Notes

Ep2055163a4
eight is one embodiment of a flowchart showing the process by which a consumer performs a scorching swap of an adapter on a fault tolerant laptop system, proven in FIGS. 7 is one embodiment of a flowchart showing the method by which a user performs a scorching add of an adapter on a canister on a fault tolerant pc system, proven in FIG. In one embodiment of the invention, the configuration info is calculated on an ad-hoc foundation. In another implementation of the invention, the configuration data is maintained in a template. The template relies upon the configuration info of an adapter of the identical type located on a reference system. The reference system is another fault tolerant laptop system.
Finally in state 816 the configuration supervisor modifications each adapter's state to active. The network adapter 104 usually includes a community controller 128. In certain configurations there may be multiple community controller adapter connected to the computer a hundred. Typically, the mass storage adapter 102 and the community adapter 104 are related to the computer utilizing a standards-based bus system.
At state 1030, a request is made to restart the I/O. Next, the configuration supervisor 500 generates a restart I/O packet . The configuration manager 500 sends this packet to the Filter CDM 513. The Filter CDM 513 receives this I/O packet to restart the communication between the mass storage adapter and the adapter driver . The Filter CDM 513 makes a name to NPA_Config to restart the communication between the mass storage adapter and the adapter driver.
The configuration manager 500 suspends the I/O for each adapter that is located on the canister which was selected by the user to obtain the new card. In one other embodiment, the SNMP agent 520 or the NetWare User Interface 518 requests the configuration supervisor to droop the canister. The configuration supervisor 500 then locates all units and suspends the I/O for every adapter situated on the selected canister. In different embodiments of the invention, the new plug system executes on an I/O platform. In a primary architectural embodiment of the invention, the I/O platform and its devices plug in as a single adapter card into a slot. In a second architectural embodiment of the invention, the bridge is built-in onto the motherboard, and sizzling plug adapters plug in behind the bridge.
First, a process for hot add and swap of an adapter under the NetWare Operating System shall be described based on the processes proven in FIGS. Second, a process for warm add and swap of an adapter 310 underneath the Windows NT Operating System setting might be described based on the processes proven in FIGS. thirteen is a flowchart illustrating one embodiment of a process by which a loaded adapter driver of FIG. 12 initializes itself with the configuration supervisor under the Windows NT Operating System. 6 is one embodiment of a flowchart illustrating the process by which a user performs a scorching add of an adapter in the fault tolerant computer system, shown in FIG. 5 is a block diagram illustrating sure system driver parts of the NetWare Operating System and one embodimennt of a configuration supervisor which reside on the fault tolerant computer system, proven in FIG.
The NetWare Operating Systems call to retrieve configuration table data is GetMLIDConfigurationTableEntry. Proceeding to state video cable , for a canister system, the user removes the canister containing the failed card and exchanges an old adapter with a new adapter. The user then reinserts the canister. For a non-canister system, the consumer swaps the old adapter for the brand new adapter in the slot. The major purpose of the Filter CDM 516 is to find each HAM 512, register adapter events, and course of the I/O suspend and I/O restart requests from the configuration manager 500. These commands will be mentioned in larger detail below as regards to FIG.
With demand for 24-hour access to important, server-based info resources, deliberate system downtime for system service or growth has turn out to be unacceptable. However, numerous entities have tried to implement the hot plug of those adapters to a fault tolerant pc system. One vital problem in designing a hot plug system is defending the circuitry contained on the adapter from being short-circuited when an adapter is added to a powered system. Typically, an adapter contains edge connectors which are positioned on one aspect of the printed circuit board. These edge connectors enable power to transfer from the system bus to the adapter, in addition to supplying data paths between the bus and the adapter. These edge connectors match right into a slot on the bus on the pc system.
In one embodiment of the invention the configuration manager 1100 is registered to load first at state 1200. Installation software has modified the list of adapter drivers to load the configuration supervisor 1100 first, so that the opposite adapter drivers can register with the configuration manager 1100 during their initialization. Moving to state 1202, WinNT proceeds to load the mass storage driver. Traditionally, the adapter driver for one or more the mass storage adapters is the primary adapter driver loaded by WinNT, in order that different drivers have entry to a mass storage medium. WinNT then hundreds the remainder of the drivers . If the BAR has a value equal to IOPortO or IOPort1, the current configuration table describes the requested adapter and the method proceeds to state 922.
In one other embodiment, the configuration manager 500 de-asserts the bus reset. The configuration manager 500 re-initializes the configuration area of each adapter that was beforehand within the system . Since an adapter has misplaced power throughout a scorching add, the adapter is in an unknown state after reapplying energy. Moving to state 714, the configuration manager 500 applications the configuration area of the new adapter. Finally, the configuration supervisor 500 resumes operations to all the adapters situated on the canister .
The HSM 508 receives this name and resets the adapter 310. For each suspend and restart, the driver then proceeds to state 930 which returns a success message to the SNMP agent or NetWare user interface. Adapter Hot Plug with NetWare Operating System FIG. 5 is a block diagram illustrating the system parts of the NetWare Operating System and an embodiment of the software program components of the invention. A configuration manager 500 is liable for managing all or some of the adapters on the PC buses 234 and 236 (FIG. 2), or 250, 252, 254 and 256 (FIG. 3). The configuration manager 500 retains monitor of the configuration data for each managed adapter positioned on the fault tolerant laptop system 100.
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