Premature EOF...?

max-232 · Posted: Wed Jan 10, 2007 7:52 am Post subject: Premature EOF...?

HI all,
I use a script for the dvd backup powered by vamps.

It works.
But now it won't works!

The error message of vamps is "vamps: Fatal: Premature EOF"

and the command is "play_cell -r 0 -g /dev/dvd 1 1 1 | vamps -E 1 -a 1 -S 1 > temp.mpeg".

I used reiser4 and all went well.
Yesterday evening I did a stage4, format all with ext3, and expanded the stage4 into the new partition.
and I got the error!

What about this error?

Many Thanks in advance.

Massimo

max-232 · Posted: Wed Jan 10, 2007 8:56 am Post subject:

it seems to be a stdin problem....but I don't know how to manage it...

max-232 · Posted: Wed Jan 10, 2007 9:24 am Post subject: Premature EOF

I've posted this in the Multimedia section, but maybe it's a kernel (stdin) problem?

max-232 · Posted: Wed Jan 10, 2007 1:48 pm Post subject:

...I've also upgraded the kernel to the gentoo-sources-2.6.19-r2 and enabled the HPET timer...could this be the problem?

nixnut · Posted: Wed Jan 10, 2007 4:45 pm Post subject:

merged above two posts here.
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max-232 · Posted: Thu Jan 11, 2007 7:24 am Post subject:

I've checked....
with the same config file, kernel 2.6.18, 2.6.17 works perfectly. 2.6.19 gives the error "vamps: Fatal: Premature EOF"

ideas?

max-232 · Posted: Fri Feb 09, 2007 4:56 pm Post subject:

Hi!

I tried with the 2.6.20 kernel and still this problem....it seems something in stdin stdout....but I don't know...

ideas?

bye

g1ul10 · n00b Joined: 01 Dec 2004 Posts: 11

Hi,
the same thing here. I'm using kernel 2.6.21. Did somebody find a solution?

Giulio.

max-232 · Posted: Mon May 28, 2007 5:35 pm Post subject:

yes, I found a solution to run across the problem...it's not the best one, but for me it works.

As you can see here https://forums.gentoo.org/viewtopic-t-542488.html I've started working with fifos

heredown a scratch of code:

RobertBradbury · n00b Joined: 27 Jan 2007 Posts: 9 Location: Boston

It turns out this is under Gentoo Bug #175504.
https://bugs.gentoo.org/show_bug.cgi?id=175504

Its a bug in "vamps" that it isn't handling short reads from a pipe correctly. The "premature-eof.patch" file posted 21 Apr 2007 does appear to fix the problem when I apply it to vamps.c. It may be cropping up in more recent versions of the kernel due to variations in how fifos or pipes are scheduled.

It is unfortunate that this hasn't crept back into the vamps source code and a subsequent Gentoo update.

RobertBradbury · n00b Joined: 27 Jan 2007 Posts: 9 Location: Boston

The "premature EOF" bug report does appear to be mentioned (twice) in the sourceforge "vamps" bug database:
http://sourceforge.net/tracker/?group_id=130986&atid=719578

So its up to the vamps authors to fix the problem presumably.