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man pages section 1M: System Administration Commands     Oracle Solaris 10 1/13 Information Library
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Preface

Introduction

System Administration Commands - Part 1

6to4relay(1M)

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acctadm(1M)

acctcms(1M)

acctcon1(1M)

acctcon(1M)

acctcon2(1M)

acctdisk(1M)

acctdusg(1M)

acctmerg(1M)

accton(1M)

acctprc1(1M)

acctprc(1M)

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adbgen(1M)

add_allocatable(1M)

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add_drv(1M)

add_install_client(1M)

add_to_install_server(1M)

afbconfig(1M)

aliasadm(1M)

apache(1M)

arp(1M)

aset(1M)

aset.restore(1M)

atohexlabel(1M)

audit(1M)

auditconfig(1M)

auditd(1M)

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audit_startup(1M)

auditstat(1M)

audit_warn(1M)

automount(1M)

automountd(1M)

autopush(1M)

bart(1M)

bdconfig(1M)

boot(1M)

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bootconfchk(1M)

bootparamd(1M)

bsmconv(1M)

bsmrecord(1M)

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busstat(1M)

cachefsd(1M)

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cachefsstat(1M)

cachefswssize(1M)

captoinfo(1M)

catman(1M)

cfgadm(1M)

cfgadm_ac(1M)

cfgadm_cardbus(1M)

cfgadm_fp(1M)

cfgadm_ib(1M)

cfgadm_pci(1M)

cfgadm_sata(1M)

cfgadm_sbd(1M)

cfgadm_scsi(1M)

cfgadm_shp(1M)

cfgadm_sysctrl(1M)

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cfsadmin(1M)

chargefee(1M)

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idsconfig(1M)

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if_mpadm(1M)

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ikecert(1M)

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imqcmd(1M)

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imqkeytool(1M)

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in.chargend(1M)

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in.echod(1M)

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ipfs(1M)

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itu(1M)

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kernel(1M)

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killall(1M)

kmscfg(1M)

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krb5kdc(1M)

ksslcfg(1M)

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ktkt_warnd(1M)

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listen(1M)

llc2_loop(1M)

localeadm(1M)

localectr(1M)

locator(1M)

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lupc(1M)

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lustatus(1M)

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luupgrade(1M)

luxadm(1M)

m64config(1M)

mail.local(1M)

makedbm(1M)

makemap(1M)

makeuuid(1M)

masfcnv(1M)

mdlogd(1M)

mdmonitord(1M)

medstat(1M)

metaclear(1M)

metadb(1M)

metadetach(1M)

metadevadm(1M)

System Administration Commands - Part 2

System Administration Commands - Part 3

cfgadm_scsi

- SCSI hardware specific commands for cfgadm

Synopsis

/usr/sbin/cfgadm [-f] [-y | -n] [-v] [-o hardware_option]
     -c function ap_id...
/usr/sbin/cfgadm [-f] [-y | -n] [-v] [-o hardware_option]
     -x hardware_function ap_id...
/usr/sbin/cfgadm [-v] [-a] [-s listing_option] [-o hardware_option]
     [-l [ap_id | ap_type ... ]]
/usr/sbin/cfgadm [-v] [-o hardware_option] -t ap_id...
/usr/sbin/cfgadm [-v] [-o hardware_option] -h [ap_id]...

Description

The SCSI hardware specific library /usr/lib/cfgadm/scsi.so.1 provides the functionality for SCSI hot-plugging through the cfgadm(1M) command. cfgadm operates on attachment points, which are locations in the system where hardware resources can be dynamically reconfigured. Refer to cfgadm(1M) for information regarding attachment points.

For SCSI hot-plugging, each SCSI controller is represented by an attachment point in the device tree. In addition, each SCSI 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, whereas the logical ap_id is a shorter more user-friendly name. For SCSI controllers, the logical ap_id is usually the corresponding disk controller number. For example, a typical logical ap_id would be c0.

SCSI devices are named relative to the controller ap_id. Thus if a disk device is attached to controller c0, its ap_id can be:

c0::dsk/c0t0d0

where dsk/c0t0d0 identifies the specific device. In general, the device identifier is derived from the corresponding logical link for the device in /dev. For example, a SCSI tape drive logical ap_id could be c0::rmt/0. Here c0 is the logical ap_id for the SCSI controller and rmt/0 is derived from the logical link for the tape drive in /dev/rmt. If an identifier can not be derived from the link in /dev, a unique identifier will be assigned to it. For example, if the tape device has no link in /dev, it can be assigned an ap_id of the form c0::st3 where st3 is a unique internally generated identifier.

