Gentoo Archives: gentoo-user

From: "Stefan G. Weichinger" <lists@×××××.at>
To: gentoo-user@l.g.o
Subject: [gentoo-user] best practise for 4 disks ... redundancy
Date: Wed, 11 Mar 2015 06:46:45
Message-Id: 54FFE4A2.3060008@xunil.at
1 greetings again
2
3 yesterday I received a shiny new server for a client.
4
5 It brings 4 x 1 TB SATA disks, is capable of UEFI and I started setting
6 it up.
7
8 GPT partitioning, small partition(s) for the ESP, some swap, and bigger
9 partitions of type fd=raid for creating 2 mdadm-raids (rootfs and data)
10 with level 6.
11
12 ok so far.
13
14 Then I spent some hours fiddling with grub2, gummiboot et al to get that
15 box booting up fine. dracut doesn't assemble the rootfs-raid etc etc ...
16 -> fun
17
18 What the question is in general:
19
20 even if I manage to have it booting via UEFI from /dev/sda1 or so ... I
21 still have this single point of failure as the vfat-partitioned ESP is
22 on one physical disk only.
23
24 I would like to set it up in a way that it boots even when the /dev/sda
25 dies ...
26
27 Maybe I have to go the BIOS way and have an ext2-boot-raid1 over 4
28 disks/partitions? I did that on other servers back then.
29
30 What is the up-to-date and recommended way of achieving this?
31 How do you gentoo-users do these things?
32
33 I am still at the start with this server and don't mind backing up the
34 rootfs and start from scratch with partitioning ;)
35
36 Thanks, Stefan

Replies

Subject Author
Re: [gentoo-user] best practise for 4 disks ... redundancy Neil Bothwick <neil@××××××××××.uk>