Using Virtual Disks When VxVM Is Installed

When the Veritas Volume Manager (VxVM) is installed on your system, and if Veritas Dynamic Multipathing (DMP) is enabled on a physical disk or partition you want to export as virtual disk, then you have to export that disk or partition without setting the (non-default) excl option. Otherwise, you receive an error in /var/adm/messages while binding a domain that uses such a disk.

vd_setup_vd():  ldi_open_by_name(/dev/dsk/c4t12d0s2) = errno 16
vds_add_vd():  Failed to add vdisk ID 0

You can check if Veritas DMP is enabled by checking multipathing information in the output of the command vxdisk list; for example:

# vxdisk list Disk_3
Device:    Disk_3
devicetag: Disk_3
type:      auto
info:      format=none
flags:     online ready private autoconfig invalid
pubpaths:  block=/dev/vx/dmp/Disk_3s2 char=/dev/vx/rdmp/Disk_3s2
guid:      -
udid:      SEAGATE%5FST336753LSUN36G%5FDISKS%5F3032333948303144304E0000
site:      -
Multipathing information:
numpaths:  1
c4t12d0s2  state=enabled

Alternatively, if Veritas DMP is enabled on a disk or a slice that you want to export as a virtual disk with the excl option set, then you can disable DMP using the vxdmpadm command. For example:

# vxdmpadm -f disable path=/dev/dsk/c4t12d0s2