When a controller is capable of supporting the Solaris I/O multipathing feature (formerly known as MPxIO or the Sun StorEdge Traffic Manager [STMS]) and is enabled, the controller provides a path to a scsi_vhci(7D) multipath device. If a device attached to such controller is supported by scsi_vhci(7D) its ap_id can be:

c0::0,0

...where 0,0 uniquely identifies the target and logical unit information. The Type field for a path of such ap_ids indicates if it represent a path to the scsi_vhci(7D) multipath devices, along with the type of device that is connected to through the path.

A simple listing of attachment points in the system will include attachment points at SCSI controllers but not SCSI devices. Use the -a flag to the list option (-l) to list SCSI devices as well. For example:

# cfgadm -l
  Ap_Id             Type        Receptacle     Occupant     Condition
  c0                scsi-bus    connected      configured   unknown
  sysctrl0:slot0    cpu/mem     connected      configured   ok
  sysctrl0:slot1    sbus-upa    connected      configured   ok

To list SCSI devices in addition to SCSI controllers:

# cfgadm -al

Ap_Id                Type         Receptacle   Occupant     Condition
c0                   scsi-bus     connected    configured   unknown
c0::dsk/c0t14d0      disk         connected    configured   unknown
c0::dsk/c0t11d0      disk         connected    configured   unknown
c0::dsk/c0t8d0       disk         connected    configured   unknown
c0::dsk/c0t0d0       disk         connected    configured   unknown
c0::rmt/0            tape         connected    configured   unknown
sysctrl0:slot0       cpu/mem      connected    configured   ok
sysctrl0:slot1       sbus-upa     connected    configured   ok

If the controller c0 was enabled with Solaris I/O multipathing and the connected disk and tape devices are supported by Solaris I/O multipathing the output would be:

# cfgadm -al

Ap_Id               Type         Receptacle   Occupant     Condition
c0                  scsi-bus     connected    configured   unknown
c0::11,0            disk-path    connected    configured   unknown
c0::14,0            disk-path    connected    configured   unknown
c0::8,0             disk-path    connected    configured   unknown
c0::0,0             disk-path    connected    configured   unknown
c0::a.0             tape-path    connected    configured   unknown
sysctrl0:slot0      cpu/mem      connected    configured   ok
sysctrl0:slot1      sbus-upa     connected    configured   ok

Refer to cfgadm(1M) for more information regarding listing attachment points. The receptacle and occupant state for attachment points at the SCSI controller have the following meanings:

empty

not applicable

disconnected

bus quiesced (I/O activity on bus is suspended)

connected

bus active

configured

one or more devices on the bus is configured

unconfigured

no device on the bus is configured

The corresponding states for individual SCSI devices are:

empty

not applicable

disconnected

bus to which the device is attached is quiesced

connected

bus to which device is attached is active

configured

device or path to a multipath SCSI device is configured

unconfigured

device or path to a multipath SCSI device is not configured

Options

cfgadm defines several types of operations besides listing (-l).These operations include testing, (-t), invoking configuration state changes, (-c), invoking hardware specific functions (-x), and obtaining configuration administration help messages (-h).

-c function

The following generic commands are defined for the SCSI hardware specific library:

For SCSI controller attachment points, the following configuration state change operations are supported:

connect

Unquiesce the SCSI bus.

disconnect

Quiesce the bus (suspend I/O activity on bus).

Incorrect use of this command can cause the system to hang. See NOTES.

configure

Configure new devices on SCSI bus.

unconfigure

Unconfigure all devices connected to bus.

The following generic commands are defined for SCSI devices and for paths to multipath SCSI devices:

configure

Configure a specific device or a specific path to a multipath SCSI device.

unconfigure

Unconfigure a specific device or a specific path to a multipath SCSI device.

-f

When used with the disconnect command, forces a quiesce of the SCSI bus, if supported by hardware.

Incorrect use of this command can cause the system to hang. See NOTES.

-h ap_id

SCSI specific help can be obtained by using the help option with any SCSI attachment point.

-o hardware_option

No hardware specific options are currently defined.

-s listing_option

Attachment points of class scsi can be listed by using the select sub-option. Refer to the cfgadm(1M) man page for additional information.

-t ap_id

No test commands are available at present.

-x hardware_function

Some of the following commands can only be used with SCSI controllers and some only with SCSI devices.

In the following, controller_ap_id refers to an ap_id for a SCSI controller, for example, c0. device_ap_id refers to an ap_id for a SCSI device, for example: c0::dsk/c0dt3d0.

The following hardware specific functions are defined:

insert_device controller_ap_id

Add a new device to the SCSI controller, controller_ap_id.

This command is intended for interactive use only.

remove_device device_ap_id

Remove device device_ap_id.

This command is intended for interactive use only.

replace_device device_ap_id

Remove device device_ap_id and replace it with another device of the same kind.

