dell电脑装linux raid无法安装,linux – 无法将grub安装到RAID1(md0)

宰父衡

2023-12-01

我的Ubuntu 12.04 LTS上有一个RAID1阵列,几天前我的/ sda硬盘已被更换.我用这个命令来代替：

# go to superuser

sudo bash

# see RAID state

mdadm -Q -D /dev/md0

# State should be "clean,degraded"

# remove broken disk from RAID

mdadm /dev/md0 --fail /dev/sda1

mdadm /dev/md0 --remove /dev/sda1

# see partitions

fdisk -l

# shutdown computer

shutdown now

# physically replace old disk by new

# start system again

# see partitions

fdisk -l

# copy partitions from sdb to sda

sfdisk -d /dev/sdb | sfdisk /dev/sda

# recreate id for sda

sfdisk --change-id /dev/sda 1 fd

# add sda1 to RAID

mdadm /dev/md0 --add /dev/sda1

# see RAID state

mdadm -Q -D /dev/md0

# State should be "clean,degraded,recovering"

# to see status you can use

cat /proc/mdstat

这是同步后我的mdadm输出：

/dev/md0:

Version : 0.90

Creation Time : Wed Feb 17 16:18:25 2010

Raid Level : raid1

Array Size : 470455360 (448.66 GiB 481.75 GB)

Used Dev Size : 470455360 (448.66 GiB 481.75 GB)

Raid Devices : 2

Total Devices : 2

Preferred Minor : 0

Persistence : Superblock is persistent

Update Time : Thu Nov 1 15:19:31 2012

State : clean

Active Devices : 2

Working Devices : 2

Failed Devices : 0

Spare Devices : 0

UUID : 92e6ff4e:ed3ab4bf:fee5eb6c:d9b9cb11

Events : 0.11049560

Number Major Minor RaidDevice State

0 8 1 0 active sync /dev/sda1

1 8 17 1 active sync /dev/sdb1

在构建完成后“fdisk -l”表示我没有有效的分区表/ dev / md0.

这是我的fdisk -l输出：

Disk /dev/sda: 500.1 GB,500107862016 bytes

255 heads,63 sectors/track,60801 cylinders,total 976773168 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00057d19

Device Boot Start End Blocks Id System

/dev/sda1 * 63 940910984 470455461 fd Linux raid autodetect

/dev/sda2 940910985 976768064 17928540 5 Extended

/dev/sda5 940911048 976768064 17928508+ 82 Linux swap / Solaris

Disk /dev/sdb: 500.1 GB,total 976773168 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000667ca

Device Boot Start End Blocks Id System

/dev/sdb1 * 63 940910984 470455461 fd Linux raid autodetect

/dev/sdb2 940910985 976768064 17928540 5 Extended

/dev/sdb5 940911048 976768064 17928508+ 82 Linux swap / Solaris

Disk /dev/md0: 481.7 GB,481746288640 bytes

2 heads,4 sectors/track,117613840 cylinders,total 940910720 sectors

Units = sectors of 1 * 512 = 512 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/md0 doesn't contain a valid partition table

这是我的grub安装输出：

root@answe:~# grub-install /dev/sda

/usr/sbin/grub-setup: warn: Attempting to install GRUB to a disk with multiple partition labels or both partition label and filesystem. This is not supported yet..

/usr/sbin/grub-setup: error: embedding is not possible,but this is required for cross-disk install.

root@answe:~# grub-install /dev/sdb

Installation finished. No error reported.

一些版本信息：

grub-install (GRUB) 1.99-21ubuntu3.4

3.2.0-32-generic #51-Ubuntu SMP Wed Sep 26 21:33:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

所以

1)“update-grub”只找到/ sda和/ sdb Linux,而不是/ md0

2)“dpkg-reconfigure grub-pc”说“GRUB无法安装以下设备/ dev / md0”

我无法加载我的系统,除了从/ sdb1(和手动,而不是自动),并在DEGRADED模式…

有人可以解决这个问题吗？我对此非常头疼.

更新：用零擦除新磁盘后,用sfdisk update-grub复制分区说：

root@answe:~# grub-install /dev/sda