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[libvirt] libvirt [PATCHv2 2/2] Add iSCSI backend storage driver for ESX.



The patch adds the backend driver to support iSCSI format storage pools
and volumes for ESX host. The mapping of ESX iSCSI specifics to Libvirt
is as follows:

1. ESX static iSCSI target <------> Libvirt Storage Pools
2. ESX iSCSI LUNs          <------> Libvirt Storage Volumes.

The above understanding is based on http://libvirt.org/storage.html.

The operation supported on iSCSI pools includes:

1. List storage pools & volumes.
2. Get xml descriptor operaion on pools & volumes.
3. Lookup operation on pools & volumes by name, uuid and path (if applicable).

iSCSI pools does not support operations such as: Create / remove pools
and volumes.
---
 src/Makefile.am                     |    1 +
 src/esx/esx_storage_backend_iscsi.c |  807 +++++++++++++++++++++++++++++++++++
 src/esx/esx_storage_backend_iscsi.h |   29 ++
 src/esx/esx_storage_driver.c        |    8 +-
 src/esx/esx_vi.c                    |  332 ++++++++++++++
 src/esx/esx_vi.h                    |   18 +
 src/esx/esx_vi_generator.input      |  302 +++++++++++++
 src/esx/esx_vi_generator.py         |   19 +
 8 files changed, 1515 insertions(+), 1 deletion(-)
 create mode 100644 src/esx/esx_storage_backend_iscsi.c
 create mode 100644 src/esx/esx_storage_backend_iscsi.h

diff --git a/src/Makefile.am b/src/Makefile.am
index 4026a15..1668b84 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -494,6 +494,7 @@ ESX_DRIVER_SOURCES =							\
 		esx/esx_network_driver.c esx/esx_network_driver.h	\
 		esx/esx_storage_driver.c esx/esx_storage_driver.h	\
 		esx/esx_storage_backend_vmfs.c esx/esx_storage_backend_vmfs.h	\
+		esx/esx_storage_backend_iscsi.c esx/esx_storage_backend_iscsi.h	\
 		esx/esx_device_monitor.c esx/esx_device_monitor.h	\
 		esx/esx_secret_driver.c esx/esx_secret_driver.h		\
 		esx/esx_nwfilter_driver.c esx/esx_nwfilter_driver.h	\
diff --git a/src/esx/esx_storage_backend_iscsi.c b/src/esx/esx_storage_backend_iscsi.c
new file mode 100644
index 0000000..fa4bf45
--- /dev/null
+++ b/src/esx/esx_storage_backend_iscsi.c
@@ -0,0 +1,807 @@
+/*
+ * esx_storage_backend_iscsi.c: ESX storage backend for iSCSI handling
+ *
+ * Copyright (C) 2012 Ata E Husain Bohra <ata husain hotmail com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+ *
+ */
+
+#include <config.h>
+
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "internal.h"
+#include "md5.h"
+#include "util.h"
+#include "memory.h"
+#include "logging.h"
+#include "uuid.h"
+
+#include "storage_conf.h"
+#include "storage_file.h"
+#include "esx_storage_backend_iscsi.h"
+#include "esx_private.h"
+#include "esx_vi.h"
+#include "esx_vi_methods.h"
+#include "esx_util.h"
+
+#define VIR_FROM_THIS VIR_FROM_STORAGE
+
+/*
+ * The UUID of a storage pool is the MD5 sum of it's mount path. Therefore,
+ * verify that UUID and MD5 sum match in size, because we rely on that.
+ */
+verify(MD5_DIGEST_SIZE == VIR_UUID_BUFLEN);
+
+
+
+static int
+esxStorageBackendISCSINumberOfStoragePools(virConnectPtr conn)
+{
+    int count = 0;
+    esxPrivate *priv = conn->storagePrivateData;
+    esxVI_HostInternetScsiHba *hostInternetScsiHba = NULL;
+    const esxVI_HostInternetScsiHbaStaticTarget *target = NULL;
+    bool success = false;
+
+    if (esxVI_LookupHostInternetScsiHba(
+          priv->primary, &hostInternetScsiHba) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+          _("Unable to obtain iSCSI adapter"));
+        goto cleanup;
+    }
+
+    /* FIXME: code looks for software iSCSI adapter only */
+    if (hostInternetScsiHba == NULL) {
+        /* iSCSI adapter may not be enabled for this host */
+        return 0;
+    }
+
+    /**
+     * ESX has two kind of targets:
+     * 1. staticIscsiTargets
+     * 2. dynamicIscsiTargets
+     * For each dynamic target if its reachable a static target is added.
