From mboxrd@z Thu Jan 1 00:00:00 1970
Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org)
by finch.gentoo.org with esmtp (Exim 4.60)
(envelope-from <gentoo-user+bounces-121380-garchives=archives.gentoo.org@lists.gentoo.org>)
id 1Q7nAG-00075h-Nt
for garchives@archives.gentoo.org; Thu, 07 Apr 2011 11:14:16 +0000
Received: from pigeon.gentoo.org (localhost [127.0.0.1])
by pigeon.gentoo.org (Postfix) with SMTP id AD173E0794;
Thu, 7 Apr 2011 11:12:44 +0000 (UTC)
Received: from mail-yw0-f53.google.com (mail-yw0-f53.google.com [209.85.213.53])
by pigeon.gentoo.org (Postfix) with ESMTP id 79612E0794
for <gentoo-user@lists.gentoo.org>; Thu, 7 Apr 2011 11:12:44 +0000 (UTC)
Received: by ywl2 with SMTP id 2so1386724ywl.40
for <gentoo-user@lists.gentoo.org>; Thu, 07 Apr 2011 04:12:44 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=gmail.com; s=gamma;
h=domainkey-signature:message-id:date:from:user-agent:mime-version:to
:subject:references:in-reply-to:content-type
:content-transfer-encoding;
bh=JrB0LYPfgFBBA3iHTAhnnkNT6ew5820YAZ9gVoxchaA=;
b=Kd7mHssondPC4Mm+uq000aZfYMdt8S1Iejl10zGHyI7pQHiMawCU+Q8cvIV6b3/w72
pldN2x2gPMdzBWlyl6Z52jyJ3j8zXncsAFAxaUMwvZ47OJA6Xa2r/W/Rp0ZQdk4Yb9ZW
ko+db0NYtxjKO5snmwcQetruTBRLgmMOci9nQ=
DomainKey-Signature: a=rsa-sha1; c=nofws;
d=gmail.com; s=gamma;
h=message-id:date:from:user-agent:mime-version:to:subject:references
:in-reply-to:content-type:content-transfer-encoding;
b=V4tBvC8GOTAu5/DABHU3Uj/13LS/nd6daa8ZmdggWQ5pkfLd5yWOSpBjlgc19Dg+32
uZj1sHEyBFxn0azHi3IEIKsQpkjp4SknDjW4RTuhczYIpEuPUT6TwGv1+kG+EpTd7Mgc
3sD82qVocRam+pahpMqO+CYc7JKiNY/m9lJn4=
Received: by 10.236.78.33 with SMTP id f21mr958881yhe.123.1302174763051;
Thu, 07 Apr 2011 04:12:43 -0700 (PDT)
Received: from [192.168.2.5] (adsl-0-118-199.jan.bellsouth.net [65.0.118.199])
by mx.google.com with ESMTPS id 27sm679879yhl.25.2011.04.07.04.12.41
(version=SSLv3 cipher=OTHER);
Thu, 07 Apr 2011 04:12:41 -0700 (PDT)
Message-ID: <4D9D9C28.9070403@gmail.com>
Date: Thu, 07 Apr 2011 06:12:40 -0500
From: Dale <rdalek1967@gmail.com>
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.18) Gecko/20110325 Gentoo/2.0.13 SeaMonkey/2.0.13
Precedence: bulk
List-Post: <mailto:gentoo-user@lists.gentoo.org>
List-Help: <mailto:gentoo-user+help@lists.gentoo.org>
List-Unsubscribe: <mailto:gentoo-user+unsubscribe@lists.gentoo.org>
List-Subscribe: <mailto:gentoo-user+subscribe@lists.gentoo.org>
List-Id: Gentoo Linux mail <gentoo-user.gentoo.org>
X-BeenThere: gentoo-user@lists.gentoo.org
Reply-to: gentoo-user@lists.gentoo.org
MIME-Version: 1.0
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] LVM for data drives but not the OS
References: <4D9D9071.2050504@gmail.com> <20110407104936.635DD2962@data.antarean.org>
In-Reply-To: <20110407104936.635DD2962@data.antarean.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Archives-Salt:
X-Archives-Hash: cb5edcdc24ae18e2f9d906e9016028c2
Joost Roeleveld wrote:
> On Thursday 07 April 2011 05:22:41 Dale wrote:
>
>> Hi,
>>
>> Quick question about LVM. I have a 750Gb drive that has miscellaneous
>> stuff on it. Stuff likes videos, music, pictures, ISO files and a few
>> other things. It's not full yet but it is working on it. I have my OS
>> on sda. The large drive is on sdc. If I buy another drive it should be
>> sdd. I think this is possible from what I have read but want to make
>> sure. Could I put sdc and sdd on LVM but the OS remain as it is with
>> LVM not involved at all? Basically, my OS stays just like it is and is
>> not touched my LVM at all but the two larger drives are managed by LVM.
>>
> Simple (and complete answer): Yes, you can use LVM only for a subset of the
> drives you have inside a system.
>
> You will need to do it in the following steps though:
> - create PV, LVM and LV on the new drive
> - copy data over
> - create PV on old drive and add it to LVM
> Contact me or list if you need help with the actual commands and syntax.
> (There are plenty of howtos around)
>
>
I was reading the howto on a couple sites and it sounded like this could
be done. Glad to know I would have to copy the files over to a LVM
drive tho. That info was something I didn't know. I was hoping for
some magic. lol
>> I want to do it this way because I don't trust LVM enough to put my OS
>> on. Just my personal opinion on LVM.
>>
> Interesting argument. You don't trust LVM, so you put your personal files on
> there, but not the easily replacable stuff like OS? :)
>
>
I like my OS setup and don't want to have to reinstall. Although Gentoo
has never let me down yet, I don't want to add to the confusion. If I
can boot and get to my email, I can get help to fix LVM if needed. I
also keep a backup of my personal files. I could recover the things I
don't backup tho. Most of my concern is my lack of experience with
LVM. If I was a guru on it, I might feel better about it.
>> If there is a better solution to link two large drives, I'm open to
>> those ideas as well. LVM is all I can think of is why I mention it.
>>
> RAID-0 (if they're same size) or linking them together.
> Compared to those, I would always recommend LVM as that is easier to maintain
> then JBOD or RAID-0.
>
> There might also be filesystems that include disk-spanning, but if you're
> already not convinced about LVM being reliable, I wouldn't use one of these
> filesystems then.
>
> Please note, I have not lost data related to issues with LVM. I have, in the
> distant past, lost data related to issues with filesystems.
> Because of the latter, I rely on a combination of RAID-subsystems with LVM on
> top and reliable backups :)
>
> --
> Joost Roeleveld
>
>
Unless someone has a better idea, I think LVM is about all I can find
that would do this. The drives won't be even close to each other. I
hope I can find a nice 2Tb drive that I can afford. ;-) Maybe that
will last a while. The 750Gb drive did last a pretty good while. I'm
not sure after that tho.
Thanks for the info. It did add to my knowledge and settle one of my
questions.
Dale
:-) :-)