LogPolicy LogPolicy LogPolicy LogPolicy Class

Definizione

Rappresenta il criterio associato a un'istanza LogStore.Represents the policy associated with a LogStore.

public ref class LogPolicy sealed
public sealed class LogPolicy
type LogPolicy = class
Public NotInheritable Class LogPolicy
Ereditarietà
LogPolicyLogPolicyLogPolicyLogPolicy

Esempi

In questo esempio viene illustrato come utilizzare la classe LogPolicy per impostare criteri per una sequenza del record del registro.This example shows how to use the LogPolicy class to set policy for a log record sequence.

// SET LOG POLICY

LogPolicy policy = sequence.LogStore.Policy;

// Set AutoGrow policy. This enables the log to automatically grow
// when the existing extents are full. New extents are added until
// we reach the MaximumExtentCount extents.
// AutoGrow policy is supported only in Windows Vista and not available in R2.

//policy.AutoGrow = true;

// Set the Growth Rate in terms of extents. This policy specifies
// "how much" the log should grow. 
policy.GrowthRate = new PolicyUnit(2, PolicyUnitType.Extents);

// Set the AutoShrink policy. This enables the log to automatically
// shrink if the available free space exceeds the shrink percentage. 
// AutoGrow/shrink policy is supported only in Windows Vista and not available in R2.

//policy.AutoShrinkPercentage = new PolicyUnit(30, PolicyUnitType.Percentage);

// Set the PinnedTailThreshold policy.
// A tail pinned event is triggered when there is no
// log space available and log space may be freed by advancing the base.
// The user must handle the tail pinned event by advancing the base of the log. 
// If the user is not able to move the base of the log, the user should report with exception in
// the tail pinned handler.
// PinnedTailThreashold policy dictates the amount of space that the TailPinned event requests 
// for advancing the base of the log. The amount of space can be in percentage or in terms of bytes 
// which is rounded off to the nearest containers in CLFS. The default is 35 percent.


policy.PinnedTailThreshold = new PolicyUnit(10, PolicyUnitType.Percentage);

// Set the maximum extents the log can have.
policy.MaximumExtentCount = 6;

// Set the minimum extents the log can have.
policy.MinimumExtentCount = 2;

// Set the prefix for new containers that are added. 
// when AutoGrow is enabled.
//policy.NewExtentPrefix = "MyLogPrefix";

// Set the suffix number for new containers that are added.
// when AutoGrow is enabled. 
policy.NextExtentSuffix = 3;

// Commit the log policy.
policy.Commit();

// Refresh updates the IO.Log policy properties with current log policy 
// set in the log. 
policy.Refresh();

// LOG POLICY END
// 
' SET LOG POLICY

Dim policy As LogPolicy = sequence.LogStore.Policy

' Set AutoGrow policy. This enables the log to automatically grow
' when the existing extents are full. New extents are added until
' we reach the MaximumExtentCount extents.
' AutoGrow policy is supported only in Windows Vista and not available in R2.

'policy.AutoGrow = true;

' Set the Growth Rate in terms of extents. This policy specifies
' "how much" the log should grow. 
policy.GrowthRate = New PolicyUnit(2, PolicyUnitType.Extents)

' Set the AutoShrink policy. This enables the log to automatically
' shrink if the available free space exceeds the shrink percentage. 
' AutoGrow/shrink policy is supported only in Windows Vista and not available in R2.

'policy.AutoShrinkPercentage = new PolicyUnit(30, PolicyUnitType.Percentage);

' Set the PinnedTailThreshold policy.
' A tail pinned event is triggered when there is no
' log space available and log space may be freed by advancing the base.
' The user must handle the tail pinned event by advancing the base of the log. 
' If the user is not able to move the base of the log, the user should report with exception in
' the tail pinned handler.
' PinnedTailThreashold policy dictates the amount of space that the TailPinned event requests 
' for advancing the base of the log. The amount of space can be in percentage or in terms of bytes 
' which is rounded off to the nearest containers in CLFS. The default is 35 percent.


policy.PinnedTailThreshold = New PolicyUnit(10, PolicyUnitType.Percentage)

' Set the maximum extents the log can have.
policy.MaximumExtentCount = 6

' Set the minimum extents the log can have.
policy.MinimumExtentCount = 2

' Set the prefix for new containers that are added. 
' when AutoGrow is enabled.
'policy.NewExtentPrefix = "MyLogPrefix";

