Re: Dual boot ( Suse 9.2 + Debian for AMD 64 ): K8S Pro (S2882UG3NR) + Sata Raid 1
Nils Valentin <valentin_nils@be-known-online.com> writes:
> Hi Debian fans on the list,
>
> Thank you very much for the many, many responds I received when posting my
> last threat in October called "K8S Pro (S2882UG3NR) + Sil 3114 (Raid 1) +
> Sarge".
>
> In the meantime I managed to follow up on software raid and completely ignore
> the proprietary sata drivers.
>
> Anyway, here is a new challenge.
>
> This time I want to make a dual boot machine (Suse 9.2 and Debian for AMD 64).
>
> 1) It seems like when creating a raid set is this beein written directly to
> the harddisks. Is this correct ?
Yes and no.
You can (which should be default) write metadata at the end of the
raid devices that allow the kernel to autodetect the raid on boot. But
that only works if raid support is compiled in in the kernel. When
raid is a module (and it is for Debian) the raid has to be setup
manualy and then the /etc/raidtab might be used.
> Background: I want to setup Suse and Debian next to each other and setting up
> "/" + "/var" + "usr" f.e. as Raid level 1. This would require me to set them
> up separately for each OS. However after having installed the first OS the
> second version will write his raid instructions on the disk, basically
> removing the raid instructions from the first OS.
>
> Any chance to circumvent this ?
You can circumvent the raid from being recreated by starting it
manually on the second console (if Debian doesn't detect it anyway)
but you can hardly share /, /var and /usr between SuSe and Debian.
MfG
Goswin
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