Re: RAID1 all bootable
On Wed, Mar 06, 2013 at 08:03:12PM +0100, Francesco Pietra wrote:
> Sorry, I forgot both the list and the appropriate output;
>
> root@....:/home/francesco# fdisk -l
>
> 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 / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x000f1911
>
> Device Boot Start End Blocks Id System
> /dev/sda1 * 2048 385023 191488 fd Linux raid autodetect
> /dev/sda2 385024 976166911 487890944 fd Linux raid autodetect
>
> Disk /dev/sdb: 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 / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x0000cca6
>
> Device Boot Start End Blocks Id System
> /dev/sdb1 * 2048 385023 191488 fd Linux raid autodetect
> /dev/sdb2 385024 976166911 487890944 fd Linux raid autodetect
OK, so that is the normal setup with partitions. grub-install /dev/sda
and /dev/sdb should have worked fine (but of course it has to be run
from the system, not some other thing like knoppix or the like) or from
a chroot into the system even if booted from something else.
> Disk /dev/md0: 195 MB, 195887104 bytes
> 2 heads, 4 sectors/track, 47824 cylinders, total 382592 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/md0 doesn't contain a valid partition table
>
> Disk /dev/md1: 499.5 GB, 499465912320 bytes
> 2 heads, 4 sectors/track, 121939920 cylinders, total 975519360 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/md1 doesn't contain a valid partition table
>
> Disk /dev/mapper/vg1-root: 998 MB, 998244352 bytes
> 255 heads, 63 sectors/track, 121 cylinders, total 1949696 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/mapper/vg1-root doesn't contain a valid partition table
>
> Disk /dev/mapper/vg1-swap: 15.0 GB, 14998831104 bytes
> 255 heads, 63 sectors/track, 1823 cylinders, total 29294592 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/mapper/vg1-swap doesn't contain a valid partition table
>
> Disk /dev/mapper/vg1-usr: 30.0 GB, 29997662208 bytes
> 255 heads, 63 sectors/track, 3647 cylinders, total 58589184 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/mapper/vg1-usr doesn't contain a valid partition table
>
> Disk /dev/mapper/vg1-opt: 9999 MB, 9999220736 bytes
> 255 heads, 63 sectors/track, 1215 cylinders, total 19529728 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/mapper/vg1-opt doesn't contain a valid partition table
>
> Disk /dev/mapper/vg1-var: 9999 MB, 9999220736 bytes
> 255 heads, 63 sectors/track, 1215 cylinders, total 19529728 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/mapper/vg1-var doesn't contain a valid partition table
>
> Disk /dev/mapper/vg1-tmp: 2998 MB, 2998927360 bytes
> 255 heads, 63 sectors/track, 364 cylinders, total 5857280 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/mapper/vg1-tmp doesn't contain a valid partition table
>
> Disk /dev/mapper/vg1-home: 430.0 GB, 430000046080 bytes
> 255 heads, 63 sectors/track, 52277 cylinders, total 839843840 sectors
> Units = sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Disk /dev/mapper/vg1-home doesn't contain a valid partition table
> root@....:/home/francesco#
>
> root@.....:/home/francesco# cat /proc/mdstat
> Personalities : [raid1]
> md1 : active raid1 sda2[0] sdb2[1]
> 487759680 blocks super 1.2 [2/2] [UU]
>
> md0 : active raid1 sda1[0] sdb1[1]
> 191296 blocks super 1.2 [2/2] [UU]
>
> unused devices: <none>
> root@.....:/home/francesco#
>
> francesco@.....:~$ df -h
> Filesystem Size Used Avail Use% Mounted on
> rootfs 938M 185M 705M 21% /
> udev 10M 0 10M 0% /dev
> tmpfs 807M 628K 807M 1% /run
> /dev/mapper/vg1-root 938M 185M 705M 21% /
> tmpfs 5.0M 0 5.0M 0% /run/lock
> tmpfs 1.6G 84K 1.6G 1% /run/shm
> /dev/md0 176M 19M 148M 11% /boot
> /dev/mapper/vg1-home 395G 284G 91G 76% /home
> /dev/mapper/vg1-opt 9.2G 1.5G 7.3G 17% /opt
> /dev/mapper/vg1-tmp 2.8G 69M 2.6G 3% /tmp
> /dev/mapper/vg1-usr 28G 4.3G 22G 17% /usr
> /dev/mapper/vg1-var 9.2G 840M 7.9G 10% /var
> francesco@.....:~$
>
> This is the currest status.
> "grub-install /dev/sdb" was run with that situation (deriving from
> install with amd64 wheezy B$ installer downloaded on Feb 1, 2013. That
> installation ended with
>
> grub-install /dev/sda
> update grub
That should work without issue.
--
Len Sorensen
Reply to: