Replace mirrored root disk in Itanium server: Without breaking mirror


(THIS IS WITHOUT  BREAKING MIRROR , REPLACE THE HOT SWAP DISK)

Pre activity steps: Take the below command o/p

# lvlnboot –v

#setboot

#pvdisplay -v /dev/disk/disk?? | more

#vgcfgbackup /dev/vg00

#vgexport -p -v -m /tmp/vg00.map /dev/vg00


Replacement steps: (This is for Mirrored alternate boot disk replacement)


Step 1: #pvchange -a N /dev/dsk/disk2_p2 (Deactivate the disk)


Step 2: Then remove the failed disk and  replace with  a new disk

Stpe 3: #ioscan -m lun

(check the new lun number for new disk)

step 4: #vi /tmp/partfile 

3
EFI 500MB
HPUX 100%
HPSP 400MB

(Dont copy paste, edit the file manually)

Step 5: #idisk -wf /tmp/partfile /dev/rdisk/disk32

( Lets consider the new disk lun id as 32)

Step 6 : #insf -e -C disk -I 32

(create a disk file for new lun)

Step 7 : # io_redirect_dsf -d /dev/disk/disk2 -n /dev/disk/disk32

(change the old path to new disk)

Step 8 : # ioscan -funNC disk

(verify the change)

step 9 : #vgcfgrestore -n /dev/vg00 /dev/rdisk/disk2_p2

(restore the VG to the new disk)

step 10 : #pvchange –a y /dev/disk/disk2_p2

(activate the disk)

step 11: #vgchange -a y /dev/vg00

step 12 : #vgsync vg00

(resync the lvols)

step 13:  # mkboot -e -l /dev/rdisk/disk2

step 14:  # efi_fsinit -d /dev/rdisk/disk2_p1

(initailize the FAT FS on EFI partition)

step 15: # efi_cp -d /dev/rdisk/disk3_p1 -u /EFI/HPUX/AUTO /tmp/auto

(cat /tmp/auto - check the auto file content)

step 16 : #mkboot -a "boot vmunix -lq" /dev/rdisk/disk2

(change the auto file content)

step 17 : # efi_ls -d /dev/rdisk/disk2_p1

step 18 : # efi_ls -d /dev/rdisk/disk??_p3 /EFI/HP  

(chk this for primary boot disk , To check whether diag utilities are there on primary boot disk)

step 19 : #dd if=/dev/rdisk/disk3_p3 of=/dev/rdisk/disk2_p3 bs=1024k

(copy the diag utility from primary boot disk to sec boot disk)

step 20 : #lifls -l /dev/rdisk/disk2_p2

step 21 : #setboot -a "lun path of sec disk"
  



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