ngdr(7d) (man pages section 7: Device and Network Interfaces)

man pages section 7: Device and Network Interfaces

ngdr(7d)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO

NAME

dr, drmach, ngdr, ngdrmach- Sun Enterprise 10000 and Sun Fire 15K dynamic reconfiguration driver

SYNOPSIS

dr

drmach

ngdr

ngdrmach

DESCRIPTION

The dynamic reconfiguration (DR) driver consists of a platform-independent driver and a platform-specific module. The DR driver uses standard features of the Solaris operating environment whenever possible to control DR operations and calls the platform specific module as needed. The DR driver creates minor nodes in the file system that serve as attachment points for DR operations.

The DR driver provides a pseudo-driver interface to sequence attach and detach operations on system boards using file system entry points or "attachment points." The form of the attachment point depends on the DR model running on the domain.

DR 2.0

The DR 2.0 model uses dr_daemon(1M) to control DR operations and runs only on Sun Enterprise 10000 servers. For this server, the DR driver consists of a platform-independent driver (dr) and a platform-specific module (drmach).

The drmach(7d) module provides platform-specific DR functions and attributes on the Sun Enterprise 10000 server. The DR daemon, dr_daemon(1M), executes the DR operations by making the appropriate ioctl(2) system calls into the respective attachment point for that particular board.

For DR 2.0, an attachment point exists for each possible system board slot and takes one of the following forms:

/devices/pseudo/dr@0:slotx

/devices/pseudo/dr@0:IOx

Where x represents the physical slot number (0 to 15) for a particular system board.

DR 3.0

The DR 3.0 model uses the domain configuration server, dcs(1M), to control remote DR operations and runs on the Sun Enterprise 10000 and Sun Fire 15K servers.

Sun Enterprise 10000 Server

On the Sun Enterprise 10000 server, the DR driver consists of a platform-independent drive (ngdr) and a platform specific module (ngdrmach).

The domain configuration server (DCS) accepts DR requests from the system services processor (SSP) and uses the libcfgadm(3LIB) interface to initiate the DR operation. After the operation is performed, the results are returned to the SSP. For more information about the DCS on the Sun Enterprise 10000, refer to the dcs(1M) man page and the Sun Enterprise 10000 Dynamic Reconfiguration User Guide.

The DR driver creates a physical attachment point for system board slots that takes the following form:

/devices/pseudo/ngdr@0:SBx

Where x represents the slot number (0 to 15) for a particular board.

The cfgadm_sbd(1M) plugin creates dynamic attachment points. These attachment points refer to components on the system boards, including CPUs, memory, or I/O devices. Refer to the cfgadm_sbd(1M) man page for more details.

Sun Fire 15K Server

On the Sun Fire 15K server, the DR driver consists of a platform-independent driver (dr) and a platform-specific module (drmach).

The domain configuration server (DCS) accepts DR requests from the domain configuration agent (DCA) that runs on the Sun Fire 15K system controller. After the DCS accepts a DR request, it uses the libcfgadm(3LIB) interface to initiate the DR operation. After the operation is performed, the results are returned to the DCA. For more information about the DCS, refer to the dcs(1M) man page and the Sun Fire 15K Dynamic Reconfiguration User Guide. For more information about the DCA, refer to the dcs(1M) man page and the System Management Services (SMS) Dynamic Reconfiguration User Guide.

The DR driver creates a physical attachment point for system board slots that take the following forms.

/devices/pseudo/dr@0:SBx

/devices/pseudo/dr@0:IOx

Where x represents the expander number (0 to 17) for a particular board.