在類型為 RAID1 GRUB2 的 LVM 卷上安裝 debian 8 找不到卷組
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我一整天都在嘗試在 Debian 8.5 上設置 LVM 類型的 Raid1 卷,但伺服器無法從它啟動。
首先是我從 GRUB2 得到的錯誤:
這是我所做的步驟,首先我啟動到 grml(Live-CD/Rescue-System):(工廠新 /dev/sda & /dev/sdb)
1. 然後我在兩個驅動器上創建分區:
- 512M 主要(Linux RAID 自動檢測)
- 20G 主 8e (Linux LVM)
2. 現在我為我的 /boot 創建 Raid 並格式化為 ext4
- mdadm –create /dev/md0 –level=1 –raid-disks=2 /dev/sda1 /dev/sdb1
- mkfs.ext4 /dev/md0
3. 卷組時間
pvcreate /dev/sda2 pvcreate /dev/sdb2 vgcreate vg0 /dev/sda2 /dev/sdb2
4. 我們來到卷並格式化它們
lvcreate -n root -L 20G vg0 --type raid1 lvcreate -n swap -L 4G vg0 --type raid1
root@grml ~ # lvscan ACTIVE '/dev/vg0/root' [10,00 GiB] inherit ACTIVE '/dev/vg0/swap' [4,00 GiB] inherit
mkfs.ext4 /dev/vg0/root mkswap /dev/vg0/swap
5.掛載卷
mount /dev/vg0/root /mnt cd /mnt mkdir boot mkdir proc mkdir dev mkdir sys mkdir home mount /dev/md0 boot/
- 創建 fstab
mkdir etc cd etc vi fstab
`proc /proc proc defaults 0 0 /dev/md0 /boot ext4 defaults 0 2 /dev/vg0/root / ext4 defaults 0 1 /dev/vg0/swap none swap defaults,pri=1 0 0`
7. debootstrap debian jessie
debootstrap --arch amd64 jessie /mnt ftp://ftp.de.debian.org/debian/
8.安裝一些必需品
mount -t proc none /mnt/proc mount -o bind /dev /mnt/dev mount -o bind /sys /mnt/sys
9. chroot 進入閃亮的新 debian
chroot /mnt /bin/bash
10.設置新的root密碼
passwd
11. 將 contrib 和 non-free 添加到 sourcelist
nano /etc/apt/sources.list
deb http://ftp.de.debian.org/debian jessie main contrib non-free
12.安裝包
apt-get install mdadm openssh-server lvm2 locales ntp vim-nox firmware-realtek
13.配置語言環境
dpkg-reconfigure locales tzdata
14.安裝核心
apt-get install linux-image-amd64
15.grub2
apt-get install grub2
選擇 sda & sdb 作為安裝設備
grub-install --no-floppy /dev/sda grub-install --no-floppy /dev/sdb update-grub /dev/md0 update-initramfs -u
16.退出並重啟
exit shutdown -r now
也許任何人都可以幫助我,我希望我只會忘記一些事情。
根據Redhat 工作人員的說法:
Grub 不支持 LVM RAID1(它只支持 RAID 4/5/6 類型 IIRC)。
Debian 8 有一些舊的內部,你可能會遇到同樣的限制,我想找到一些關於 Grub 限制的官方資訊,不幸的是我失敗了。
Re: [linux-lvm] GRUB boot problem with lvm mirror type raid1 From: Peter Rajnoha <prajnoha redhat com> To: gk180984 interia pl Cc: LVM general discussion and development <linux-lvm redhat com> Subject: Re: [linux-lvm] GRUB boot problem with lvm mirror type raid1 Date: Mon, 14 Apr 2014 11:40:36 +0200
> > >
> On 04/14/2014 10:42 AM, gk180984 interia pl wrote: > Hi > I want to ask it is possible boot root file system (via GRUB) from LVM > RAID1 volume? > I can boot root file system (with /boot) from linera LVM volume and > from mirror volume, but when I create raid1 mirror GRUB can't boot from it: > > lvconvert --type raid1 -m1 gsys/vsys > > LVM mirror is work: > lvconvert -m1 gsys/vsys > > I have two disk and use only LVM, not other raid software. > GRUB have lvm module. > >
> >Grub doesn't support LVM RAID1 (it supports only RAID 4/5/6 type IIRC). However, I don't recommend using /boot on LVM at the moment since grub support for LVM is limited and unofficial. There's a plan to add official and more robust support though - there are ongoing discussions between grub and LVM team...