+     * return iSCSI names for all static targets to avoid duplicate names.
+     */
+    for (target = hostInternetScsiHba->configuredStaticTarget;
+         target != NULL;
+         target = target->_next) {
+        ++count;
+    }
+
+    success = true;
+
+cleanup:
+
+    esxVI_HostInternetScsiHba_Free(&hostInternetScsiHba);
+
+    return success ? count : -1;
+
+}
+
+
+
+static int
+esxStorageBackendISCSIListStoragePools(virConnectPtr conn,
+                                       char **const names,
+                                       const int maxnames)
+{
+    int count = 0;
+    esxPrivate *priv = conn->storagePrivateData;
+    esxVI_HostInternetScsiHba *hostInternetScsiHba = NULL;
+    const esxVI_HostInternetScsiHbaStaticTarget *target = NULL;
+    bool success = false;
+    int i = 0;
+
+    if (maxnames ==0) {
+        return 0;
+    }
+
+    if (esxVI_LookupHostInternetScsiHba(
+          priv->primary, &hostInternetScsiHba) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+          _("Unable to obtain iSCSI adapter"));
+        goto cleanup;
+    }
+
+    /* FIXME: code looks for software iSCSI adapter only */
+    if (hostInternetScsiHba == NULL) {
+        /* iSCSI adapter may not be enabled for this host */
+        return 0;
+    }
+
+    /**
+     * ESX has two kind of targets:
+     * 1. staticIscsiTargets
+     * 2. dynamicIscsiTargets
+     * For each dynamic target if its reachable a static target is added.
+     * return iSCSI names for all static targets to avoid duplicate names.
+     */
+    for (target = hostInternetScsiHba->configuredStaticTarget;
+         target != NULL && count < maxnames;
+         target = target->_next, ++count) {
+        names[count] = strdup(target->iScsiName);
+
+        if (names[count] == NULL) {
+            virReportOOMError();
+            goto cleanup;
+        }
+    }
+
+    success = true;
+
+cleanup:
+    if (! success) {
+        for (i = 0; i < count; ++i) {
+            VIR_FREE(names[i]);
+        }
+        count = -1;
+    }
+
+    esxVI_HostInternetScsiHba_Free(&hostInternetScsiHba);
+
+    return success ? count : -1;
+}
+
+
+
+static virStoragePoolPtr
+esxStorageBackendISCSIPoolLookupByName(virConnectPtr conn,
+                                       const char *name)
+{
+    esxPrivate *priv = conn->storagePrivateData;
+    esxVI_HostInternetScsiHbaStaticTarget *target = NULL;
+    /* MD5_DIGEST_SIZE = VIR_UUID_BUFLEN = 16 */
+    unsigned char md5[MD5_DIGEST_SIZE];
+    virStoragePoolPtr pool = NULL;
+
+    /* lookup routine are used by the base driver to determine
+     * appropriate backend driver, lookup targetName as optional
+     * parameter
+     */
+    if (esxVI_LookupHostInternetScsiHbaStaticTargetByName(
+          priv->primary, name, &target, esxVI_Occurrence_OptionalItem) < 0 ||
+        target == NULL) {
+        goto cleanup;
+    }
+
+    /**
+     * HostInternetScsiHbaStaticTarget does not provide a uuid field,
+     * but iScsiName (or widely known as IQN) is unique across the multiple
+     * hosts, using it to compute key
+     */
+
+    md5_buffer(target->iScsiName, strlen(target->iScsiName), md5);
+
+    pool = virGetStoragePool(conn, name, md5, &esxStorageBackendISCSIDrv, NULL);
+
+ cleanup:
+
+    esxVI_HostInternetScsiHbaStaticTarget_Free(&target);
+
+    return pool;
+
+}
+
+
+
+static virStoragePoolPtr
+esxStorageBackendISCSIPoolLookupByUUID(virConnectPtr conn,
