Now I have a good mirror in place. Now the question is that when I try to boot the system using the New Hard disk /dev/sda from the BIOS, it comes to halt and nothing shows up except blinking cursor on blank screen and I have to reboot the system to select the /dev/sdb disk to boot from. This is happening for the normal reboot as well, in such a way that i have to select the disk manually everytime the system is rebooted.
Can someone please guide how the other disk can be grub-recorgnized and how I can make a seamless reboot..
Below is the output from mdadmin --detail command
Code:
mdadm --detail /dev/md{1..3}
/dev/md1:
Version : 1.2
Creation Time : Wed Jun 5 19:02:13 2013
Raid Level : raid1
Array Size : 19514240 (18.61 GiB 19.98 GB)
Used Dev Size : 19514240 (18.61 GiB 19.98 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Sun Oct 6 01:00:02 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : busyboy:1 (local to host busyboy)
UUID : 24d0bec2:c86a4b42:2551491c:ce21cac7
Events : 50
Number Major Minor RaidDevice State
0 8 18 0 active sync /dev/sdb2
2 8 2 1 active sync /dev/sda2
/dev/md2:
Version : 1.2
Creation Time : Wed Jun 5 19:20:37 2013
Raid Level : raid1
Array Size : 488149824 (465.54 GiB 499.87 GB)
Used Dev Size : 488149824 (465.54 GiB 499.87 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Thu Oct 10 13:47:44 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : busyboy:2 (local to host busyboy)
UUID : ab235953:879428e8:d46af252:13ed66d3
Events : 399197
Number Major Minor RaidDevice State
0 8 19 0 active sync /dev/sdb3
2 8 3 1 active sync /dev/sda3
/dev/md3:
Version : 1.2
Creation Time : Wed Jun 5 19:20:48 2013
Raid Level : raid1
Array Size : 2422320960 (2310.11 GiB 2480.46 GB)
Used Dev Size : 2422320960 (2310.11 GiB 2480.46 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent
Update Time : Thu Oct 10 13:47:46 2013
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Name : busyboy:3 (local to host busyboy)
UUID : 2a22160c:72b4f201:de0acb10:79566f08
Events : 717493
Number Major Minor RaidDevice State
0 8 20 0 active sync /dev/sdb4
2 8 4 1 active sync /dev/sda4
Assuming you are using GRUB2, pre-EFI firmware, i.e. a BIOS, and a GPT disk, do you see any sign of a BIOS Boot Partition Table? Partition type should be EF02.
Can you please suggest what that means to Populate the BIOS Partition. I'm not aware of this mechanism.
Regards,
Nasir
---------- Post updated Oct 22nd, 2013 at 01:52 PM ---------- Previous update was Oct 21st, 2013 at 06:37 PM ----------
Quote:
Originally Posted by fpmurphy
Assuming you are using GRUB2, pre-EFI firmware, i.e. a BIOS, and a GPT disk, do you see any sign of a BIOS Boot Partition Table? Partition type should be EF02.
Hi fpmurphy,
I have below given output from the gdisk command for the disk being replaced here.. both replaced and the good disk ( the disk which replicated its data to replaced one )
Code:
Disk /dev/sda: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 5B747213-253B-4BCD-9022-AC20F6A3EB6C
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 2925 sectors (1.4 MiB)
Number Start (sector) End (sector) Size Code Name
1 2048 4095 1024.0 KiB EF02
2 4096 39065599 18.6 GiB FD00
3 39065600 1015627775 465.7 GiB FD00
4 1015627776 5860532223 2.3 TiB FD00
Command (? for help): i
Partition number (1-4): 1
Partition GUID code: 21686148-6449-6E6F-744E-656564454649 (BIOS boot partition)
Partition unique GUID: 2B25F37D-4DCC-4D62-842A-322176A30AD9
First sector: 2048 (at 1024.0 KiB)
Last sector: 4095 (at 2.0 MiB)
Partition size: 2048 sectors (1024.0 KiB)
Attribute flags: 0000000000000000
Partition name: ' '
and below is the output for the disk ( which is intact till now and I replicated this disk to /dev/sda above )
Code:
Disk /dev/sdb: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 52E97A2C-D5CE-4FBE-8853-9A17F86DC779
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 2925 sectors (1.4 MiB)
Number Start (sector) End (sector) Size Code Name
1 2048 4095 1024.0 KiB EF02
2 4096 39065599 18.6 GiB FD00
3 39065600 1015627775 465.7 GiB FD00
4 1015627776 5860532223 2.3 TiB FD00
Command (? for help): i
Partition number (1-4): 1
Partition GUID code: 21686148-6449-6E6F-744E-656564454649 (BIOS boot partition)
Partition unique GUID: 95307A72-04D0-48A8-B676-FD04F74E1F62
First sector: 2048 (at 1024.0 KiB)
Last sector: 4095 (at 2.0 MiB)
Partition size: 2048 sectors (1024.0 KiB)
Attribute flags: 0000000000000000
Partition name: ' '
OSLevel: 5300-10-02-0943
System Model: IBM,8203-E4A
Power 6
==
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