CLOUDSTACK-1302: Allow a cache mode per disk offering
Per disk offering the setting none, writeback or writethrough can be set
This allows for both safety and performance for writes.
diff --git a/api/src/com/cloud/agent/api/to/VolumeTO.java b/api/src/com/cloud/agent/api/to/VolumeTO.java
index fb08384..4dec4d8 100644
--- a/api/src/com/cloud/agent/api/to/VolumeTO.java
+++ b/api/src/com/cloud/agent/api/to/VolumeTO.java
@@ -41,6 +41,7 @@
private Long bytesWriteRate;
private Long iopsReadRate;
private Long iopsWriteRate;
+ private String cacheMode;
private Long chainSize;
public VolumeTO(long id, Volume.Type type, StoragePoolType poolType, String poolUuid, String name, String mountPoint, String path, long size, String chainInfo) {
@@ -176,6 +177,14 @@
return iopsWriteRate;
}
+ public void setCacheMode(String cacheMode) {
+ this.cacheMode = cacheMode;
+ }
+
+ public String getCacheMode() {
+ return cacheMode;
+ }
+
public Long getChainSize() {
return chainSize;
}
diff --git a/api/src/com/cloud/offering/DiskOffering.java b/api/src/com/cloud/offering/DiskOffering.java
index fa6d66b..31bcfb3 100644
--- a/api/src/com/cloud/offering/DiskOffering.java
+++ b/api/src/com/cloud/offering/DiskOffering.java
@@ -35,6 +35,21 @@
State getState();
+ public enum DiskCacheMode {
+ NONE("none"), WRITEBACK("writeback"), WRITETHROUGH("writethrough");
+
+ private final String _diskCacheMode;
+
+ DiskCacheMode(String cacheMode) {
+ _diskCacheMode = cacheMode;
+ }
+
+ @Override
+ public String toString() {
+ return _diskCacheMode;
+ }
+ };
+
String getUniqueName();
boolean getUseLocalStorage();
@@ -92,4 +107,8 @@
void setHypervisorSnapshotReserve(Integer hypervisorSnapshotReserve);
Integer getHypervisorSnapshotReserve();
+
+ DiskCacheMode getCacheMode();
+
+ void setCacheMode(DiskCacheMode cacheMode);
}
diff --git a/api/src/com/cloud/vm/DiskProfile.java b/api/src/com/cloud/vm/DiskProfile.java
index 3d4c9e7..4412e3f 100644
--- a/api/src/com/cloud/vm/DiskProfile.java
+++ b/api/src/com/cloud/vm/DiskProfile.java
@@ -39,6 +39,7 @@
private Long bytesWriteRate;
private Long iopsReadRate;
private Long iopsWriteRate;
+ private String cacheMode;
private HypervisorType hyperType;
@@ -190,4 +191,12 @@
public Long getIopsWriteRate() {
return iopsWriteRate;
}
+
+ public void setCacheMode(String cacheMode) {
+ this.cacheMode = cacheMode;
+ }
+
+ public String getCacheMode() {
+ return cacheMode;
+ }
}
diff --git a/api/src/org/apache/cloudstack/api/response/DiskOfferingResponse.java b/api/src/org/apache/cloudstack/api/response/DiskOfferingResponse.java
index 4291d85..8649890 100644
--- a/api/src/org/apache/cloudstack/api/response/DiskOfferingResponse.java
+++ b/api/src/org/apache/cloudstack/api/response/DiskOfferingResponse.java
@@ -79,6 +79,9 @@
@SerializedName("diskIopsWriteRate") @Param(description="io requests write rate of the disk offering")
private Long iopsWriteRate;
+ @SerializedName("cacheMode") @Param(description="the cache mode to use for this disk offering. none, writeback or writethrough")
+ private String cacheMode;
+
@SerializedName("displayoffering") @Param(description="whether to display the offering to the end user or not.")