' Set the suffix number for new containers that are added.
' when AutoGrow is enabled. 
policy.NextExtentSuffix = 3

' Commit the log policy.
policy.Commit()

' Refresh updates the IO.Log policy properties with current log policy 
' set in the log. 
policy.Refresh()

' LOG POLICY END
' 

Commenti

Un criterio è un set di regole a cui devono attenersi un'istanza LogStore e i relativi client.A policy is a set of rules to be followed by a LogStore instance and its clients. Un'istanza LogPolicy viene utilizzata per esaminare e modificare il criterio associa a un'istanza LogStore specifica.A LogPolicy instance is used to examine and modify the policy associated with a specific LogStore. Un criterio può descrivere le dimensioni minima e massima consentite per il log o la dimensione massima consentita per l'istanza LogStore.A policy can describe the minimum and maximum allowable log sizes, or how the LogStore instance is allowed to grow. È inoltre possibile controllare se un'istanza LogStore può essere archiviata.In addition, you can also control whether a LogStore instance can be archived.

Dopo avere modificato una proprietà, è necessario utilizzare il metodo Commit per garantire che le modifiche vengano applicate all'istanza LogStore.After changing any of the properties, you should use the Commit method to ensure that the changes are applied to the LogStore. È possibile chiamare il metodo Refresh per annullare le modifiche o per ottenere il criterio più recente.You can call the Refresh method to discard changes or to get the most current policy.

Proprietà

AutoGrow AutoGrow AutoGrow AutoGrow

Ottiene o imposta un valore che indica se l'istanza LogStore può crescere automaticamente.Gets or sets a value indicating whether the LogStore can grow automatically.

AutoShrinkPercentage AutoShrinkPercentage AutoShrinkPercentage AutoShrinkPercentage

Ottiene o imposta la percentuale di spazio libero che può essere compattato dall'istanza LogStore.Gets or sets the percentage of free space the LogStore can shrink.

GrowthRate GrowthRate GrowthRate GrowthRate

Ottiene o imposta la velocità di espansione automatica di LogStore.Gets or sets the rate of automatic growth of the LogStore.

MaximumExtentCount MaximumExtentCount MaximumExtentCount MaximumExtentCount

Ottiene o imposta il numero massimo di istanze LogExtent che può contenere LogStore.Gets or sets the maximum number of LogExtent instances the LogStore can contain.

MinimumExtentCount MinimumExtentCount MinimumExtentCount MinimumExtentCount

Ottiene o imposta il numero minimo di istanze LogExtent che può contenere LogStore.Gets or sets the minimum number of LogExtent instances the LogStore can contain.

NewExtentPrefix NewExtentPrefix NewExtentPrefix NewExtentPrefix

Ottiene o imposta la stringa del prefisso per gli extent creati automaticamente.Gets or sets the prefix string for automatically created extents.

NextExtentSuffix NextExtentSuffix NextExtentSuffix NextExtentSuffix

Ottiene o imposta il numero del suffisso per i nuovi extent.Gets or sets the suffix number for new extents.

PinnedTailThreshold PinnedTailThreshold PinnedTailThreshold PinnedTailThreshold

Ottiene o imposta il quantità di spazio che richiede l'evento TailPinned per anticipare la base del log.Gets or sets the amount of space that the TailPinned event requires for advancing the base of the log.

Metodi

Commit() Commit() Commit() Commit()

Imposta questo criterio come il criterio corrente per l'istanza LogStore.Sets this policy as the current policy for the LogStore.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determina se l'oggetto specificato è uguale all'oggetto corrente.Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Funge da funzione hash predefinita.Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Ottiene l'oggetto Type dell'istanza corrente.Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficiale dell'oggetto Object corrente.Creates a shallow copy of the current Object.

(Inherited from Object)
Refresh() Refresh() Refresh() Refresh()

Legge il criterio corrente per l'istanza LogStore, annullando qualsiasi modifica eventualmente apportata.Reads the current policy for the LogStore, discarding any changes that may have been made.

ToString() ToString() ToString() ToString()

Restituisce una stringa che rappresenta l'oggetto corrente.Returns a string that represents the current object.

(Inherited from Object)

Si applica a