resumed the
>process.
>
> I didn't understand why this blocking on git happened though. The
> creation of these two instances (one child of the other) was also
> strange.

Yes,  it worked to me too, but I also don't know why.

Let me explain exactly what we had to do so someone perhaps can explain why we had to do this:

I configured GIT_PROXY_COMMAND pointing to a script with this content:

(echo "CONNECT $1:$2 HTTP/1.0"; echo; cat ) | nc 172.29.0.6 3128 | (read a; read a; cat )

Later:

git clone git://source.mvista.com/git/linux-davinci-2.6.git

After some time (downloading 117 Mb) it stalled (git-fetch on a pipe read) and we had to do this to resume and let it finish:

[root@mao2wx23 tmp]# ps -ef | grep git | grep -v grep opb694 9975 1451 0 01:39 pts/11 00:00:00 /bin/sh /usr/bin/git-clone git://source.mvista.com/git/linux-davinci-2.6.git opb694 9985 9975 3 01:39 pts/11 00:01:56 git-fetch-pack --all -k git //source.mvista.com git/linux-davinci-2.6.git [root@mao2wx23 tmp]# ps -ef | grep proxy | grep -v grep opb694 9986 9985 0 01:39 pts/11 00:00:00 /bin/sh /home/opb694/proxy-cmd.sh source.mvista.com 9418 opb694 9987 9986 0 01:39 pts/11 00:00:00 /bin/sh /home/opb694/proxy-cmd.sh source.mvista.com 9418 [root@mao2wx23 tmp]# kill 9987

Thanks again for the patience,

-- 
[]s,
André Goddard