cfgadm_fp

- driver specific commands for cfgadm

Synopsis

/usr/sbin/cfgadm [-f] [-n | -y] [-v] [-o hardware_options]
     -c function ap_id [ap_id]

/usr/sbin/cfgadm [-v] [-a] [-s listing_options] 
     [-o hardware_options] [-l [ap_id]]

/usr/sbin/cfgadm [-v] [-o hardware_options] -h [ap_id]

Description

The fp port driver plug-in /usr/lib/cfgadm/fp.so.1 provides the functionality for Fibre Channel Fabric device node management through cfgadm(1M). cfgadm operates on attachment points. Attachment points are locations in the system where hardware resources can be dynamically reconfigured. Refer to cfgadm(1M) for additional details on attachment points.

For Fibre Channel Fabric device node management, each fp port node is represented by an attachment point in the device tree. In addition, each Fibre Channel device is represented by a dynamic attachment point. Attachment points are named through ap_ids. Two types of ap_ids are defined: logical and physical. The physical ap_id is based on the physical pathname. The logical ap_id is a shorter, more user-friendly name. For fp port nodes, the logical ap_id is the corresponding disk controller number. For example, c0 is a typical logical ap_id.

Fibre Channel devices are named with a port World Wide Name (WWN). If a disk device is connected to controller c0, its ap_id can be:

c0::50020f2300006077

where 50020f2300006077 identifies the port WWN of a specific Fibre Channel device.

Each device on the Fibre Channel private loop port, Fabric port or public loop port is probed and made available to Solaris by default. Devices connected to the Fibre Channel Fabric port or public loop port can be made unavailable to Solaris by initiating an application or an end user operation. The operation is similar to the hot unplugging of devices by way of management user interfaces. Applications or users can use the /usr/lib/cfgadm/fp.so.1 library to enable libcfgadm to provide interfaces to accomplish this task.

The list of currently connected Fabric devices is generated in the form of the attachment point.

A simple listing of attachment points in the system includes attachment points at fp port nodes but not Fibre Channel devices. The following example uses the -a flag to the list option (-l) to list Fibre Channel devices:

# cfgadm -l
     Ap_Id                Type         Receptacle   Occupant     Condition
     c0                   fc-fabric    connected    configured   unknown
     c1                   fc-private   connected    configured   unknown
     c2                   fc-pt_to_pt  connected    configured   unknown
     c3                   fc           connected    unconfigured unknown
     sysctrl0:slot0       cpu/mem      connected    configured   ok
     sysctrl0:slot1       sbus-upa     connected    configured   ok

The following example lists Fibre Channel devices connected to fp ports.

# cfgadm -al
     Ap_Id                Type         Receptacle   Occupant     Condition
     c0                   fc-fabric    connected    configured   unknown
     c0::50020f2300006077 disk         connected    configured   unknown
     c0::50020f23000063a9 disk         connected    configured   unknown
     c0::50020f2300005f24 disk         connected    configured   unknown
     c0::50020f2300006107 disk         connected    configured   unknown
     c1                   fc-private   connected    configured   unknown
     c1::220000203708b69c disk         connected    configured   unknown
     c1::220000203708ba7d disk         connected    configured   unknown
     c1::220000203708b8d4 disk         connected    configured   unknown
     c1::220000203708b9b2 disk         connected    configured   unknown
     c2                   fc-pt_to_pt  connected    configured   unknown
     c2::500104f000937528 tape         connected    configured   unknown
     c3                   fc           connected    unconfigured unknown
     sysctrl0:slot0       cpu/mem      connected    configured   ok
     sysctrl0:slot1       sbus-upa     connected    configured   ok

In this example, the fc-fabric type of ap_id c0 indicates that the fp port is connected to Fabric. For an fp port with a Fabric-related type such as fc-fabric and fc-public, device node creation happens by default at the boot time and can be managed by the cfgadm configure and unconfigure operations. The fc-private type of ap_id c1 indicates that fp port is connected to private-loop and device node creation happens by default as well. The fc-pt_to_pt type of ap_id c2 indicates that the fp port is directly connected to another N_port and device node creation also happens by default. The fc type of ap_id c3 indicates that nothing is attached to fp port c2. The Type field of a Fibre Channel device ap_id shows the SCSI device type of LUN 0 in the device.

