Antw: Re: [SunHELP] SDS/Sol8-9 question: replicas on a mirror???

[Michael Eble]

hello neighbour,

sorry, but especially for your question i have no answer - for not
exactly understanding the case.

if a disk will die the mirror-disk instantly takes over. 

how do you control your volumes? we use veritas-volume-manager giving
the opportunity just change the broken disk and "remirror" again. 

booting with a damaged disk we do that way:at the OK-Prompt i write
instead of 

boot 

boot <diskname> 

so the machine uses the disk i prefer.

not sure if this info can help you ?

anyhow happy weekend, neighbour





Michael Eble
------------------------------

Systemadministration
Informationstechnologie
Klinikum der Stadt Ludwigshafen am Rhein gGmbH
Bremserstr. 79
D-67063 Ludwigshafen
Germany

Phone +49-621-503-2227
Fax      +49-621-503-2019
mailto: michael.eble at klilu.de 
Homepage http://www.klilu.de/
 


>>> mk at lexcom-net.de Freitag, 15. Oktober 2004 10:47:10 >>>
hi Michael,

thanks for the answer ... I agree. Sorry ... bad example in question
...
I'd never made such a configuration ... everytime I'm using two
controller
... also on my home-office UE10 with 2 IDE-Controllers.

But much more disks had died in the last years ... but only one or two
controller in very many Suns ;-)

Ok ... I have two onboard-controller in a Sun like a E420R ... one disk
on
each controller ... mirrored ... but my first problem will happen, if
one
of these disks will die ... correct ?

If one disk will die the replicas will be missing from this dead disk
...
Single-User-Mode, metadb -r ... etc.

Is there any workaround to this behavior ?

Thanks Michael

(To Michael: Michael from Waibstadt nearby Sinsheim ;-)


> hi michael,
> 
> you will have a big problem, if none of the disk die but a
controller.
> 
> try to mirror on another controller than c0.
> 
> regards
> michael
> 
> Michael Eble
> ------------------------------
> 
> Systemadministration
> Informationstechnologie
> Klinikum der Stadt Ludwigshafen am Rhein gGmbH
> Bremserstr. 79
> D-67063 Ludwigshafen
> Germany
> 
> Phone +49-621-503-2227
> Fax      +49-621-503-2019
> mailto: michael.eble at klilu.de 
> Homepage http://www.klilu.de/ 
> 
> 
> 
>>>> mk at lexcom-net.de Freitag, 15. Oktober 2004 09:53:03 >>>
> Hey,
> 
> I'm thinking I have a problem with mirroring the boot- and system-
> partions.
> 
> Example:
> mirror of root
> mirror of swap
> mirror of usr
> 
> replicas are on c0t0d0s3 and c0t1d0s3.
> 
> eeprom is correct to first and second boot-device.
> 
> If one of these disks would die and someone must reboot the system,
> it's starting only in single-user-modus, because someone must delete
> the missing replicas of the failed disk before.
> 
> Is there any workaround for normal startup ?
> 
> 
> Regards Michael
> _______________________________________________
> SunHELP maillist  -  SunHELP at sunhelp.org 
> http://www.sunhelp.org/mailman/listinfo/sunhelp 
> _______________________________________________
> SunHELP maillist  -  SunHELP at sunhelp.org 
> http://www.sunhelp.org/mailman/listinfo/sunhelp 
_______________________________________________
SunHELP maillist  -  SunHELP at sunhelp.org 
http://www.sunhelp.org/mailman/listinfo/sunhelp