+                                       const unsigned char *uuid)
+{
+    virStoragePoolPtr pool = NULL;
+    esxPrivate *priv = conn->storagePrivateData;
+    esxVI_HostInternetScsiHba *hostInternetScsiHba = NULL;
+    const esxVI_HostInternetScsiHbaStaticTarget *target = NULL;
+    /* MD5_DIGEST_SIZE = VIR_UUID_BUFLEN = 16 */
+    unsigned char md5[MD5_DIGEST_SIZE];
+
+    if (esxVI_LookupHostInternetScsiHba(
+          priv->primary, &hostInternetScsiHba) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+          _("Unable to obtain iSCSI adapter"));
+        goto cleanup;
+    }
+
+    /* FIXME: code just looks for software iSCSI adapter */
+    if (hostInternetScsiHba == NULL) {
+        /* iSCSI adapter may not be enabled for this host */
+        return NULL;
+    }
+
+    for (target = hostInternetScsiHba->configuredStaticTarget;
+         target != NULL;
+         target = target->_next) {
+        md5_buffer(target->iScsiName, strlen(target->iScsiName), md5);
+
+        if (memcmp(uuid, md5, VIR_UUID_STRING_BUFLEN) == 0) {
+            break;
+        }
+    }
+
+    if (target == NULL) {
+        /* pool not found, error handling done by the base driver */
+        goto cleanup;
+    }
+
+    pool = virGetStoragePool(conn,
+                             target->iScsiName,
+                             md5,
+                             &esxStorageBackendISCSIDrv,
+                             NULL);
+
+ cleanup:
+    esxVI_HostInternetScsiHba_Free(&hostInternetScsiHba);
+
+    return pool;
+
+}
+
+
+
+static int
+esxStorageBackendISCSIPoolRefresh(virStoragePoolPtr pool,
+                                  unsigned int flags)
+{
+    int result = -1;
+    esxPrivate *priv = pool->conn->storagePrivateData;
+    esxVI_ManagedObjectReference *hostStorageSystem = NULL;
+    esxVI_HostInternetScsiHba *hostInternetScsiHba = NULL;
+    esxVI_ObjectContent *hostSystem = NULL;
+    esxVI_String *propertyNameList = NULL;
+
+    virCheckFlags(0, -1);
+
+    if (esxVI_String_AppendValueToList(&propertyNameList,
+          "configManager.storageSystem\0") < 0 ||
+        esxVI_LookupHostSystemProperties(priv->primary,
+            propertyNameList, &hostSystem) < 0 ||
+        esxVI_GetManagedObjectReference(hostSystem,
+            "configManager.storageSystem", &hostStorageSystem,
+            esxVI_Occurrence_RequiredItem) < 0 ||
+        esxVI_LookupHostInternetScsiHba(
+            priv->primary, &hostInternetScsiHba) < 0) {
+        goto cleanup;
+    }
+
+     /**
+      * ESX does not allow rescan on a particular target,
+      * rescan all the static targets
+     */
+    if (esxVI_RescanHba(priv->primary, hostStorageSystem,
+                        hostInternetScsiHba->device) < 0) {
+        goto cleanup;
+    }
+
+    result = 0;
+
+ cleanup:
+    esxVI_String_Free(&propertyNameList);
+    esxVI_ManagedObjectReference_Free(&hostStorageSystem);
+    esxVI_ObjectContent_Free(&hostSystem);
+    esxVI_HostInternetScsiHba_Free(&hostInternetScsiHba);
+
+    return result;
+
+}
+
+
+
+static int
+esxStorageBackendISCSIPoolGetInfo(virStoragePoolPtr pool ATTRIBUTE_UNUSED,
+                                  virStoragePoolInfoPtr info)
+{
+    /* these fields are not valid for iSCSI pool */
+    info->allocation = info->capacity = info->available = 0;
+    info->state = VIR_STORAGE_POOL_RUNNING;
+
+    return 0;
