Re: Information Request

[Edward Shishkin <edward.shishkin@xxxxxxxxx>]

On 10/25/2011 09:55 AM, Dušan Čolić wrote:
> Hello
>
> 2011/10/24 Edward Shishkin<edward.shishkin@xxxxxxxxx>:
> > If you need reiser4 patches against some vanilla kernel, send me a
> > request.
> >
> > NOTE: reiser4 is prone to crash under high workload because of
> > old bug, which is not yet fixed. Fsck copes with corruptions
> > caused by this bug (appearing objects with inconsistent key order),
> > however, this makes reiser4 improper for using in production
> > systems (file servers, etc.)
> Could we get a list of confirmed bugs for latest R4,


All bugreports are resolved to only one bug.

The shit is in balancing code I didn't touch. The order of
keys gets inconsistent at TWIG level while handling secondary
COP_INSERT requests generated by new node insertions on LEAF
level.

And the broken order propagates to upper levels because of
delimiting keys assignment policy. As a result some objects
can not be found with the following kernel complaints about
inconsistent key order.


 so that we know
> its limitations and to avoid dangerous use cases.


You need to make sure you can easily fsck your reiser4 partition
at any time. So if you have root on reiser4, you also need to have
a rescue CD with reiser4 support, etc. Also for this reason try to
avoid too large partitions.


> Will kernel.org place for patches be back?


It is rather painful to follow their paranoid instructions.
I think to consider sourceforge.net as a such place (not sure
for now).


> Can we get 3.0 patch and pitfall list :) ?


I have a patch for .39. It also should work for 3.0
If you need this one, then send me a request.

Thanks,
Edward.
P.S. I'll be unreachable from Oct 26 to Nov 07.



>  From all the FSes I try I still get the best data safety and response
> time with R4, even in this state :)
>
>
> Thanks
>
> Dusan
>
>
> > Thanks,
> > Edward.
> >
> >
> > On 10/24/2011 02:17 PM, Dušan Čolić wrote:
> > > Hello,
> > >
> > > You can find enough informations in a FAQ I made for Gentoo
> > > http://forums.gentoo.org/viewtopic-p-5200706.html#5200706
> > >
> > > Have fun
> > >
> > > Dushan
> > >
> > > On Mon, Oct 24, 2011 at 2:10 PM, Matias Seco<matias.jose.seco@xxxxxxxxx>
> > >   wrote:
> > > > Greetings,
> > > > i found very interesting about testing this filesystem. Unfortunately
> > > > i got late with my project, because i couldn't find useful resources
> > > > from google for reiser4,
> > > > mainly because the reiser4's kernel Wiki was down due to maintenaince.
> > > > After time, i saw that the page still didn't return: this is why i
> > > > would like to ask you, if you can point me resources, to understand
> > > > how to configure the reiser4 on my HDD.
> > > >
> > > > Salut, Matias
> > > > --
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