This command is intended for interactive use only.

reset_device device_ap_id

Reset device_ap_id.

reset_bus controller_ap_id

Reset bus controller_ap_id without resetting any devices attached to the bus.

reset_all controller_ap_id

Reset bus controller_ap_id and all devices on the bus.

locator [=on|off] device_ap_id

Sets or gets the hard disk locator LED, if it is provided by the platform. If the [on|off] suboption is not set, the state of the hard disk locator is printed.

led[=LED,mode=on|off|blink] device_ap_id

If no sub-arguments are set, this function print a list of the current LED settings. If sub-arguments are set, this function sets the mode of a specific LED for a slot.

Examples

Example 1 Configuring a Disk

The following command configures a disk attached to controller c0:

# cfgadm -c configure c0::dsk/c0t3d0

Example 2 Unconfiguring a Disk

The following command unconfigures a disk attached to controller c0:

# cfgadm -c unconfigure c0::dsk/c0t3d0

Example 3 Adding a New Device

The following command adds a new device to controller c0:

# cfgadm -x insert_device c0

The system responds with the following:

Adding device to SCSI HBA: /devices/sbus@1f,0/SUNW,fas@e,8800000
This operation will suspend activity on SCSI bus c0
Continue (yes/no)? 

Enter:

y

The system responds with the following:

SCSI bus quiesced successfully. 
It is now safe to proceed with hotplug operation.
Enter y if operation is complete or n to abort (yes/no)?

Enter:

y

Example 4 Replacing a Device

The following command replaces a device attached to controller c0:

# cfgadm -x replace_device c0::dsk/c0t3d0

The system responds with the following:

Replacing SCSI device: /devices/sbus@1f,0/SUNW,fas@e,8800000/sd@3,0
This operation will suspend activity on SCSI bus: c0
Continue (yes/no)?

Enter:

y

The system responds with the following:

SCSI bus quiesced successfully. 
It is now safe to proceed with hotplug operation.
Enter y if operation is complete or n to abort (yes/no)?

Enter:

y

Example 5 Encountering a Mounted File System While Unconfiguring a Disk

The following command illustrates encountering a mounted file system while unconfiguring a disk:

# cfgadm -c unconfigure c1::dsk/c1t0d0

The system responds with the following:

cfgadm: Component system is busy, try again: failed to offline:
/devices/pci@1f,4000/scsi@3,1/sd@1,0
     Resource              Information
------------------  --------------------------
/dev/dsk/c1t0d0s0   mounted filesystem "/mnt"

Example 6 Displaying the Value of the Locator for a Disk

The following command displays the value of the locator for a disk. This example is specific to the SPARC Enterprise Server family:

# cfgadm -x locator c0::dsk/c0t6d0

The system responds with the following:

Disk                    Led
c0t6d0                  locator=on

Example 7 Setting the Value of the Locator for a Disk

The following command sets the value of the locator for a disk. This example is specific to the SPARC Enterprise Server family:

# cfgadm -x locator=off c0::dsk/c0t6d0

The system does not print anything in response.

Example 8 Configuring a Path to a Multipath SCSI Disk

The following command configures a path connected through controller c0:

# cfgadm -c configure c0::2,0

Example 9 Unconfiguring a Path to a Multipath SCSI Disk

The following command unconfigures a path connected through controller c0:

# cfgadm -c unconfigure c0::2,0

Files

/usr/lib/cfgadm/scsi.so.1

hardware-specific library for generic SCSI hot-plugging

/usr/platform/SPARC-Enterprise/lib/cfgadm/scsi.so.1

platform-specific library for generic SCSI hot-plugging

Attributes

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

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
system/library

See Also

cfgadm(1M), luxadm(1M), config_admin(3CFGADM), libcfgadm(3LIB), attributes(5), scsi_vhci(7D)

Notes

The disconnect (quiesce) operation is not supported on controllers which control disks containing critical partitions such as root (/), /usr, swap, or /var. The disconnect operation should not be attempted on such controllers. Incorrect usage can result in a system hang and require a reboot.

When a controller is in the disconnected (quiesced) state, there is a potential for deadlocks occurring in the system. The disconnect operation should be used with caution. A controller should be kept in the disconnected state for the minimum period of time required to accomplish the DR operation. The disconnect command is provided only to allow the replacement of the SCSI cables while the system is running. It should not be used for any other purpose. The only fix for a deadlock (if it occurs) is to reboot the system.

Hotplugging operations are not supported by all SCSI controllers.

Warnings

The connectors on some SCSI devices do not conform to SCSI hotplug specifications. Performing hotplug operations on such devices can cause damage to the hardware on the SCSI bus. Refer to your hardware manual for additional information.