XP disk device names changed

[Rick Garland]

Hi all:

XP256 on rp8400 with 2 vpars.
The fiber was swapped around and the box was rebooted during this time.

Now, the disk device names have changed. How would I map the old names to the new names?

[Rick Garland]

ping

How do I map the new disk device names?

[Pete Randall · Accepted solution]

Rick,

I assume these are LVM volumes. Would vgscan help?


Pete

[David Child_1]

Since the only thing that should have changed when you swapped cables around is the controller number I would start there. Of course it depends on how many LUNs you have if this would be effective or not.

So if you had;
c4t4d5, c4t4d6, c9t2d0, c9t2d1

it might now look like;
c7t4d5, c7t4d6, c8t2d0, and c9t2d1

Of course if you have a lot of LUNs you will have multiple cXt4t5's, etc. so that wouldn't work out too well.

You don't happen to have the output of xpinfo prior to the cable swaps do you? You could then use that to cross-reference.

As already mentioned, if these are being used in volume groups you should be able to use vgscan to possibly recover.

David

[Rick Garland]

Wish I had the previous configs. But I was given this system as is - no prior knowledge of its existence told to "fix it"

The vgscan did the trick. Many thanks for the reminder. A command that gets rarely used but it has saved countless systems!

Thanks all.