When an I/O domain fails, the vxdisk scandisks or vxdctl enable command take a long time to complete (2791127)

When an I/O domain fails, the vxdisk scandisks or vxdctl enable from the Oracle VM Server for SPARC guest take a long time to complete. vdc_ioctls like DKIOCGGEOM and DKIOCINFO also take more time to return. These issues seem to be due to retry operations performed at the Solaris operating system layer.

Reducing the vdc_timeout value to lower value might help to bring down time. Dynamic multi-pathing (DMP) code is optimized to avoid making such vdc_ioctl calls in an Oracle VM Server for SPARC guest environment as much possible. This change considerably reduces delays.

A complete resolution to this issue may require changes at the Solaris operating system level.