Estou tentando converter meu atual RAID 1 para RAID0 + 1 e enfrentando problemas ao instalar o bootloader - por favor, dê uma olhada no que estou fazendo.
Minha configuração atual é RAID1 (2 * 10GB):
[root @ localhost ~] # mdadm --detail / dev / md0
/ dev / md0:
Version : 1.0
Creation Time : Thu May 8 20:13:26 2014
Raid Level : raid1
Array Size : 10279808 (9.80 GiB 10.53 GB)
Used Dev Size : 10279808 (9.80 GiB 10.53 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Wed May 14 21:49:34 2014
State : active
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : livecd.centos:0
UUID : 877ab4b2:7d4a61f7:a732e1c0:115c9ee5
Events : 72
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 18 1 active sync /dev/sdb2
Agora adiciono 2 * 2GB no meu vm - depois que eu degradar o meu RAID1; com a unidade com falha e a nova unidade que fiz raid0:
[root @ localhost ~] # mdadm / dev / md0 -f / dev / sdb2 -r / dev / sdb2
mdadm: set /dev/sdb2 faulty in /dev/md0
mdadm: hot removed /dev/sdb2 from /dev/md0
[root @ localhost ~] # fdisk / dev / sdc
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (1-261, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-261, default 261):
Using default value 261
Command (m for help): t
Selected partition 2
Hex code (type L to list codes): fd
Changed system type of partition 2 to fd (Linux raid autodetect)
Command (m for help): wq
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root @ localhost ~] # mkfs.ext4 / dev / sdc2
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
131072 inodes, 524112 blocks
26205 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=536870912
16 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 38 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root @ localhost ~] # mdadm --zero-superblock / dev / sdb2
CONSTRUINDO RAID0 para que eu possa fazer parte do RAID1
[root @ localhost ~] # mdadm --criar / dev / md5 --nome = 5 --homehost = livecd.centos -l0 -n 2 / dev / sdb2 / dev / sdc2
mdadm: /dev/sdb2 appears to contain an ext2fs file system
size=10279808K mtime=Wed May 14 21:28:53 2014
mdadm: /dev/sdc2 appears to contain an ext2fs file system
size=2096448K mtime=Thu Jan 1 04:00:00 1970
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md5 started.
[root @ localhost ~] # cat / proc / mdstat
Personalities : [raid0] [raid1]
md5 : active raid0 sdc2[1] sdb2[0]
12375552 blocks super 1.2 512k chunks
md0 : active raid1 sda2[0]
10279808 blocks super 1.0 [2/1] [U_]
bitmap: 1/1 pages [4KB], 65536KB chunk
md1 : active raid0 sdb1[1] sda1[0]
408576 blocks super 1.1 512k chunks
unused devices: <none>
ADICIONANDO RAID0 AO RAID1 DEGRADADO
[root @ localhost ~] # mdadm --add / dev / md0 / dev / md5
mdadm: adicionado / dev / md5
[root @ localhost ~] # cat / proc / mdstat
Personalities : [raid0] [raid1]
md5 : active raid0 sdc2[1] sdb2[0]
12375552 blocks super 1.2 512k chunks
md0 : active raid1 md5[2] sda2[0]
10279808 blocks super 1.0 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md1 : active raid0 sdb1[1] sda1[0]
408576 blocks super 1.1 512k chunks
unused devices: <none>
[root @ localhost ~] # mdadm --detail / dev / md0
/dev/md0:
Version : 1.0
Creation Time : Thu May 8 20:13:26 2014
Raid Level : raid1
Array Size : 10279808 (9.80 GiB 10.53 GB)
Used Dev Size : 10279808 (9.80 GiB 10.53 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Wed May 14 22:13:20 2014
State : active
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : livecd.centos:0
UUID : 877ab4b2:7d4a61f7:a732e1c0:115c9ee5
Events : 191
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
2 9 5 1 active sync /dev/md5
Agora é hora de instalar o bootloader - ESTE É O PASSO ONDE SOU FALHANDO E PRECISO DA SUA AJUDA.
[root @ localhost ~] # grub
Probing devices to guess BIOS drives. This may take a long time.
Unknown partition table signature
GNU GRUB version 0.97 (640K lower / 3072K upper memory)
[ Minimal BASH-like line editing is supported. For the first word, TAB
lists possible command completions. Anywhere else TAB lists the possible
completions of a device/filename.]
grub> find /boot/grub/grub.conf
find /boot/grub/grub.conf
(hd0,1)
grub> device (hd1) /dev/sdb
device (hd1) /dev/sdb
grub> root (hd1,1)
root (hd1,1)
Filesystem type is ext2fs, partition type 0xfd
grub> setup (hd1)
setup (hd1)
Checking if "/boot/grub/stage1" exists... no
Checking if "/grub/stage1" exists... no
Error 2t: Bad file or directory type
grub>
Onde devo instalar o bootloader no meu caso?
md5 tem / dev / sdb2 e / dev / sdc2 onde o carregador de inicialização deve ser instalado?
NON estes / dev / sdb2 ou / dev / sdc2 estão aparecendo sob o grub.
Uma vez que o bootloader é instalado para o raid0, então eu irei repetir o mesmo procedimento para o / dev / sda2.
Tags raid mdadm linux software-raid centos6