warnera6 at egr
Feb 21, 2006, 2:29 PM
Post #17 of 17
Well if you have hardware raid you have to RAID first anyway, otherwise
you can do it in either order...However, I'd probably do RAID first,
then LVM, as software raiding a bunch of virtual partitions probably
takes a ton of processing power than LVM over software RAID.
As for details...There are plenty of guides for software raid out there.
Get that set up, you should have some /dev/md devices afterwards.
Then just use the LVM tools to slice up the raid devices instead of the
"actual" devices. IE give the LVM tools /dev/mdX instead of /dev/sdX.
Then make sure you are mounting things properly ;)
Nick Smith wrote:
> how would you go about getting the best of both worlds? raid the disks
> then put them in an LVM? do you have any details on that? it sounds
> On 2/21/06, Gustavo Zacarias <gustavoz [at] gentoo> wrote:
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>>Nick Smith wrote:
>>>from everything ive read it doesnt look like LVM has any redundancy, i
>>>mean it is nice to be able to hotadd drives to your LV, but i need
>>>redundancy as well, so it looks like raid1 or 5 would be the way to
>>>go, because the backups would get more intensive as the LV grew right?
>>>what if one drive in your LV dies? do you lose everything on the LV?
>>>sorry for my ignorance, but this LVM is all new to me, and im not
>>>finding any clear answers googling on the net...
>>Well RAID and LVM are two completely different things, i don't know why
>>you people mix them up.
>>The best of both worlds is RAID1 or RAID5 + LVM.
>>RAID0 is basically the same that LVM does and is just concatenation - no
>>redundancy at all "a big bunch of disks".
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>>gentoo-sparc [at] gentoo mailing list
> Linux, because I'd rather own a free OS than steal one that's not
> worth paying for.
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