A Fibre Channel device with multiple FCP SCSI LUNs is configured into Solaris and each FCP SCSI LUN is available as a Solaris device. Suppose that ap_ids c0::50020f2300006077 and c0::50020f23000063a9 represent Fibre Channel devices with multiple FCP SCSI LUNs.

The following example shows how to list ap_ids with FCP SCSI LUN information:

# cfgadm -al -o show_SCSI_LUN
     Ap_Id                  Type         Receptacle   Occupant     Condition
     c0                     fc-fabric    connected    configured   unknown
     c0::50020f2300006077,0 disk         connected    configured   unknown
     c0::50020f2300006077,1 disk         connected    configured   unknown
     c0::50020f2300006077,2 disk         connected    configured   unknown
     c0::50020f2300006077,3 disk         connected    configured   unknown
     c0::50020f23000063a9,0 disk         connected    configured   unknown
     c0::50020f23000063a9,1 disk         connected    configured   unknown
     c0::50020f23000063a9,2 disk         connected    configured   unknown
     c0::50020f23000063a9,3 disk         connected    configured   unknown
     c0::50020f2300005f24,0 disk         connected    unconfigured unknown
     c0::50020f2300005f24,1 disk         connected    unconfigured unknown
     c0::50020f2300006107,0 disk         connected    unconfigured unknown
     c0::50020f2300006107,1 disk         connected    unconfigured unknown
     c1                     fc-private   connected    configured   unknown
     c1::220000203708b69c,0 disk         connected    configured   unknown
     c1::220000203708ba7d,0 disk         connected    configured   unknown
     c1::220000203708b8d4,0 disk         connected    configured   unknown
     c1::220000203708b9b2,0 disk         connected    configured   unknown
     c2                     fc-pt_to_pt  connected    configured   unknown
     c2::500104f000937528,0 tape         connected    configured   unknown
     c3                     fc           connected    unconfigured unknown

In this example, the ap_id c0::50020f2300006077,0 identifies the FCP SCSI LUN 0 of the Fibre Channel device which is represented by port WWN 50020f2300006077. The Fibre Channel device is reported to have 4 FCP SCSI LUNs and they are all configured. 4 FCP SCSI LUN level ap_ids associated with port WWN 50020f2300006077 are listed. The listing also displays FCP SCSI LUNs for unconfigured Fibre Channel devices. The Fibre Channel device represented by c0::50020f2300005f24 is reported to have two FCP SCSI LUNs. The configure operation on c0::50020f2300005f24 creates two Solaris devices. The Type field of FCP SCSI LUN level ap_ids show the SCSI device type of each LUN. When a Fibre Channel device has different device type LUNs, the Type field reflects that.

The receptacle and occupant state for attachment points at the fp port have the following meanings:

configured

One or more devices configured on the fp port

connected

fp port active

disconnected

fp port quiesced (IO activity is suspended)

empty

Not applicable

unconfigured

No devices configured on the fp port

The state for individual Fibre Channel devices on an fp port:

configured

Device is configured into Solaris and is available for use

connected

fp port to which the device is connected to is active

disconnected

fp port to which the device is attached is quiesced

unconfigured

Device is available to be configured

The condition field for attachment points at the fp port has the following meanings:

failed

An error condition has prevented the fp port from being able to detect the presence or type of a Fibre Channel connection.

The condition field for individual Fibre Channel devices on an fp port has the following meanings:

failed

An error is encountered while probing a device on Fabric.

failing

A device was configured on a host and its state as seen by Solaris appears to be normal (i.e., online) but it is either not currently present or visible in the fabric or its presence could not be verified due to an error condition on the local port through which the device was configured.

unusable

A device has been configured on the host, but is currently offline or failed.

