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Re: NFS recommendation
On 04-Jun-99 Alex Shnitman wrote:
> Udi Finkelstein writes:
>
> > 2. Is it possible to configure all 3 disks as one single ext2 partition,
> on a
> > standard kernel? I know there are patches for that, but I'd rather
> install
> > something simple that works out of the box.
>
> What you're looking for is RAID, and all the software is already in
> the kernel, so you don't need external patches. That's 100% true for
> 2.2 kernels. As to 2.0 kernels, AFAIR they only had *some* of the
> modes, namely linear appending and striping, which is what you need
> anyway. But that needs to be checked again.
Both 2.2 and latest 2.0 have the same functionality with respect to RAID. And
for both, it's recommended to apply the "alpha" RAID patches, which, inspite of
their "alpha" name, are very reliable and, what's important, provide a lot of
important new functionality, not to mention dramatic speedup (actually, I don't
know if the linear append mode has been improved - it's not quite RAID BTW).
> The trouble is -- it's hard to boot from such a partiton.
This, as well, has been improved - at least, for RAID1 & RAID5.
> You have to
> make an initrd image, and that's more mess than just "make bzImage
> install". The alternative is to leave the root partition as a normal
> partition and mount all the important stuff (e.g. /usr & /var) as RAID
> partitions. This should be much easier.
I agree that a RAID0 or a linear append device is a bad choice for important
stuff.
Regards,
Evgeny
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/ Evgeny Stambulchik <fnevgeny@plasma-gate.weizmann.ac.il> \
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