Hi, 2007/10/17, Alex Samad <[EMAIL PROTECTED]>: > 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 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 [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