The unknown condition indicates that probing a device on Fabric completed without an error and the device state within Solaris host is normal if the device was configured previously. The internal condition of the device cannot be guaranteed.

Options

cfgadm defines several types of operations in addition to listing (-l). These operations include invoking configuration state changes and obtaining configuration administration help messages (-h).

The following options are supported:

-c function

The following generic commands are defined for the fp-transport-specific library:

For Fibre Channel device attachment points on the fc-fabric type fp port attachment point, the following configuration state change operations are supported:

configure

Configure a connected Fibre Channel Fabric device to a host. When a Fibre Channel device is listed as an unknown type in the output of the list operation the device might not be configurable. No attempt is made to configure devices with unknown types. The force option (-f) can be used to force the fp port driver plug-in to make an attempt to configure any devices. Any errors in the process are reported. By default, each FCP SCSI LUN that is discovered on a Fibre channel Fabric device is configured. However, FCP SCSI LUNs that are specified in the “pwwn-lun-blacklist” property in the fp.conf file will remain unconfigured. The FCP SCSI LUN level listing reflects the state of such FCP SCSI LUNs. They stay in the “unconfigured” state after reboot or Solaris Dynamic Reconfiguration on the controller that they are connected through. Refer to fp(7d) for additional details on the “pwwn-lun-blacklist” property.

unconfigure

Unconfigure a Fibre Channel Fabric device from a host. This device stays unconfigured until the next reboot or Solaris Dynamic Reconfiguration on the controller that the device is connected, at which time all fabric devices are automatically enumerated. The default behavior may be changed through the use of the “manual_configuration_only” property in the fp.conf file. If the property is set, the device remains unconfigured after reboot. Refer to fp(7d) for additional details on the “manual_configuration_only” property.

For Fibre Channel private loop devices and N_Port point-to-point devices, the configure command returns success without doing any operation. The unconfigure command is not supported on the private loop devices and N_Port point-to-point devices. The private loop devices and N_Port point-to-point devices are configured by Solaris Fibre Channel drivers by default and are not managed through end user- or application-initiated operations. The pwwn-lun-blacklist property in the fp.conf file is applied to the private loop device and N_Port point-to-point device in the same way it is applied to a Fabric device.

-f

Force the configure change state operation to occur irrespective of the condition or type. Refer to the above description of the configure change state operation.

-h ap_id

Obtain fp—transport-specific help. Specify any fp attachment point.

-o hardware_options

The following hardware options are supported.

show_SCSI_LUN

Lists ap_ids associated with each FCP SCSI LUN for discovered Fibre Channel devices when specified with the list option -al. Refer to the previously mentioned description and example of FCP SCSI LUN level listing. Device node creation is not supported on the FCP SCSI LUN level. See NOTES.

All Fibre Channel devices are available to Solaris by default. Enabling only a subset of Fabric devices available to Solaris by default can be accomplished by setting the property “manual_configuration_only” in /kernel/drv/fp.conf file. When “manual_configuration_only” in fp.conf is set, all Fabric devices are not available to Solaris unless an application or an end user had previously requested the device be configured into Solaris. The configure state-change command makes the device available to Solaris. After a successful configure operation on a Fabric device, the associated links are added to the /dev namespace. The unconfigure state-change command makes a device unavailable to Solaris.

When a Fibre Channel Fabric device is configured successfully to a host using the -c configure operation, its physical ap_id is stored in a repository. When a Fibre Channel Fabric device is unconfigured using the -c unconfigure operation, its physical ap_id is deleted from the same repository. All fabric devices are automatically enumerated by default and the repository is used only if the fp.conf “manual_configuration_only” property is set. Refer to fp(7d) for additional details on the “manual_configuration_only” property.

You can specify the following commands with the -c option to control the update behavior of the repository:

force_update

For configure, the attachment point is unconditionally added to the repository; for unconfigure, the attachment point is unconditionally deleted.

no_update

No update is made to the repository regardless of the operation.

