Veritas InfoScale™ 7.3.1 Virtualization Guide - Solaris

To change the VDC driver timeout globally

1. On each guest domain, edit the /etc/system file and add the following line to set the VDC driver timeout to 30 seconds:

   set vdc:vdc_timeout=30

2. Reboot the guest domains.

To change the VDC driver timeout for each LUN

1. Create the primary domain using four internal disks and get all required SAN LUNs for the guest domains allocated to the primary domain.
2. Remove half of the system's I/O from the primary domain:

   # ldm remove-io pci_X primary_domain_name

   where pci_x is the name of the PCI bus for your system.

   where prinary_domain_name is the name of the primary domain.

   For example:

   # ldm remove-io pci_@400 primary

3. Create the alternate I/O domain on the other four internal disks and add the I/O that was removed from the primary domain:

   # ldm add-io pci_X primary_domain_name

   where pci_x is the name of the PCI bus for your system.

   where primary_domain_name is the name of the primary domain.

   For example:

   # ldm add-io pci_@400 primary

4. On the primary domain, create the guest domains. In the sample the enclosure-based name of one of the LUNs is xyz and the guest domain is hsxd0015:

   # ldm add-vdsdev /dev/vx/dmp/xyz vol0015-001-p1@primary-vds0
   # ldm add-vdsdev /dev/vx/dmp/xyz vol0015-001-p2@alternate-vds0
   # ldm add-vdisk timeout=30 vdsk0015-001-p1 \
   vol0015-001-p1@primary-vds0 hsxd0015
   # ldm add-vdisk timeout=30 vdsk0015-001-p2 \
   vol0015-001-p2@alternate-vds0 hsxd0015

   The same set of four commands for each SAN LUN that gets placed in a guest domain. Use three SAN LUNs for SAN boot in the guest domain and the rest for application data. Each LUN in the guest domain has one path backup through the primary domain and one backup through the alternate domain. That means each LUN only uses one LDC in each domain. Also, since you are using DMP you still only use 1 LDC in each domain, even if the LUN has more than two paths from the array.