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Re: vzctl enter <VEID> hangs


From: Chet Ramey
Subject: Re: vzctl enter <VEID> hangs
Date: Sat, 05 Mar 2011 16:59:49 -0500
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101207 Lightning/1.0b2 Thunderbird/3.1.7

On 3/5/11 9:50 AM, Henk van de Kamer wrote:
>> This is normal.  Readline is trying to read input.
> 
> May be normal, but then please explain why Bash 4.1 patchlevel 009 works
> and Bash 4.2 patchlevel 6 don't. If I downgrade the virtual container it
> works again. So the only change is Bash and until proven otherwise that
> is in my humble opinion the culprit :-).

That's not an unreasonable assumption, but it needs to be verified, and
nobody has been able to provide solid evidence that bash is at fault.

What happens when you type something?  Does the read return and a
command get executed?  It might be something as simple as readline not
thinking it's supposed to echo terminal input (_rl_echoing_p) for
some reason.

> 
> I've given a strace from both versions. It seems that something in the
> code is changed around the point where the read is. However I can not
> find a git or other version control system? So I can't test the
> seperated patches after Bash 4.1 patclevel 9 to narrow it down for you.

There are no separated patches after bash-4.1.9.  The total amount of
change between bash-4.1 readline and bash-4.2 readline is really pretty
small, and none of those changes seem applicable.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/



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