External SCSI Raid can't be seen via LVM, but Storage Manger

[leon_34]

On the 11i,
I managed to create a volume group and assign the 300GB of disk space to it using the (VEA) Veritas Enterprise Admin interface. I could not do this via HP's SAM or the command line as when I tried to create a volume group and assign the raid set to it, the system would come back with no disks to add.

An ioscan for disks lists the disk as claimed at c7t0d0. The disk's file system usage however is reported as VxVM.

Does the raidset need to be managed as a VxVM file system instead of LVM ? I've heard that this is the case with some attached storage devices.


If this is not the case perhaps this is a remnant from a previous attempt to mount the filesystem using VEA. In my initial attempt to mount the raidset I had problems mounting the disk using SAM (I don't specifically recall the issue) and then attempted to use VEA but canceled the creation of the volume group. Perhaps this defined the disk use as VxVM.
Anybody has any ideas? Thanks

[Mel Burslan]

I have not used any VxVM managed disks yet but I think you need to specify which volume manager is going to manage your physical volumes and they put their specific LIF information on the physical drives and if one sees the other's header sections, it marks it as off limits to itself to prevent a corruption. So if at one time you touched this raid set with VxVM, it may have claimed ownership of these disks and LVM may be seeing this old headers.

Just something to check.