+}
+
+
+
+static char *
+esxStorageBackendISCSIPoolGetXMLDesc(virStoragePoolPtr pool, unsigned int flags)
+{
+    char *xml = NULL;
+    esxPrivate *priv = pool->conn->storagePrivateData;
+    esxVI_HostInternetScsiHba *hostInternetScsiHba = NULL;
+    const esxVI_HostInternetScsiHbaStaticTarget *target = NULL;
+    virStoragePoolDef def;
+
+    virCheckFlags(0, NULL);
+
+    memset(&def, 0, sizeof(def));
+
+    if (esxVI_LookupHostInternetScsiHba(priv->primary, &hostInternetScsiHba)) {
+        goto cleanup;
+    }
+
+    for (target = hostInternetScsiHba->configuredStaticTarget;
+         target != NULL;
+         target = target->_next) {
+        if (STREQ(target->iScsiName, pool->name)) {
+            break;
+        }
+    }
+
+    if (target == NULL) {
+        /* pool not found */
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+          _("Could not find storage pool with name '%s'"), pool->name);
+        goto cleanup;
+    }
+
+    def.name = pool->name;
+    memcpy(def.uuid, pool->uuid, VIR_UUID_BUFLEN);
+
+    def.type = VIR_STORAGE_POOL_ISCSI;
+
+    def.source.initiator.iqn = target->iScsiName;
+
+    def.source.nhost = 1;
+    if (VIR_ALLOC_N(def.source.hosts, def.source.nhost) < 0) {
+        virReportOOMError();
+        goto cleanup;
+    }
+
+    def.source.hosts[0].name = target->address;
+    if (target->port) {
+        def.source.hosts[0].port = target->port->value;
+    }
+
+    /* TODO: add CHAP authentication params */
+
+    xml = virStoragePoolDefFormat(&def);
+
+  cleanup:
+
+    VIR_FREE(def.source.hosts);
+    esxVI_HostInternetScsiHba_Free(&hostInternetScsiHba);
+
+    return xml;
+
+}
+
+
+
+static int
+esxStorageBackendISCSIPoolNumberOfStorageVolumes(virStoragePoolPtr pool)
+{
+    int  count = 0;
+    esxPrivate *priv = pool->conn->storagePrivateData;
+    esxVI_HostScsiTopologyLun *hostScsiTopologyLunList = NULL;
+    const esxVI_HostScsiTopologyLun *hostScsiTopologyLun = NULL;
+    bool success = false;
+
+    if (esxVI_LookupHostScsiTopologyLunListByTargetName(
+          priv->primary, pool->name, &hostScsiTopologyLunList) < 0) {
+        goto cleanup;
+    }
+
+    for (hostScsiTopologyLun = hostScsiTopologyLunList ;
+         hostScsiTopologyLun != NULL;
+         hostScsiTopologyLun = hostScsiTopologyLun->_next) {
+        ++count;
+    }
+
+    success = true;
+
+  cleanup:
+
+    esxVI_HostScsiTopologyLun_Free(&hostScsiTopologyLunList);
+
+    return success ? count : -1;
+
+}
+
+
+static int
+esxStorageBackendISCSIPoolListStorageVolumes(virStoragePoolPtr pool,
+                                             char **const names,
+                                             int maxnames)
+{
+    int  count = 0;
+    esxPrivate *priv = pool->conn->storagePrivateData;
+    esxVI_HostScsiTopologyLun *hostScsiTopologyLunList = NULL;
+    const esxVI_HostScsiTopologyLun *hostScsiTopologyLun = NULL;
+    esxVI_ScsiLun *scsiLunList = NULL;
+    const esxVI_ScsiLun *scsiLun = NULL;
+    bool success = false;
+    int i = 0;
+
+    if (esxVI_LookupHostScsiTopologyLunListByTargetName(
+          priv->primary, pool->name, &hostScsiTopologyLunList) < 0) {
+        goto cleanup;
+    }
+
+    if (hostScsiTopologyLunList == NULL) {
+        /* iSCSI adapter may not be enabled on ESX host */
+        return 0;
+    }
+
+    if (esxVI_LookupScsiLunList(priv->primary, &scsiLunList) < 0) {
+        goto cleanup;
