[mythtv-users] An LVM'd drive died! What do I do...

David Maher dm at netsol.com.au
Thu Oct 27 03:40:46 EDT 2005



-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org]On Behalf Of David Bennett
Sent: Thursday, 27 October 2005 5:30 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] An LVM'd drive died! What do I do...


Wow...

 this is stressing me out. So basically by adding another drive to my
LVM group (which I assume means I am not "striping" I increased the
size of my drive at the cost of now giving 2 harddrives a chance to
fail instead of one. (shooot.... especially considering my luck with
hard drives.)

I wonder what I should do? If I buy 2 400's or 500's and run them in
RAID, maybe that would make me feel better. How hard is it to copy the
data off the LVM to a new hard drive? Coming from a Windows world I am
always worried about missing hidden or system files. Is there a way to
copy everything off the video drive onto a new drive and not miss out
on anything?

(And on another note, is a 2 disk raid even worth it? If one of the
hard drives develops an error, will that not corrupt its partner?)

What does everyone think? Help me develop the poor mans backup...
(not only do I keep my Video files on the LVM (which I can afford to
lose), but I also keep my main cpu backup there. That would be
upsetting...)

dave

Personally, I use 4 x 400gb sata drives with hardware raid 5 on an adaptec sata raid controller, one drive is configured as a hot spare. I then use LVM on top of this, which means that I can still grow my volume onto another set of mirrored or raid drives if I want. I have all of our movies, plus our entire music collection, as well as all of the recorded tv that we haven't watched or want to keep on this volume, so I wouldn't want to lose it. It is too big to back up, so raid 5 gives me protection from hardware failures at least.
Cheers

David Maher


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