[mythtv-users] OT: Raid Server troubleshooting

[F Peeters (MythTV)]

On Thu, October 11, 2007 19:43, nasa01 at comcast.net wrote:
>
>  -------------- Original message ----------------------
> From: "F Peeters (MythTV)" <francesco at fampeeters.com>
>> On Thu, October 11, 2007 19:08, nasa01 at comcast.net wrote:
>> >
>> >  -------------- Original message ----------------------
>> > From: Dan Ritter <dsr-myth at tao.merseine.nu>
>> >> On Thu, Oct 11, 2007 at 01:00:22PM +0000, nasa01 at comcast.net wrote:
>> >> > Hi,
>> >> >
>> >> > Sorry for the OT post....  But I do see lots of people using raid
>> >> servers with
>> >> thier myth setup and I haven't been able to figure out what is
>> causing
>> >> my
>> >> issues.
>> >> >
>> >> > 3x320G && 1x500G in Raid 5 (filesystem is JFS)
>> >> >
>> >> > /var/log/messages
>> >> > rr174x: module license 'Proprietary' taints kernel.
>> >> > rr174x:0: RocketRAID 174x controller driver v1.02 (Apr 7 2007
>> >> 21:39:11)
>> >>
>> >> Don't do that. Switch over to Linux software RAID via the md
>> >> driver.
>> >>
>> >> -dsr-
>> > That could be problematic....  Since I have a lot of stuff on this
>> array
>> > (and my backup solution hasn't sized up to match), I would perfer to
>> keep
>> > the setup as it is and look at software raid sometime in the future.
>> This
>> > assumes software raid is really the best solution.
>> >
>> > Nasa
>> >
>>
>> SW RAID will work on any controller... ATARAID will only work with the
>> current card or identical replacements...
> Ok,
>
> call me confused...  Are you saying I could convert my hardware solution
> to a SW solution and still have access to the raid server (presently setup
> as raid 5).  I thought the switch would mean I would have to wipe the old
> config and start over.  If this isn't true.....
>
> Nasa
>

Let me clarify:
If you chose to rebuild as a software RAID array, you will be able to use
ANY interface card to replace the current one, should it die, and it will
work!
If you stay with ATARAID and the current card dies, you will need to find
an identical card or lose all data...

Also note that ATARAID *is* software RAID, with the addition of a BIOS to
allow booting from the array... (nothing more, nothing less)

AFAIK it is NOT possible to go from ATARAID to MD without rebuilding the
array...

-- 
F Peeters
  PC-Chips M863G Geode - NVidia 440 - Hauppauge PVR250
  Ubuntu 6.10 (Edgy Eft) - XFCE - MythTV 0.20 - Xine
  Panasonic NV-VHD1 VCR/DVD player case modded to fit it all in...