+    }
+
+    /* O^2 but still faster than hash given N is not that large */
+    for (scsiLun = scsiLunList; scsiLun != NULL && count < maxnames;
+         scsiLun = scsiLun->_next) {
+        for (hostScsiTopologyLun = hostScsiTopologyLunList;
+             hostScsiTopologyLun != NULL && count < maxnames;
+             hostScsiTopologyLun = hostScsiTopologyLun->_next) {
+            if (STREQ(hostScsiTopologyLun->scsiLun, scsiLun->key)) {
+                names[count] = strdup(scsiLun->deviceName);
+
+                if (names[count] == NULL) {
+                    virReportOOMError();
+                    goto cleanup;
+                }
+                ++count;
+            }
+        }
+    }
+
+    success = true;
+
+  cleanup:
+    if (! success) {
+        for (i = 0; i < count; ++i) {
+            VIR_FREE(names[i]);
+        }
+        count = -1;
+    }
+
+    esxVI_HostScsiTopologyLun_Free(&hostScsiTopologyLunList);
+    esxVI_ScsiLun_Free(&scsiLunList);
+
+    return count;
+}
+
+
+static virStorageVolPtr
+esxStorageBackendISCSIVolumeLookupByName(virStoragePoolPtr pool,
+                                         const char *name)
+{
+    virStorageVolPtr volume = NULL;
+    esxPrivate *priv = pool->conn->storagePrivateData;
+    esxVI_ScsiLun *scsiLunList = NULL;
+    const esxVI_ScsiLun *scsiLun = NULL;
+    /* MD5_DIGEST_SIZE = VIR_UUID_BUFLEN = 16 */
+    unsigned char md5[MD5_DIGEST_SIZE];
+    char uuid_string[VIR_UUID_STRING_BUFLEN] = "";
+
+    if (esxVI_LookupScsiLunList(priv->primary, &scsiLunList) < 0) {
+        goto cleanup;
+    }
+
+    for (scsiLun = scsiLunList; scsiLun != NULL;
+         scsiLun = scsiLun->_next) {
+        if (STREQ(scsiLun->deviceName, name)) {
+            /**
+             * ScsiLun provides an UUID field that is unique accross
+             * multiple servers. But this field length is ~55 characters
+             * compute MD5 hash to transform it to an acceptable
+             * libvirt format
+             */
+            md5_buffer(scsiLun->uuid, strlen(scsiLun->uuid), md5);
+
+            virUUIDFormat(md5, uuid_string);
+
+            /**
+             * ScsiLun provides displayName and canonicalName but both are
+             * optional and its observed that they can be NULL, using
+             * deviceName to create volume.
+             */
+            volume = virGetStorageVol(pool->conn, pool->name, name, uuid_string,
+                                      &esxStorageBackendISCSIDrv, NULL);
+            break;
+        }
+    }
+
+  cleanup:
+
+    esxVI_ScsiLun_Free(&scsiLunList);
+
+    return volume;
+
+}
+
+
+static virStorageVolPtr
+esxStorageBackendISCSIVolumeLookupByPath(virConnectPtr conn, const char *path)
+{
+    virStorageVolPtr volume = NULL;
+    esxPrivate *priv = conn->storagePrivateData;
+    char *poolName = NULL;
+    esxVI_ScsiLun *scsiLunList = NULL;
+    esxVI_ScsiLun *scsiLun = NULL;
+    const esxVI_HostScsiDisk *hostScsiDisk = NULL;
+    /* MD5_DIGEST_SIZE = VIR_UUID_BUFLEN = 16 */
+    unsigned char md5[MD5_DIGEST_SIZE];
+    char uuid_string[VIR_UUID_STRING_BUFLEN] = "";
+
+    if (esxVI_LookupScsiLunList(priv->primary, &scsiLunList) < 0) {
+        goto cleanup;
+    }
+
+    for (scsiLun = scsiLunList ; scsiLun != NULL;
+         scsiLun = scsiLun->_next) {
+         hostScsiDisk = esxVI_HostScsiDisk_DynamicCast(scsiLun);
+
+        if (hostScsiDisk != NULL &&
