US Robotics 7931 Betriebsanweisung PDF herunterladen (Seite 167)

Chapter 5 Staging 143

Together, the four water mark settings create a dynamic priority factor that includes

a percentage value indicating how full the file system is and the levels at which the

HWM and LWM are set. The value assigned to a preview request is determined by

whether a factor is global, specific to a file system, or not set.

When a file system crosses from one condition to another, the priority of each VSN

associated with that file system is recalculated based on the appropriate water mark

priority setting, with or without the chmed(1M) command’s p option.

The water mark priorities are used only to calculate media requests for archiving.

They are not used to calculate media requests for staging.

CODE EXAMPLE 5-3 shows the settings to use to enable the releaser to free enough

disk space so that the file system goes below the LWM.

lhwm_priority = value For value, specify the amount by which you want the water

mark priority factor to change for archiving requests when the

file system crosses from below to above the LWM but remains

below the HWM level. This generally indicates that the file

system is filling up. The default is 0.0.

hlwm_priority = value For value, specify the amount by which you want the water

mark priority factor to change for archiving requests when the

file system has crossed from above to below the HWM but

remains above the LWM level. This generally indicates that

the releaser was not able to free enough disk space to leave the

file system below the LWM. The default is 0.0.

hwm_priority = value For value, specify the amount by which you want the water

mark priority factor to change for archiving requests when the

file system is above the HWM level. The default is 0.0.

CODE EXAMPLE 5-3 Settings for Going Below the LWM

lhwm_priority = -200.0

hlwm_priority = 100.0

TABLE 5-6 Water Mark Priority Directives (Continued)

Priority Directive Argument

1 2 ... 162 163 164 165 166 167 168 169 170 171 172 ... 287 288

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US Robotics 7931 Betriebsanweisung Seite 167