These options should not be used for normal configure and unconfigure operations. See WARNINGS.

When a Fibre Channel device has multiple FCP SCSI LUNs configured and any Solaris device associated with its FCP SCSI LUN is in the unusable condition, the whole Fibre Channel device is reported as unusable. The following option with the -c unconfigure command removes only Solaris devices with the unusable condition for a Fibre Channel device.

unusable_SCSI_LUN

For unconfigure operation, any offlined device nodes for a target device is removed.

-s listing_options

Refer to cfgadm(1M) for usage information.

-t ap_id

No test commands are available at present.

-x hardware_function

No hardware specific functions are available at present.

All other options have the same meaning as defined in the cfgadm(1M) man page.

Examples

Example 1 Unconfiguring a Disk

The following command unconfigures a disk:

# cfgadm -c unconfigure c0::210000203708b606

Example 2 Unconfigure all the Configured Disks under Single Attachment Point

The following command unconfigures all configured disks under the attachment point c0.

# cfgadm -c unconfigure c0

Example 3 Configuring a Disk

The following command configures a disk:

# cfgadm -c configure c0::210000203708b606

Example 4 Configure all the Unconfigured Disks under Single Attachment Point

The following command configures all unconfigured disks under the attachment point c0.

# cfgadm -c configure c0

Example 5 Removing the Fibre Channel Fabric Device Attachment Point from Repository

The following command unconditionally removes the fibre channel fabric device attachment point from the Fabric device repository.

# cfgadm -c unconfigure -o force_update c0::210000203708b606

Example 6 Removing Offlined Solaris Device Nodes for a Target Device

The following command removes offlined Solaris device nodes for a target device:

# cfgadm -c unconfigure -o unusable_SCSI_LUN c0::210000203708b606

Files

/usr/lib/cfgadm/fp.so.1

Hardware-specific library for Fibre Channel Fabric device node management.

/etc/cfg/fp/fabric_WWN_map

Repository of physical ap_ids of Fabric devices currently configured. It is used only to reconfigure those Fabric devices at boot time. This repository is only used when the “manual_configuration_only” /kernel/drv/fp.conf file is set.

/etc/rcS.d/fdevattach

Reconfigures Fabric device(s) of which physical ap_id is listed in /etc/cfg/fp/fabric_WWN_map on boot time.

Attributes

See attributes(5) for descriptions of the following attributes:

See Also

svcs(1), cfgadm(1M), svcadm(1M), config_admin(3CFGADM), libcfgadm(3LIB), attributes(5), smf(5), fp(7d)

Warnings

Do not use hardware-specific options for the repository update under normal configure/unconfigure operations. The hardware-specific options are expected to be used when the node creation of a Fabric device fails at boot time and the error condition is considered to be permanent. The unconfigure command with force_update hardware-specific option unconditionally removes the attachment point of a failing Fabric device from the repository.

Notes

For devices with unknown or no SCSI device type (for example, a Fibre Channel Host Bus Adapter), the configure operation might not be applicable.

The configure and unconfigure commands operate on the Fibre Channel device level which is represented by port WWN ap_id. If a Fibre Channel device has multiple FCP SCSI LUNs configured, the configure command on the associated port WWN ap_id results in creating a Solaris device for each FCP SCSI LUN unless it is specified in the “pwwn-lun-blacklist” property in the fp.conf file. The unconfigure command removes all Solaris devices associated with the port WWN ap_id. The FCP SCSI LUN level ap_id is not valid for the configure and unconfigure commands.

The deprecated show_FCP_dev option has been replaced by the new show_SCSI_LUN option, and the deprecated unusable_FCP_dev option has been replaced by the new unusable_SCSI_LUN option.

The cfgadm_fp service is managed by the service management facility, smf(5), under the service identifier:

svc:/system/device/fc-fabric:default

Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The service's status can be queried using the svcs(1) command.

No administrative actions on this service are required for Fabric device configuration once this service is started on boot time.