[linux-lvm] Changing Controller and also device names

[linux-lvm] Changing Controller and also device names

[Per Kristiansen]

Got a fun problem here.

I have a IDE controller that I have hooked up 7 disks to.

Now I've found that the controller is acting VERY strange, and want to exchange it with
another one.


Today I have:

PV Name (#)           /dev/hdk1 (5)
PV Status             available / allocatable
Total PE / Free PE    3680 / 0

PV Name (#)           /dev/hdl1 (7)
PV Status             available / allocatable
Total PE / Free PE    2980 / 0

PV Name (#)           /dev/hdi1 (1)
PV Status             available / allocatable
Total PE / Free PE    3680 / 0

PV Name (#)           /dev/hdj1 (2)
PV Status             available / allocatable
Total PE / Free PE    3680 / 0

PV Name (#)           /dev/hdg1 (4)
PV Status             available / allocatable
Total PE / Free PE    3576 / 0

PV Name (#)           /dev/hde1 (6)
PV Status             available / allocatable
Total PE / Free PE    3576 / 0

PV Name (#)           /dev/hdf1 (3)
PV Status             available / allocatable
Total PE / Free PE    3576 / 0


Do I need to take SPECIAL care to get the same device names  when I move the disks to the new controller
or can it find the data it needs using vgscan/pvscan ?

and no...
no raid or anything..it's not really a critical server as everything is backed up everyday.

-- 
Per Kristiansen
per@gathering.org

Re: [linux-lvm] Changing Controller and also device names

[Joe Thornber]

On Wed, Nov 06, 2002 at 02:25:54PM +0100, Per Kristiansen wrote:
> Do I need to take SPECIAL care to get the same device names  when I move the disks to the new controller
> or can it find the data it needs using vgscan/pvscan ?

vgscan looks at the UUID on each disk rather than relying on the
device names.  So, no, you don't have to do anything special.

- Joe