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Can anyone help me with SnapDrive for Linux?

I’m using CentOS 4.4 kernel 2.6.9-42.0.10, iSCSI initiator 4.0.3.0-4, latest Host Utilities Kit and latest SnapDrive for Linux.  Filer is running ONTAP 7.2.

I can connect to the filer with no problems and mount drives on my Linux server provided I don’t use LVM.  When I try to create LUNs using LVM I get a weird error.  This is the command I’m using:

[root@vader ~]# snapdrive storage create -fs /filerlun2 -dg netappdg2 -lun fas250:/vol/linuxlun/lun1 lun2 lun3 -lunsize 1g

0001-417 Command error: The following names are already in use: netappdg2. Please specify other names.

There are absolutely no disk group names called this already:

[root@vader ~]# lvscan

  ACTIVE            '/dev/VolGroup00/LogVol00' [4.34 GB] inherit

  ACTIVE            '/dev/VolGroup00/LogVol01' [512.00 MB] inherit

I’ve used SnapDrive for HPUX before with no problems using LVM.  I’m aware that CentOS isn’t officially supported, but I was hoping it would work since RHEL is supported (and it’s only a test environment anyway). 

Is there something I’m missing here?

Thanks very much

Chris