private Boolean displayOffering;
@@ -187,6 +190,14 @@
this.maxIops = maxIops;
}
+ public String getCacheMode() {
+ return this.cacheMode;
+ }
+
+ public void setCacheMode(String cacheMode) {
+ this.cacheMode = cacheMode;
+ }
+
public String getStorageType() {
return storageType;
}
diff --git a/client/WEB-INF/classes/resources/messages.properties b/client/WEB-INF/classes/resources/messages.properties
index 5885bd0..b870e7f 100644
--- a/client/WEB-INF/classes/resources/messages.properties
+++ b/client/WEB-INF/classes/resources/messages.properties
@@ -1096,6 +1096,7 @@
label.storage.traffic=Storage Traffic
label.storage.type=Storage Type
label.qos.type=QoS Type
+label.cache.mode=Write-cache Type
label.storage=Storage
label.subdomain.access=Subdomain Access
label.submit=Submit
diff --git a/core/src/com/cloud/agent/api/AttachVolumeCommand.java b/core/src/com/cloud/agent/api/AttachVolumeCommand.java
index e927619..e879897 100644
--- a/core/src/com/cloud/agent/api/AttachVolumeCommand.java
+++ b/core/src/com/cloud/agent/api/AttachVolumeCommand.java
@@ -40,6 +40,7 @@
private Long bytesWriteRate;
private Long iopsReadRate;
private Long iopsWriteRate;
+ private String cacheMode;
protected AttachVolumeCommand() {
}
@@ -202,4 +203,12 @@
public Long getIopsWriteRate() {
return iopsWriteRate;
}
+
+ public void setCacheMode(String cacheMode) {
+ this.cacheMode = cacheMode;
+ }
+
+ public String getCacheMode() {
+ return cacheMode;
+ }
}
diff --git a/core/src/org/apache/cloudstack/storage/to/VolumeObjectTO.java b/core/src/org/apache/cloudstack/storage/to/VolumeObjectTO.java
index 46659a3..732fa7b 100644
--- a/core/src/org/apache/cloudstack/storage/to/VolumeObjectTO.java
+++ b/core/src/org/apache/cloudstack/storage/to/VolumeObjectTO.java
@@ -17,6 +17,7 @@
package org.apache.cloudstack.storage.to;
import com.cloud.hypervisor.Hypervisor;
+import com.cloud.offering.DiskOffering.DiskCacheMode;
import org.apache.cloudstack.engine.subsystem.api.storage.VolumeInfo;
import com.cloud.agent.api.to.DataObjectType;
@@ -44,6 +45,7 @@
private Long bytesWriteRate;
private Long iopsReadRate;
private Long iopsWriteRate;
+ private DiskCacheMode cacheMode;
private Hypervisor.HypervisorType hypervisorType;
public VolumeObjectTO() {
@@ -71,6 +73,7 @@
this.bytesWriteRate = volume.getBytesWriteRate();
this.iopsReadRate = volume.getIopsReadRate();
this.iopsWriteRate = volume.getIopsWriteRate();
+ this.cacheMode = volume.getCacheMode();
this.hypervisorType = volume.getHypervisorType();
setDeviceId(volume.getDeviceId());
}
@@ -231,5 +234,12 @@
this.deviceId = deviceId;
}
+ public void setCacheMode(DiskCacheMode cacheMode) {
+ this.cacheMode = cacheMode;
+ }
+
+ public DiskCacheMode getCacheMode() {
+ return cacheMode;
+ }
}
diff --git a/engine/api/src/org/apache/cloudstack/engine/subsystem/api/storage/VolumeInfo.java b/engine/api/src/org/apache/cloudstack/engine/subsystem/api/storage/VolumeInfo.java
index 3b4aba9..a7dbf79 100644
--- a/engine/api/src/org/apache/cloudstack/engine/subsystem/api/storage/VolumeInfo.java
+++ b/engine/api/src/org/apache/cloudstack/engine/subsystem/api/storage/VolumeInfo.java
@@ -20,6 +20,7 @@
import com.cloud.agent.api.Answer;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
+import com.cloud.offering.DiskOffering.DiskCacheMode;
import com.cloud.storage.Volume;
public interface VolumeInfo extends DataObject, Volume {
@@ -45,4 +46,6 @@
