Hi,

On Fri, 25 May 2007, Hugo Melo wrote:

> One more info:
> We are having problems with images larger than 4GB. We had this
> problem when trying with 3gb and 4gb but only some times.

This is about 100% sure to be a kernel bug. Could you please do

        echo t > /proc/sysrq-trigger

then send the full output of 

        dmesg

What extra patches have the Ubuntu 2.6.20 kernel? 

Some kernel patches can indeed cause loopback related kernel deadlocks 
which so far couldn't be reproduced with vanilla kernels. But we don't know 
yet what exactly is that patch yet and your help would be appreciated a 
lot.

Thank you for the bug report, waiting for your reply. 

        Szaka


> On 5/24/07, Hugo Melo <[EMAIL PROTECTED]> wrote:
> > Hi guys,
> > I am helping the Wubi team ( Windows Ubuntu installer ) and we found a
> > problem when formatting a image located at the ntfs partition using a
> > loop device. It freezes as waiting for the IO response. But this
> > process cannot be closed. All other access to the ntfs partition stays
> > blocked waiting for and can be closed with ctrl+c.
> > The image was created using dd and we are trying to format using mkfs.ext3.
> > Only a few machines can reproduce the problem. My machine is an example.
> > See here more info:
> > https://https://bugs.launchpad.net/lupin/+bug/115217bugs.launchpad.net/lupin/+bug/115217
> > We are using the kernel 2.6.20 (the one used by ubuntu feisty) and the
> > packages from the feisty too. I tested the 1.516 version too.
> > I dont know if i explained what was needed. Feel free to ask anything.
> > Thanks by the project! You are making a good work.
> > --
> > -- Hugo Melo
> >
> 
> 
> 

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