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List:       gentoo-sparc
Subject:    Re: [gentoo-sparc] LVM on sparc?
From:       Alec Joseph Warner <warnera6 () egr ! msu ! edu>
Date:       2006-02-21 21:29:30
Message-ID: 43FB863A.6060904 () egr ! msu ! edu
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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 ;)

-Alec Warner

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
> nice.
> 
> On 2/21/06, Gustavo Zacarias <gustavoz@gentoo.org> wrote:
> 
>>-----BEGIN PGP SIGNED MESSAGE-----
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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".
>>
>>- --
>>Gustavo Zacarias
>>Gentoo/SPARC monkey
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>>--
>>gentoo-sparc@gentoo.org mailing list
>>
>>
> 
> 
> 
> --
> Linux, because I'd rather own a free OS than steal one that's not
> worth paying for.
> 
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