[linux-lvm] Using LVM with EMC Powerpath...

[Kelly Sauke]

Change the /etc/lvm/lvm.conf to filter out all the sd* devices and only see the
/dev/emcpower* devices.  Then when running the lvmdiskscan and pvscan it should
only see the emcpower devices.

Allen, Jack wrote:
> -----Original Message-----
> From: linux-lvm-bounces at redhat.com [mailto:linux-lvm-bounces at redhat.com]
> On Behalf Of Gary Mansell
> Sent: Friday, June 09, 2006 9:20 AM
> To: linux-lvm at redhat.com
> Subject: [linux-lvm] Using LVM with EMC Powerpath...
> 
> Hi,
> 
> I have a powerpath device that I want to encapsulate in LVM so that I
> can grow it in the future but when I try and create the physical volume,
> I get an error:
> 
> [root at ricserver ~]# powermt display dev=emcpowera
> Pseudo name=emcpowera
> CLARiiON ID=29R231J [Ricardo]
> Logical device ID=600601604EC01000E0FC2ED6AAF5DA11 [5FCALRAID5]
> state=alive; policy=CLAROpt; priority=0; queued-IOs=0
> Owner: default=SP B, current=SP B
> ========================================================================
> ======
> ---------------- Host ---------------   - Stor -   -- I/O Path -  --
> Stats ---
> ### HW Path                 I/O Paths    Interf.   Mode    State  Q-IOs
> Errors
> ========================================================================
> ======
>    1 lpfc                      sde       SP B0     active  alive      0
> 0
>    2 lpfc                      sdi       SP A1     active  alive      0
> 0
>    3 lpfc                      sdm       SP A0     active  alive      0
> 0
>    4 lpfc                      sdq       SP B1     active  alive      0
> 0
> 
> 
> When I try to create the physical volume:
> 
> [root at ricserver ~]# pvcreate /dev/emcpowera1
>   Physical volume "/dev/emcpowera1" successfully created
> 
> 
> [root at ricserver ~]# pvscan
>   Found duplicate PV QwbwqAi02sELEsEpefW6PNZ53XY8Wgo0:
> using /dev/emcpowera1 not /dev/sdq1
>   Found duplicate PV QwbwqAi02sELEsEpefW6PNZ53XY8Wgo0: using /dev/sde1
> not /dev/sdq1
>   Found duplicate PV QwbwqAi02sELEsEpefW6PNZ53XY8Wgo0: using /dev/sdi1
> not /dev/sdq1
>   Found duplicate PV QwbwqAi02sELEsEpefW6PNZ53XY8Wgo0: using /dev/sdm1
> not /dev/sdq1
>   PV /dev/sda2   VG VolGroup00   lvm2 [33.75 GB / 32.00 MB free]
>   PV /dev/sdq1                   lvm2 [266.42 GB]
>   Total: 2 [300.17 GB] / in use: 1 [33.75 GB] / in no VG: 1 [266.42 GB]
> 
> What am I doing wrong?
> 
> Any help gladly recieved
> 
> Regards
> 
> Gary Mansell
> 
> ====================
> Depending on the Linux version you are using, look at /etc/lvm/lvm.conf
> and do man on lvm.conf. Basically you need to exclude the /dev/sd*
> entries so the various LVM commands will not look at them. They will
> only look at the emcpower* names.
> 
> Jack Allen
> 
> 
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