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sys_attrs_cm(5) [osf1 man page]

sys_attrs_cm(5) 						File Formats Manual						   sys_attrs_cm(5)

NAME
sys_attrs_cm - system attributes for the cm kernel subsystem DESCRIPTION
This reference page describes attributes for the Configuration Manager (cm) kernel subsystem. See sys_attrs(5) for an introduction to the topic of system attributes. Maximum number of subsystems that can set a dependency on a given subsystem. Default value: 20 (subsystems) Minimum value: 8 Maximum value: 1024 Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit instructions. Maximum number of subsystems that can have dependents registered. Default value: 20 (subsystems) Minimum value: 8 Maximum value: 1024 Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit instructions. The maximum number of registered callbacks that are allowed by the kernel at any point in time. If exceeded, register_callback() (a function used only by kernel components, such as device drivers) receives an error message. Default value: 341 (callbacks) Minimum value: 341 Maximum value: 21824 Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit instructions. SEE ALSO
sys_attrs(5) sys_attrs_cm(5)

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sys_attrs_cam(5)						File Formats Manual						  sys_attrs_cam(5)

NAME
sys_attrs_cam, sys_attrs_cam_disk, sys_attrs_cam_tape - SCSI CAM I/O subsystem attributes DESCRIPTION
This reference page lists and describes attributes for the following kernel subsystems associated with the SCSI CAM I/O system: cam cam_adapter-id cam_disk cam_tape An asterisk (*) precedes the name of an attribute that is modifiable at run time. However, the ability to modify the value at run-time may be a software requirement. Read the attribute description carefully to determine whether run-time configuration should ever be done manu- ally. Refer to the sys_attrs(5) reference page for an introduction to the topic of kernel subsystem attributes. cam and Adapter-Specific Cam Subsystem Attributes Values of attributes for the CAM (cam) subsystem and adapter-specific (cam_adapter-id) CAM subsystems should never be modified. cam_disk Subsystem Attributes Attributes for the cam_disk subsystem should be changed internally or under the direction of support personnel. Most of these attributes have a global effect across all disk devices. If the affected devices are of the same type, a global change may be appropriate. However, global changes applied to devices with different requirements is likely to adversely affect some of the devices. The Hardware Manager application allows you to apply device-specific adjustments and it is recommended that you use this interface. Number of seconds that the subsystem waits in the presence of repeated device busy signals before performing a bus device reset operation on the device. Do not modify the setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. This attribute has effect only in a TruCluster environment. Do not modify the setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. This attribute has effect only in a TruCluster environment. Do not modify the setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. This attribute has effect only in a TruCluster environment. Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. A value that indicates how long to wait after the start of constant "no connection" errors for the disk device before starting recovery procedure. The default value indicates that all bits are set to 1. This specifies that disk driver defaults for this wait interval are applied. Do not modify the setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. A set- ting change is global; that is, it overrides the default wait interval for all disk drivers and is likely to cause unpredictable behavior in some devices. Do not modify the setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. Disk drive initialization state, which is set by the subsystem. This attribute is query only. A query-only identifier that is set by the subsystem. A query-only identifier that is set by the subsystem. Do not modify the setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. Default value: 2 (spinups) Number of seconds that device polling reveals a drive is inactive before spinning down the disk. Default value: 30 (seconds) Minimum value: 5 Maximum value: 65,535 cam_tape Subsystem Attributes Do not modify the default setting for this attribute unless instructed to do so by support personnel or by patch kit documentation. Default value: 0 A value queried by the tape device driver to determine its initialization state. You cannot modify this variable. The driver changes the value from 0 (when the system starts to boot) to 1 (during the boot operation). A value that specifies the system behavior when a write-locked tape is opened with the O_RDWR or O_WRONLY flag. The default and rec- ommended behavior (1) is to return failure on the open operation. The alternate behavior (0) is to allow the open operation but return failure on an attempt to write to the tape. Default value: 1 It is recommended that you do not change the default. The 0 value is intended only for customers whose applications ran on DIGITAL UNIX versions earlier than Version 4.0B and depend on the open behavior in effect for those earlier versions. SEE ALSO
sys_attrs(5) sys_attrs_cam(5)
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