Long getBytesWriteRate();
Long getIopsReadRate();
Long getIopsWriteRate();
+
+ DiskCacheMode getCacheMode();
}
diff --git a/engine/schema/src/com/cloud/storage/DiskOfferingVO.java b/engine/schema/src/com/cloud/storage/DiskOfferingVO.java
index b5b3451..5960df4 100755
--- a/engine/schema/src/com/cloud/storage/DiskOfferingVO.java
+++ b/engine/schema/src/com/cloud/storage/DiskOfferingVO.java
@@ -24,8 +24,8 @@
import javax.persistence.DiscriminatorColumn;
import javax.persistence.DiscriminatorType;
import javax.persistence.Entity;
-import javax.persistence.EnumType;
import javax.persistence.Enumerated;
+import javax.persistence.EnumType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@@ -37,7 +37,9 @@
import javax.persistence.Transient;
import com.cloud.offering.DiskOffering;
+import com.cloud.offering.DiskOffering.DiskCacheMode;
import com.cloud.utils.db.GenericDao;
+import org.apache.cloudstack.api.Identity;
@Entity
@Table(name = "disk_offering")
@@ -120,6 +122,10 @@
@Column(name="iops_write_rate")
Long iopsWriteRate;
+ @Column(name="cache_mode", updatable = true, nullable=false)
+ @Enumerated(value=EnumType.STRING)
+ private DiskCacheMode cacheMode;
+
@Column(name="display_offering")
boolean displayOffering = true;
@@ -135,6 +141,24 @@
}
public DiskOfferingVO(Long domainId, String name, String displayText, long diskSize, String tags, boolean isCustomized,
+ Boolean isCustomizedIops, Long minIops, Long maxIops, DiskCacheMode cacheMode) {
+ this.domainId = domainId;
+ this.name = name;
+ this.displayText = displayText;
+ this.diskSize = diskSize;
+ this.tags = tags;
+ this.recreatable = false;
+ this.type = Type.Disk;
+ this.useLocalStorage = false;
+ this.customized = isCustomized;
+ this.uuid = UUID.randomUUID().toString();
+ this.customizedIops = isCustomizedIops;
+ this.minIops = minIops;
+ this.maxIops = maxIops;
+ this.cacheMode = cacheMode;
+ }
+
+ public DiskOfferingVO(Long domainId, String name, String displayText, long diskSize, String tags, boolean isCustomized,
Boolean isCustomizedIops, Long minIops, Long maxIops) {
this.domainId = domainId;
this.name = name;
@@ -237,6 +261,16 @@
this.maxIops = maxIops;
}
+ @Override
+ public DiskCacheMode getCacheMode() {
+ return cacheMode;
+ }
+
+ @Override
+ public void setCacheMode(DiskCacheMode cacheMode) {
+ this.cacheMode = cacheMode;
+ }
+
@Override
public String getUniqueName() {
return uniqueName;
diff --git a/engine/storage/volume/src/org/apache/cloudstack/storage/volume/VolumeObject.java b/engine/storage/volume/src/org/apache/cloudstack/storage/volume/VolumeObject.java
index f761a0c..cec76c0 100644
--- a/engine/storage/volume/src/org/apache/cloudstack/storage/volume/VolumeObject.java
+++ b/engine/storage/volume/src/org/apache/cloudstack/storage/volume/VolumeObject.java
@@ -39,6 +39,7 @@
import com.cloud.agent.api.to.DataObjectType;
import com.cloud.agent.api.to.DataTO;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
+import com.cloud.offering.DiskOffering.DiskCacheMode;
import com.cloud.storage.DataStoreRole;
import com.cloud.storage.Storage.ImageFormat;
import com.cloud.storage.Volume;
@@ -214,6 +215,15 @@
return null;
}
+ @Override
+ public DiskCacheMode getCacheMode() {
+ DiskOfferingVO diskOfferingVO = getDiskOfferingVO();
+ if (diskOfferingVO != null) {
+ return diskOfferingVO.getCacheMode();
+ }
+ return null;
+ }
+
public void update() {
