[clug] Booting: Debian stable uses grub 1 or 2? recognising LVM's - SSD

[norman bakker]

Hi

I  recently installed an SSD (Samsung 840 Pro Series 2.5-Inch 128
SATA_6_0_gb) and am impressed with the performance.

The setup:
Mint13 root and /home  on the ssd (new install; ext4
Grub2 but not in a separate partition
Separate /var,/tmp and /swap on sata;
'noop' scheduler for the ssd;
Browser profiles using profile-sync-daemon on tempfs.
(With a ram of 8GB I've yet to see swap being used)

There is quite a good write up of this with more suggested tactics here:
https://wiki.archlinux.org/index.php/Solid_State_Drives
and here:
http://apcmag.com/how-to-maximise-ssd-performance-with-linux.htm

Regards

Norm


On Tue, Mar 5, 2013 at 6:00 AM, <linux-request at lists.samba.org> wrote:

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>    1. Booting: Debian stable uses grub 1 or 2? recognising LVM's
>       (steve jenkin)
>    2. Re: Booting: Debian stable uses grub 1 or 2? recognising
>       LVM's (Scott Ferguson)
>    3. Re: Booting: Debian stable uses grub 1 or 2?      recognising
>       LVM's (jm)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Mon, 04 Mar 2013 17:54:03 +1100
> From: steve jenkin <sjenkin at canb.auug.org.au>
> To: Canberra Linux User Group <linux at lists.samba.org>
> Subject: [clug] Booting: Debian stable uses grub 1 or 2? recognising
>         LVM's
> Message-ID: <5134450B.1040506 at canb.auug.org.au>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I'm setting up a new desktop soon, probably Debian stable.
>
> Will fit two disks, an SSD and HDD. Part of my experimenting will be
> using an LVM module that spreads files across SSD/HDD based on the
> amount of (read?) access they get.
>
> I'm wondering how I should setup the SSD boot disk to minimise
> disruption as I test with the LVM.
>
> Currently I'm thinking:
> * SSD: 1-2GB as ext2/3 boot filesystem
> * SSD: half remaining for normal system, possibly as a cache to the HDD
>        [flashcache?]
> * SSD: remaining as test area for LVM
> * HDD: half as ext3 or xfs filesystem, half as test area for LVM
>
> I'm much happier with grub-1 and its simple config file, but can setup
> and use grub-2 if I have to. I'm not sure what Debian stable provides (I
> expect both) or which comes as the default.
>
> Though I'd like to throw all the SSD & HDD into a single LVM
>
> My concern is how grub-1 and grub-2 handle LVM modules they've not seen
> before. Do I have to modify them to understand the new LVM or just have
> a boot partition with simple filesystem?
>
> Anyone suggest what I should be researching and suitable search terms?
>
> Thanks in Advance
>
> steve
>
>
>
> --
> Steve Jenkin, Info Tech, Systems and Design Specialist.
> 0412 786 915 (+61 412 786 915)
> PO Box 48, Kippax ACT 2615, AUSTRALIA
>
> sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin
>
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