+            STREQ(hostScsiDisk->devicePath, path)) {
+            /* Found matching device */
+            if (esxVI_LookupStoragePoolNameByScsiLunKey(
+                  priv->primary, hostScsiDisk->key, &poolName) < 0) {
+                goto cleanup;
+            }
+
+            md5_buffer(scsiLun->uuid, strlen(scsiLun->uuid), md5);
+
+            virUUIDFormat(md5, uuid_string);
+
+            volume = virGetStorageVol(conn, poolName, path, uuid_string,
+                                      &esxStorageBackendISCSIDrv, NULL);
+            break;
+        }
+    }
+
+  cleanup:
+
+    esxVI_ScsiLun_Free(&scsiLunList);
+    VIR_FREE(poolName);
+
+    return volume;
+
+}
+
+
+static virStorageVolPtr
+esxStorageBackendISCSIVolumeLookupByKey(virConnectPtr conn, const char *key)
+{
+    virStorageVolPtr volume = NULL;
+    esxPrivate *priv = conn->storagePrivateData;
+    char *poolName = NULL;
+    esxVI_ScsiLun *scsiLunList = NULL;
+    const esxVI_ScsiLun *scsiLun = NULL;
+    /* MD5_DIGEST_SIZE = VIR_UUID_BUFLEN = 16 */
+    unsigned char md5[MD5_DIGEST_SIZE];
+    char uuid_string[VIR_UUID_STRING_BUFLEN] = "";
+
+
+    /* key may be LUN device path */
+    if (STRPREFIX(key, "/")) {
+        return esxStorageBackendISCSIVolumeLookupByPath(conn, key);
+    }
+
+    if (esxVI_LookupScsiLunList(priv->primary, &scsiLunList) < 0) {
+        goto cleanup;
+    }
+
+    for (scsiLun = scsiLunList; scsiLun != NULL;
+         scsiLun = scsiLun->_next) {
+
+        memset(uuid_string, '\0', sizeof(uuid_string));
+        memset(md5, '\0', sizeof(md5));
+
+        md5_buffer(scsiLun->uuid, strlen(scsiLun->uuid), md5);
+
+        virUUIDFormat(md5, uuid_string);
+
+        if (STREQ(key, uuid_string)) {
+            /* Found matching UUID */
+            if (esxVI_LookupStoragePoolNameByScsiLunKey(
+                  priv->primary, scsiLun->key, &poolName) < 0) {
+                goto cleanup;
+            }
+
+            volume = virGetStorageVol(conn,
+                                      poolName,
+                                      scsiLun->deviceName,
+                                      uuid_string,
+                                      &esxStorageBackendISCSIDrv,
+                                      NULL);
+            break;
+        }
+    }
+
+  cleanup:
+
+    esxVI_ScsiLun_Free(&scsiLunList);
+    VIR_FREE(poolName);
+
+    return volume;
+
+}
+
+
+
+static virStorageVolPtr
+esxStorageBackendISCSIVolumeCreateXML(virStoragePoolPtr pool ATTRIBUTE_UNUSED,
+                                      const char *xmldesc ATTRIBUTE_UNUSED,
+                                      unsigned int flags)
+{
+    virCheckFlags(0, NULL);
+
+    /* not supported operation for iSCSI pools */
+    return NULL;
+}
+
+
+
+static virStorageVolPtr
+esxStorageBackendISCSIVolumeCreateXMLFrom(
+  virStoragePoolPtr pool ATTRIBUTE_UNUSED,
+  const char *xmldesc ATTRIBUTE_UNUSED,
+  virStorageVolPtr sourceVolume ATTRIBUTE_UNUSED,
+  unsigned int flags)
+{
+    virCheckFlags(0, NULL);
+
+    /* not supported operation for iSCSI pools */
+    return NULL;
+}
+
+
+
+static char*
+esxStorageBackendISCSIVolumeGetXMLDesc(virStorageVolPtr volume,
+                                       unsigned int flags)
+{
+    char *xml = NULL;
+    esxPrivate *priv = volume->conn->storagePrivateData;
+    virStoragePoolDef pool;
+    esxVI_ScsiLun *scsiLunList = NULL;
