EMC 5830 --> EMC 8530 Migration

[Jim Mallett]

This is a continuation from an old thread, I just wanted to throw the steps I'm going to take out for review.
I'm migrating data from an existing EMC 5830 to a new EMC 8530, and also switching SCSI to Fiber. I will have the luxury of having both Symms presented to me for a week. I'm going to go with a host based copy rather than the array based copy so I can change some of my LVM settings.

- Shut down database.
- BACKUPS!
- Unmount all affected filesystems.
- Deactivate VGs.
- Export VGs (using -v -s -m)
- Create temporary VGs (mkdir/mknod).
- Import original VGs to the temporary VG space.
- Create temporary mount points and mount the original LVs to them.
- Create the new VGs/LVs with better LVM settings, mount them to the original mount points.
- Copy the data.
- Remove the original VGs and temporary mount points.

Unrelated:
Does rdist still have a 2G file size limit?
Anybody have a good document outlining the steps to mirror a root disk (there are probably plenty out there, just haven't had time to search)?

Thanks in advance.....and thanks to those that directed me in my previous thread.
Jim Mallett

[Mark Greene_1 · Accepted solution]

to mirror a root disk on 11.0 (be sure to adjust the /dev/ references for your particular system):

reduced all lvols on the disk: lvreduce -m 0 /dev/dsk/c2t2d0

removed the disk from the volume group: vgreduce /dev/vg00 /dev/dsk/c2t2d0

reserve a boot area on the disk: pvcreate -B /dev/rdsk/c2t2d0

make the boot area: mkboot -v /dev/dsk/c2t2d0

copy the boot files: mkboot -a "hpux -lq (;0)/stand/vmunix" /dev/dsk/c2t2d0

add the disk back to the volume group: vgextend /dev/vg00 /dev/dsk/c2t2d0

verify that the disk is bootable:
lvlnboot -v
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c1t2d0 (0/0/1/1.2.0) -- Boot Disk
/dev/dsk/c2t2d0 (0/0/2/0.2.0)
Boot: lvol1 on: /dev/dsk/c1t2d0
Root: lvol3 on: /dev/dsk/c1t2d0
Swap: lvol2 on: /dev/dsk/c1t2d0
Dump: lvol2 on: /dev/dsk/c1t2d0, 0


verify that the boot information is there:
lifls -Cl /dev/dsk/c2t2d0|pg
volume ISL10 data size 7984 directory size 8 99/10/28 15:23:53
filename type start size implement created
===============================================================
ISL -12800 584 240 0 99/10/28 15:23:53
AUTO -12289 824 1 0 99/10/28 15:23:53
HPUX -12928 832 800 0 99/10/28 15:23:53
PAD -12290 1632 1700 0 99/10/28 15:23:54
LABEL BIN 3336 8 0 02/05/28 10:08:10

add the logical volumes back to the disk:
lvextend -m 1 /dev/vg00/xxxxx /dev/dsk/c2t2d0

The first three lvol's have to be:
/stand
/
/swap

(confirm by comparing output from lvlnboot -v & bdf)

repeat for each remaining logical volume in the volume group


HTH
mark