recovery from an ignite tape

[Nappy_1]

I'll replace 36GB disks (vg00) on a rp8400 by 72GB disks using a recovery from a make_tape_recovery.
the server contains 2 other disks configured on vg01.

i'd like to khnow which disk will be used on the recovery? i'm afraid that the recovery could erase vg01 disks

[Torsten.]

If you have the new disks in the same slots as the original boot disks, your data disks will not be touched.
To be really sure, you can either run ignite interactively or pull out the data disks.

[Srikanth Arunachalam]

Hi Nappy,

Make sure that the physical device associated to the vg00 is different from that of vg01 (this can be done using ioscan -fnkC disk).

You can use a tool called lvm.11 to help. The tool prints LVM structural information you could use to verify a disk.

The tool is attached.

1) Run the command against the suspect disk device files:

# lvm11 -d /dev/rdsk/c#t#d# > /tmp/c#t#d#.out



2) Then look at the TOP of the output for "The physical volume ID."

This field will be the same if it is the same disk (alternate path).



Example: # head /tmp/c#t#d#.out

Primary LVMREC fields

PSN == Physical Sector Number == DEV_BSIZE Units == Kb's

All units are Kb's except where specified

/* LVM ID */LVMREC01

/* The physical volume ID. */ 479693391 1065185644 <------COMPARE ----------<

i.e. pvcreate(1m) was run on CPU with ID 479693391 at Fri Oct 3 08:54:04 2003

/* The volume group ID. */ 479693391 1065185645

i.e. vgcreate(1m) was run on CPU with ID 479693391 at Fri Oct 3 08:54:05 2003

/* Last physical sector number. */ 4194156

/* Physical Volume Number in VG */ 0


If the physical device associated are unique, you are safe to restore from ignite make_tape_recovery.

Thanks,
Srikanth