Boot disk

[Chandrasekar_5]

Hello

I know We can identify the disk using ioscan -func disk , How to identify new disk added .

If its is mirred how to check which is primary & seconday .

If primary fails how to boot from alternate ,after primary recoverd how to change it.

[Rick Garland]

The 'lnlnboot -v' command will provide most of the info you seek.

[Torsten.]

Hi,

"I know We can identify the disk using ioscan -func disk , How to identify new disk added."

If you run "ioscan -fn" after you installed a new disk online, you will see a disk entry without device files. This is your new disk.
You should create device files at this point using insf -H ... (see man insf).

For question regarding disk replacement see

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

[Vasu Viswanadha]

Hi,

To boot off an alternate disk, from BCH / PDC, use " bo " . If the disk is already designated as alternate boot disk, just a " bo alt" will do.

Once the primary disk is recovered / replaced, use 'setboot' to redefine the Primary boot path.


BR

Vasu

[John Guster]

"If its is mirred how to check which is primary & seconday ."
vgdisplay -v vgname===tells if Lvols are mirrored
lvdisplay -v /dev/vgname/lvol1===tells mirror status. Normally 1st column is pri, 2nd is alt. In fact no difference between pri or alt.
We only define primary boot disk, alternate boot disk. The primary boot disk is defined in several places: /stand/bootconf, setboot, lvlnboot -v vg00 if all configured correctly.