[plug] Home Server LVM/RAID stuff

[Trevor Phillips]

On Wed, Aug 20, 2008 at 6:04 PM, Patrick Coleman <blinken at gmail.com> wrote:
>
> Nothing I know of on Linux will let you do per-folder selection of
> whether to store on a redundant volume, unfortunately.

I'm not too fussed about the per-folder support. I'm happy to have my
important stuff on a separate volume.
A per-folder solution could be done using a fs that supports extra
metadata, and inotify. I don't know if such a beast already exists
though, but it wouldn't be too hard. Hmmm...

> What I'd recommend is the following:
>  - Do RAID on physical devices or partitions. I've never tried doing
> it on LVM; I'm sure it's possible but it'll be more flexible if you
> put the LVM on the RAID. This means you can set up redundant and
> non-redundant volume groups, with all the associated LVM magic.
> RAIDing LVM means you lose the ability to snapshot a logical volume,
> for example, unless you snapshot every volume of a raid set
> simultaneously.

Aaah yes, that's a good reason to put the LVM on the RAID, rather than
RAID on the LVM... I thought that would be the more sensible/neater
solution.

> Also, back stuff up somewhere. I rekon dirvish is great for that,
> mostly because it's about 10 lines in a config file and I can't be
> arsed configuring bacula.

Googling now. ^_^

Thanks.

-- 
Trevor Phillips - http://dortamur.livejournal.com/
"On nights such as this, evil deeds are done. And good deeds, of
course. But mostly evil, on the whole."
 -- (Terry Pratchett, Wyrd Sisters)