help fo boot disk failure recovery

[GNOM]

thanks all for your replies.

Finaly I reinstalled the system an old ignite. Now the system boot fine but I have another problem. Then system give different special files for external LUNS (C5t1d0 and C6t0d0 instead of C4t1d0 and C5t0d0). So I'm not able to import old VG.

I tried to remove special files and recreate them but no change.

My question is if it's possible to create manualy a special file for a device. Exple : for the disk in path 0/4/0/0.1.0 with instance 3 create the special fife /dev/dsk/C4t1dO ?

Regards

[Torsten.]

You don't really need to modify the device files, but you can import the "old vg" with new device files.

What is this command telling you?

# vgscan -p -v

[Avinash20]

Do the folloing

# strings /etc/lvmtab
# mv /etc/lvmtab /etc/lvmtab.
# vgscan -v
# strings /etc/lvmtab

If everything all-right
# vgchange -a y
# fsck -y
# mount -a

[Johnson Punniyalingam]

My question is if it's possible to create manualy a special file for a device. Exple : for the disk in path 0/4/0/0.1.0 with instance 3 create the special fife /dev/dsk/C4t1dO ?

NO.

vgimport "device file" much better apporach.

Example:-

# Scan your current system to identify all disks by their volume groups.

/usr/sbin/vgscan -p -v

# Import the LVM disk to the current system, citing the block device special file name you noted when the system booted up and the mapfile you created when invoking vgexport at the beginning of the procedure. You can preview the effect of the import by using the -p option.

vgimport -pv -m mapfile /dev/vg06 block_device_special_file
vgimport -v -m mapfile /dev/vg06 block_device_special_file

Thanks,
Johnson