Does vgcfgrestore of replaced boot disk automatically provide for boot header in PV?

[Ralph Grothe]

Hello,

I have the recepie for root disk replacement from the Cookbook's LVM chapter at my disposal.

However, since it doesn't mention a "pvcreate -B " I assume that the vgcfgrestore of the failed disk from LVM conf will automatically initialize the replacment PV such that the required extra space for boot data will be provided for.

I couldn't find any remarks confirming my assumption in man vgcfgrestore.

Would I have to initialize the new disk with a prior pvcreate -B?

Well I think it wouldn't hurt,
just to be on the safe side.
Would it?

[melvyn burnard · Accepted solution]

yes it does.
If you read the backup file using vgcfgrestore you can see what disks were bootable at the time vgcfgbackup ran
e.g.
vgcfgrestore -n vg00 -l

Not sure if you have seen this, but it may also be of use
http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

[Ralph Grothe]

Hi Melvyn,

the failed disk shows up in the vgcfgbackup as being a boot disk.
Thus a vgcfgrestore will most likely inititalize the PV with boot space.

# vgcfgrestore -l -n vg00
Volume Group Configuration information in "/etc/lvmconf/vg00.conf"
VG Name /dev/vg00
---- Physical volumes : 2 ----
/dev/rdsk/c1t2d0 (Bootable)
/dev/rdsk/c2t2d0 (Bootable)


Thanks also for providing the link to the fine LVM whitepaper about failed disks.
I haven't seen this one yet.
So it must be a rather new release?

From what I've read by quickly browsing through it I fear LVM OLR will only be available for 11i?

Too sad this box runs 11.00,
but I'm prepared to fix manually.