Re: bug # 1465

Hey Dan

Thanks a lot for that - Duane is looking at this at the moment.

Would you mind adding this as a comment to the bug?

Cheers
Doug

On 18 May 2006, at 05:27, Dan Thomson wrote:

> Hey all,
>
> I've recently been playing with squid 3 trying to figure out this
> n->write_pending problem in mem_node.cc.
>
> I've noticed that whenever memNodeWriteComplete is called and
> n->write_pending is still set (causing assert to abort), the actual
> mem_node object isn't holding any data (n->dataRange()) gives nothing.
>
> I've also noticed a few conditions where a file will be written to
> disk and then unlinked before mem_node::memNodeWriteComplete gets the
> chance to run. This doesn't seem to happen every time the assert
> fails, but it has happened quiet often in my experience.
>
> I've made a small fix for myself by editing the assert as follows:
>
> assert(n->write_pending || (n->end() - n->start()) == 0);
>
> The problem seems to have dissapeared. I'm aware that this isn't a
> proper fix, but I'm hoping that some of this info might help shed some
> light on the core problem to those of you that know the code a lot
> better than I do.
>
> Thanks!
>
> Dan Thomson
> Systems Engineer
> Peer1 Network
> 1600 555 West Hastings
> Vancouver, BC
> V6B 4N5
> 866-683-7747
> http://www.peer1.com
Received on Wed May 17 2006 - 16:58:26 MDT