A disk from one vg is "NO_HW" from "ioscan -funC disk"

[Devender Khatana]

Hi,

The disk at which the LED is glowing continuously as supected to be the defective one, but it is not the case always. If you are not sure that the best way to do is to physically remove it and see in ioscan if something else do not show starting NO_HW. Once you are confirm that this is the disk then you can go ahead in replacing it.

Plug in new disk in same slot. and use vgcfgrestore to make it accessible to the VG.
#vgcfgrestore -n vg05 /dev/rdsk/c0t15d0

Now create new file systems on all the LVOLs which were there on this disk and were not mirroed. From the output I found these to be lvol4,5,6,7,8. Confirm this once and then mount the file systems and restore backup.
#newfs -F vxfs /dev/vg05/rlvol4

Repeat for other LVOLs and
#mountall

#bdf to confirm.

This will not disturb other LVOLs in the VG.

Here is official disk replacement guide for reference.
http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

HTH,
Devender

[Mohammad Jeffry]

tq. you guys rocks!

[Josiah Henline]

Please note the usage of "ioscan".

If you reseat a drive, running "ioscan -funCdisk" will not scan the hardware. The "-u" option scans the kernel for a list of usable devices. It does not physically scan the hardware.

Try "ioscan -fnCdisk" instead. It will scan the hardware an see if the disk is responding after a reseat.