On Wed, Oct 17, 2007 at 12:21:30PM +0200, Martin Marcher wrote: > Hi, > > 2007/10/17, Alex Samad <alex@samad.com.au>: > > 4 partitions to make up 4 md's > > > > > > md0 /boot ( ~ 500M - I like have space here) sda1 + sdb1 > > md1 / (~10G) sda2 + sdb2 > > md2 swap sda3 + sdb3 > > md3 LVM PV sda4 + sdb4 > > > > from the PV I make a VG and then lots of LV's > > > > I have used this sort of set for a while, but what I would like to do is not > > make md3 and instead use sda4 + sdb4 as 2 PV and then I get the chance to > > decide which pv is made up of mirrored space and which is not. > > personally I'd either use Interesting, I have a habit though of keeping root out of LVM, very easy to get access to root in emergency when its a raid1 parition > > option A > md0 /boot > md1 sda + sdb (LVM on top of that) > > option B (data and system separately) > md0 /boot > md1 sda5 + sdb5 (logical partitions here, I just like them better) > md2 sda6 + sdb6 (again) > (for testing) > md3 sda7 + sdb7 (about 100 - 500 MB to test raid expansion, network > block devices, ata over ethernet, iscsi..... - you could do that with > option A too) > > md1 --> vg /system > md2 --> vg /data > md3 --> vg /playground > > I use system and data seperately because If I'm ever going to grow the > RAID or add another disk i can (hopefully) move/backup the data LVs to > the LVs on system for intermediate backup (that is if I don't prepare > things and have an offline media at hand) > > Pro: you can decide how much mirroring, etc, yadda, yadda you want for > the data VG (either thru LVM or mdadm or some other means) > > also you can later on add - as said above - nbd's iscsi devices and > some such to /playground for experiments (which I found no matter how > secure/stable I want a server to be happens in the lifetime - I'm > unfortunately not in the financial position to have redundant systems > available) > > hth > martin > > PS: I wouldn't use LVM mirroring - stay for the partion layout with > LVM. stay for data security with mdadm. AND DO MAKE BACKUPS :) > -- > http://noneisyours.marcher.name > http://feeds.feedburner.com/NoneIsYours > > > -- > To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org > >
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