volumeDao.update(volumeVO.getId(), volumeVO);
volumeVO = volumeDao.findById(volumeVO.getId());
diff --git a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
index 50561a9..0000bef 100755
--- a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
+++ b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
@@ -193,6 +193,7 @@
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DevicesDef;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef.diskProtocol;
+import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef.diskCacheMode;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.FeaturesDef;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.FilesystemDef;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.GraphicDef;
@@ -1510,6 +1511,7 @@
volume.setBytesWriteRate(dskch.getBytesWriteRate());
volume.setIopsReadRate(dskch.getIopsReadRate());
volume.setIopsWriteRate(dskch.getIopsWriteRate());
+ volume.setCacheMode(dskch.getCacheMode());
return new CreateAnswer(cmd, volume);
} catch (CloudRuntimeException e) {
s_logger.debug("Failed to create volume: " + e.toString());
@@ -2815,7 +2817,8 @@
cmd.getPoolUuid());
KVMPhysicalDisk disk = primary.getPhysicalDisk(cmd.getVolumePath());
attachOrDetachDisk(conn, cmd.getAttach(), cmd.getVmName(), disk,
- cmd.getDeviceId().intValue(), cmd.getBytesReadRate(), cmd.getBytesWriteRate(), cmd.getIopsReadRate(), cmd.getIopsWriteRate());
+ cmd.getDeviceId().intValue(), cmd.getBytesReadRate(), cmd.getBytesWriteRate(), cmd.getIopsReadRate(), cmd.getIopsWriteRate(),
+ cmd.getCacheMode());
} catch (LibvirtException e) {
return new AttachVolumeAnswer(cmd, e.toString());
} catch (InternalErrorException e) {
@@ -3775,6 +3778,8 @@
disk.setIopsReadRate(volumeObjectTO.getIopsReadRate());
if ((volumeObjectTO.getIopsWriteRate() != null) && (volumeObjectTO.getIopsWriteRate() > 0))
disk.setIopsWriteRate(volumeObjectTO.getIopsWriteRate());
+ if (volumeObjectTO.getCacheMode() != null)
+ disk.setCacheMode(DiskDef.diskCacheMode.valueOf(volumeObjectTO.getCacheMode().toString()));
}
vm.getDevices().addDevice(disk);
}
@@ -3886,7 +3891,7 @@
protected synchronized String attachOrDetachDisk(Connect conn,
boolean attach, String vmName, KVMPhysicalDisk attachingDisk,
- int devId, Long bytesReadRate, Long bytesWriteRate, Long iopsReadRate, Long iopsWriteRate) throws LibvirtException, InternalErrorException {
+ int devId, Long bytesReadRate, Long bytesWriteRate, Long iopsReadRate, Long iopsWriteRate, String cacheMode) throws LibvirtException, InternalErrorException {
List<DiskDef> disks = null;
Domain dm = null;
DiskDef diskdef = null;
@@ -3934,6 +3939,10 @@
diskdef.setIopsReadRate(iopsReadRate);
if ((iopsWriteRate != null) && (iopsWriteRate > 0))
diskdef.setIopsWriteRate(iopsWriteRate);
+
+ if (cacheMode != null) {
+ diskdef.setCacheMode(DiskDef.diskCacheMode.valueOf(cacheMode));
+ }
}
String xml = diskdef.toString();
diff --git a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtDomainXMLParser.java b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtDomainXMLParser.java
index a283768..d0b0b61 100644
--- a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtDomainXMLParser.java
+++ b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtDomainXMLParser.java
@@ -36,6 +36,7 @@
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef.diskProtocol;
