Failed Primary Disk Mirror Steps on RP4440

[Sharjeel Saleem]

HI All,

I am going to replace failed mirror disk of RP4440 by following procedure. Can aybody validate this please.

==============================================================================

Backup below files prior the activity (Just for safer side)

1.cp /etc/lvmtab /etc/lvmtab.bkp
2.cp /etc/lvmconf/vg00.conf /tmp/vg00.conf.bkp

================================================================================

1. Remove the failed disk and replace it with new disk. Wait for sometime (2-3mins).
2. Check ioscan -fnC disk command to verify if the disk is getting detected. If not run "insf -e" and then check.
3. Once the disk is detected verify it with diskinfo command - to confirm if its shows correct size.

4.Restore the LVM reserved areas.
# vgcfgrestore –n vg00 /dev/rdsk/c2t0d0

4. Repopulate the LIF area.
# mkboot /dev/rdsk/c2t0d0

5. Change the AUTO file contents to hpux –lq
# mkboot –a “hpux –lq” /dev/rdsk/c2t0d0

6. Reactivate the VG to recognize the recovered disk
# vgchange –a y vg00

7. Resynchronize mirrors
# vgsync vg00

8.Check vgdisplay and confirm all lvols are in sync.
# vgdisplay –v /dev/vg00

9 Update BDRA

# lvlnboot -R

Regards, Sharjeel

[Timothy P. Jackson]

Hi Sharjeel,

You may need to activate the PV before it will accept the vgcfgrestore...

3. Once the disk is detected verify it with diskinfo command - to confirm if its shows correct size.

4.Restore the LVM reserved areas.
# vgcfgrestore –n vg00 /dev/rdsk/c2t0d0

3.5 do a pvdisplay and make sure the physical volume is active

Also, check and make sure the dump,swap are correct

lvlnboot -v

A good resource for replacing any disk is "When Good Disks Go Bad" it will guide you through almost any disk replacement.

Hope you get this in time.

Tim

[Bill Hassell]

Before you remove the disk, take the disk out of active LVM service with:

pvchange -a n /dev/dsk/c2t0d0

If your version of pvchange does not have -a as an option, you are way behind on patches.