Re: Installing debian on N2100

["Andrew Haswell" <ahaswell@edoras.co.uk>]

Sorry i wasnt clear, the n2100 has 2 disk and i want to use LVM / RAID to 
provide an area of RAID1 storage across both disks and and area of raid0 
storage such that 2x 500GB disks could yeald say 200GB R1 and 600GB R0 
therefore not loosing 50% :-). Using LVM to divide the disks into 50GB 
chunks so that disk can be reallocated if required. As i said im new to 
linux so im not clear on how to do this exactly yet but want to find out, 
the linux guys i work with say that i have some options.

Does that make more sense? Thanks for the reply.

:)

----- Original Message ----- 
From: "Lennart Sorensen" <lsorense@csclub.uwaterloo.ca>
To: "Andrew Haswell" <ahaswell@edoras.co.uk>
Cc: <debian-arm@lists.debian.org>
Sent: Friday, December 14, 2007 3:05 PM
Subject: Re: Installing debian on N2100


> On Thu, Dec 13, 2007 at 07:57:53PM -0000, Andrew Haswell wrote:
> > I've been waiting to see if the installer will get fixed so i can install
> > Debian on my Thecus n2100. My skillset is wintel based not Linux which is
> > to say that i am highly technical and i would like to use my n2100 to 
> > cross
> > train. As the installer doesnt seem to be getting fixed, can anyone 
> > advise
> > me whether i should attempt the work around or not? Ive got the latest
> > firmware on the thecus and can ssh into the box. I would like to get 
> > debian
> > on it and then use LVM to raid 1 a portion of the disk for data 
> > protection
> > including the debian mount points. And from there learn Debian in more
> > detail.
>
> My understanding is that the only problem with the installer is that it
> has to be manually told which kernel to use, which can be done by either
> starting the installer in expert mode or at least telling it to run with
> debconf priority of low which will make it ask which kernel to use.  I
> haven't done it (my arm system doesn't have any way to use the debian
> installer, so I had to create a chroot with debootstrap and switch to
> it).
>
> > I would like to do this as a project over christmas, im just worried 
> > about
> > getting stranded. Advice greatfully received.
>
> Doing raid1 between two partitions (I have never done raid on top of
> LVM, only LVM on raid) on the same disk offers essentially no protection
> at all.  Data loss due to sectors going bad is far less common than data
> loss due to the drive failing entirely.  It will also cause a severe
> performance hit since you will be doing constant seeks to try and access
> both parts whenever you are writing.  So overall a very very bad idea.
> Disks are cheap, use two.
>
> --
> Len Sorensen
>
>
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