+import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.DiskDef.diskCacheMode;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.InterfaceDef;
import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.InterfaceDef.nicModel;
@@ -69,6 +70,7 @@
DiskDef def = new DiskDef();
if (type.equalsIgnoreCase("network")) {
String diskFmtType = getAttrValue("driver", "type", disk);
+ String diskCacheMode = getAttrValue("driver", "cache", disk);
String diskPath = getAttrValue("source", "name", disk);
String protocol = getAttrValue("source", "protocol", disk);
String authUserName = getAttrValue("auth", "username", disk);
@@ -78,9 +80,12 @@
String diskLabel = getAttrValue("target", "dev", disk);
String bus = getAttrValue("target", "bus", disk);
def.defNetworkBasedDisk(diskPath, host, port, authUserName, poolUuid, diskLabel,
- DiskDef.diskBus.valueOf(bus.toUpperCase()), DiskDef.diskProtocol.valueOf(protocol.toUpperCase()));
+ DiskDef.diskBus.valueOf(bus.toUpperCase()),
+ DiskDef.diskProtocol.valueOf(protocol.toUpperCase()));
+ def.setCacheMode(DiskDef.diskCacheMode.valueOf(diskCacheMode));
} else {
String diskFmtType = getAttrValue("driver", "type", disk);
+ String diskCacheMode = getAttrValue("driver", "cache", disk);
String diskFile = getAttrValue("source", "file", disk);
String diskDev = getAttrValue("source", "dev", disk);
@@ -103,6 +108,7 @@
} else if (type.equalsIgnoreCase("block")) {
def.defBlockBasedDisk(diskDev, diskLabel,
DiskDef.diskBus.valueOf(bus.toUpperCase()));
+ def.setCacheMode(DiskDef.diskCacheMode.valueOf(diskCacheMode));
}
}
diff --git a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtVMDef.java b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtVMDef.java
index 6aaabc5..80dbb23 100644
--- a/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtVMDef.java
+++ b/plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtVMDef.java
@@ -427,6 +427,23 @@
}
}
+ public enum diskCacheMode {
+ NONE("none"), WRITEBACK("writeback"), WRITETHROUGH("writethrough");
+ String _diskCacheMode;
+
+ diskCacheMode(String cacheMode) {
+ _diskCacheMode = cacheMode;
+ }
+
+ @Override
+ public String toString() {
+ if (_diskCacheMode == null) {
+ return "none";
+ }
+ return _diskCacheMode;
+ }
+ }
+
private deviceType _deviceType; /* floppy, disk, cdrom */
private diskType _diskType;
private diskProtocol _diskProtocol;
@@ -445,6 +462,7 @@
private Long _bytesWriteRate;
private Long _iopsReadRate;
private Long _iopsWriteRate;
+ private diskCacheMode _diskCacheMode;
public void setDeviceType(deviceType deviceType) {
_deviceType = deviceType;
@@ -606,6 +624,10 @@
_iopsWriteRate = iopsWriteRate;
}
+ public void setCacheMode(diskCacheMode cacheMode) {
+ _diskCacheMode = cacheMode;
+ }
+
@Override
public String toString() {
StringBuilder diskBuilder = new StringBuilder();
@@ -616,7 +638,7 @@
diskBuilder.append(" type='" + _diskType + "'");
diskBuilder.append(">\n");
diskBuilder.append("<driver name='qemu'" + " type='" + _diskFmtType
- + "' cache='none' " + "/>\n");
+ + "' cache='" + _diskCacheMode + "' " + "/>\n");
if (_diskType == diskType.FILE) {
diskBuilder.append("<source ");
if (_sourcePath != null) {
diff --git a/server/src/com/cloud/api/query/dao/DiskOfferingJoinDaoImpl.java b/server/src/com/cloud/api/query/dao/DiskOfferingJoinDaoImpl.java
index e29bb2b..fa620a7 100644
--- a/server/src/com/cloud/api/query/dao/DiskOfferingJoinDaoImpl.java
