Subject: ANNOUNCE: mdadm 3.3.3 - A tool for managing md Soft RAID under Linux

Subject: ANNOUNCE: mdadm 3.3.3 - A tool for managing md Soft RAID under Linux

[NeilBrown]

I am pleased to announce the availability of
   mdadm version 3.3.3

It is available at the usual places:
   http://www.kernel.org/pub/linux/utils/raid/mdadm/
and via git at
   git://github.com/neilbrown/mdadm
   git://neil.brown.name/mdadm
   http://git.neil.brown.name/git/mdadm.git

The 100 changes since 3.3.3 are mostly little bugfixes and some improvements
to the selftests.
raid6check now handle all RAID6 layouts including DDF correctly.
See git log for the rest.

NeilBrown 24th July 2015

Re: Subject: ANNOUNCE: mdadm 3.3.3 - A tool for managing md Soft RAID under Linux

[Piergiorgio Sartor]

On Fri, Jul 24, 2015 at 04:35:30PM +1000, NeilBrown wrote:
> 
> 
> I am pleased to announce the availability of
>    mdadm version 3.3.3
> 
> It is available at the usual places:
>    http://www.kernel.org/pub/linux/utils/raid/mdadm/
> and via git at
>    git://github.com/neilbrown/mdadm
>    git://neil.brown.name/mdadm
>    http://git.neil.brown.name/git/mdadm.git
> 
> The 100 changes since 3.3.3 are mostly little bugfixes and some improvements
> to the selftests.
> raid6check now handle all RAID6 layouts including DDF correctly.
> See git log for the rest.
> 
> NeilBrown 24th July 2015

Hi Neil,

I would like to thank you for clean up and improving
"raid6check.c".
I personally appreciate your contribution very much,
and I think it is good to have your expert eye
looking at the code.

Thanks again for your time,

bye,

-- 

piergiorgio

Re: Subject: ANNOUNCE: mdadm 3.3.3 - A tool for managing md Soft RAID under Linux

[NeilBrown]

On Mon, 27 Jul 2015 18:29:06 +0200 Piergiorgio Sartor
<piergiorgio.sartor@nexgo.de> wrote:

> On Fri, Jul 24, 2015 at 04:35:30PM +1000, NeilBrown wrote:
> > 
> > 
> > I am pleased to announce the availability of
> >    mdadm version 3.3.3
> > 
> > It is available at the usual places:
> >    http://www.kernel.org/pub/linux/utils/raid/mdadm/
> > and via git at
> >    git://github.com/neilbrown/mdadm
> >    git://neil.brown.name/mdadm
> >    http://git.neil.brown.name/git/mdadm.git
> > 
> > The 100 changes since 3.3.3 are mostly little bugfixes and some improvements
> > to the selftests.
> > raid6check now handle all RAID6 layouts including DDF correctly.
> > See git log for the rest.
> > 
> > NeilBrown 24th July 2015
> 
> Hi Neil,
> 
> I would like to thank you for clean up and improving
> "raid6check.c".
> I personally appreciate your contribution very much,
> and I think it is good to have your expert eye
> looking at the code.
> 
> Thanks again for your time,
> 
> bye,
> 

Happy to help, but I should confess that the motivation was purely
selfish.
I was doing some testing and the 01raid6integ test (which fails
different devices in a RAID6 and checks the data is still correct) was
occasionally reporting errors - a bit of a worry.

It eventually turned out to be a hardware issue - I was running in VMs
and after power-cycling my workstation the problem doesn't appear any
more.
But before I got to the stage I wanted to get a clearer idea of what
sort of corruption was happening, so I added a call to raid6check to
the test and it reported really strange results for some layouts.
So in order to get the data I needed, I fixed the code to work properly
for all layout.  i.e. write a test script to test all layouts, then fix
things until the script stopped complaining :-)

So despite that fact that it didn't actually lead me to the cause:
thank you for providing the program in the first place :-)

Thanks,
NeilBrown