+++ b/server/src/com/cloud/api/query/dao/DiskOfferingJoinDaoImpl.java
@@ -79,6 +79,7 @@
diskOfferingResponse.setBytesWriteRate(offering.getBytesWriteRate());
diskOfferingResponse.setIopsReadRate(offering.getIopsReadRate());
diskOfferingResponse.setIopsWriteRate(offering.getIopsWriteRate());
+ diskOfferingResponse.setCacheMode(offering.getCacheMode());
diskOfferingResponse.setObjectName("diskoffering");
return diskOfferingResponse;
diff --git a/server/src/com/cloud/api/query/vo/DiskOfferingJoinVO.java b/server/src/com/cloud/api/query/vo/DiskOfferingJoinVO.java
index 9a679de..e925cd1 100644
--- a/server/src/com/cloud/api/query/vo/DiskOfferingJoinVO.java
+++ b/server/src/com/cloud/api/query/vo/DiskOfferingJoinVO.java
@@ -85,6 +85,9 @@
@Column(name="iops_write_rate")
Long iopsWriteRate;
+ @Column(name="cache_mode")
+ String cacheMode;
+
@Column(name="type")
Type type;
@@ -162,6 +165,18 @@
return maxIops;
}
+ public void setMaxIops(Long maxIops) {
+ this.maxIops = maxIops;
+ }
+
+ public String getCacheMode() {
+ return cacheMode;
+ }
+
+ public void setCacheMode(String cacheMode) {
+ this.cacheMode = cacheMode;
+ }
+
public boolean isDisplayOffering() {
return displayOffering;
}
diff --git a/ui/dictionary.jsp b/ui/dictionary.jsp
index 0ccfc23..45153d3 100644
--- a/ui/dictionary.jsp
+++ b/ui/dictionary.jsp
@@ -1078,6 +1078,7 @@
'label.storage.tags': '<fmt:message key="label.storage.tags" />',
'label.storage.type': '<fmt:message key="label.storage.type" />',
'label.qos.type': '<fmt:message key="label.qos.type" />',
+'label.cache.mode': '<fmt:message key="label.cache.mode" />',
'label.subdomain.access': '<fmt:message key="label.subdomain.access" />',
'label.submit': '<fmt:message key="label.submit" />',
'label.submitted.by': '<fmt:message key="label.submitted.by" />',
diff --git a/ui/scripts/configuration.js b/ui/scripts/configuration.js
index 9c05169..8144466 100644
--- a/ui/scripts/configuration.js
+++ b/ui/scripts/configuration.js
@@ -1354,6 +1354,28 @@
number: true
}
},
+ cacheMode: {
+ label: 'label.cache.mode',
+ docID: 'helpDiskOfferingCacheMode',
+ select: function(args) {
+ var items = [];
+ items.push({
+ id: 'none',
+ description: 'No disk cache'
+ });
+ items.push({
+ id: 'writeback',
+ description: 'Write-back disk caching'
+ });
+ items.push({
+ id: 'writethrough',
+ description: 'Write-through disk caching'
+ });
+ args.response.success({
+ data: items
+ });
+ }
+ },
tags: {
label: 'label.storage.tags',
docID: 'helpDiskOfferingStorageTags'
@@ -1400,6 +1422,7 @@
name: args.data.name,
displaytext: args.data.description,
storageType: args.data.storageType,
+ cacheMode: args.data.cacheMode,
customized: (args.data.isCustomized == "on")
};
@@ -1626,6 +1649,9 @@
diskIopsWriteRate: {
label: 'label.disk.iops.write.rate'
},
+ cacheMode: {
+ label: 'label.cache.mode',
+ },
tags: {
label: 'label.storage.tags'
},
diff --git a/ui/scripts/docs.js b/ui/scripts/docs.js
index a3151b1..279c84c 100755
--- a/ui/scripts/docs.js
+++ b/ui/scripts/docs.js
@@ -328,6 +328,9 @@
},
helpDiskOfferingHypervisorSnapshotReserve: {
desc: 'Hypervisor snapshot reserve space as a percent of a volume (for managed storage using Xen or VMware) (Ex. The value 25 means 25%.)).',
+ },
+ helpDiskOfferingCacheMode: {
+ desc: 'The write caching mode to use for disks created with this disk offering. This can improve write performance.',
externalLink: ''
},
helpDiskOfferingStorageTags: {