+    const esxVI_ScsiLun *scsiLun = NULL;
+    const esxVI_HostScsiDisk *hostScsiDisk = NULL;
+    virStorageVolDef def;
+    /* MD5_DIGEST_SIZE = VIR_UUID_BUFLEN = 16 */
+    unsigned char md5[MD5_DIGEST_SIZE];
+    char uuid_string[VIR_UUID_STRING_BUFLEN] = "";
+
+    virCheckFlags(0, NULL);
+
+    memset(&pool, 0, sizeof(pool));
+    memset(&def, 0, sizeof(def));
+
+    if (esxVI_LookupScsiLunList(priv->primary, &scsiLunList) < 0) {
+        goto cleanup;
+    }
+
+    for (scsiLun = scsiLunList; scsiLun != NULL;
+         scsiLun = scsiLun->_next) {
+         hostScsiDisk =
+             esxVI_HostScsiDisk_DynamicCast((esxVI_ScsiLun *)scsiLun);
+
+        if (hostScsiDisk != NULL &&
+            STREQ(hostScsiDisk->deviceName, volume->name)) {
+            break;
+        }
+    }
+
+    if (hostScsiDisk == NULL) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+          _("Could find volume with name: %s"), volume->name);
+        goto cleanup;
+    }
+
+    pool.type = VIR_STORAGE_POOL_ISCSI;
+
+    def.name = volume->name;
+
+    md5_buffer(scsiLun->uuid, strlen(hostScsiDisk->uuid), md5);
+
+    virUUIDFormat(md5, uuid_string);
+
+    if (esxVI_String_DeepCopyValue(&def.key, uuid_string) < 0) {
+        goto cleanup;
+    }
+
+    /* iSCSI LUN exposes a block device */
+    def.type = VIR_STORAGE_VOL_BLOCK;
+
+    def.target.path = hostScsiDisk->devicePath;
+
+    def.capacity = hostScsiDisk->capacity->block->value *
+                   hostScsiDisk->capacity->blockSize->value;
+
+    def.allocation = def.capacity;
+
+    /* iSCSI LUN(s) hosting a datastore will be auto-mounted by
+     * ESX host
+     */
+    def.target.format = VIR_STORAGE_FILE_RAW;
+
+    xml = virStorageVolDefFormat(&pool, &def);
+
+  cleanup:
+
+    esxVI_ScsiLun_Free(&scsiLunList);
+    VIR_FREE(def.key);
+
+    return xml;
+
+}
+
+static int
+esxStorageBackendISCSIVolumeDelete(virStorageVolPtr volume ATTRIBUTE_UNUSED,
+                                   unsigned int flags)
+{
+    virCheckFlags(0, -1);
+
+    /* unsupported operation for iSCSI volume */
+    return 1;
+
+}
+
+
+
+static int
+esxStorageBackendISCSIVolumeWipe(virStorageVolPtr volume ATTRIBUTE_UNUSED,
+                                   unsigned int flags)
+{
+    virCheckFlags(0, -1);
+
+    /* unsupported operation for iSCSI volume */
+    return 1;
+
+}
+
+
+
+static char*
+esxStorageBackendISCSIVolumeGetPath(virStorageVolPtr volume)
+{
+    char *path;
+
+    if (virAsprintf(&path, "%s", volume->name) < 0) {
+        virReportOOMError();
+        return NULL;
+    }
+
+    return path;
+
+}
+
+
+
+virStorageDriver esxStorageBackendISCSIDrv = {
+    .name = "ESX ISCSI backend",
+    .open = NULL, /* 1.0.0 */
+    .close = NULL, /* 1.0.0 */
+    .numOfPools = esxStorageBackendISCSINumberOfStoragePools, /* 1.0.0 */
+    .listPools = esxStorageBackendISCSIListStoragePools, /* 1.0.0 */
+    .poolLookupByName = esxStorageBackendISCSIPoolLookupByName, /* 1.0.0 */
+    .poolLookupByUUID = esxStorageBackendISCSIPoolLookupByUUID, /* 1.0.0 */
+    .poolRefresh = esxStorageBackendISCSIPoolRefresh, /* 1.0.0 */
+    .poolGetInfo = esxStorageBackendISCSIPoolGetInfo, /* 1.0.0 */
+    .poolGetXMLDesc = esxStorageBackendISCSIPoolGetXMLDesc, /* 1.0.0 */
+    .poolNumOfVolumes = esxStorageBackendISCSIPoolNumberOfStorageVolumes, /* 1.0.0 */
+    .poolListVolumes = esxStorageBackendISCSIPoolListStorageVolumes, /* 1.0.0 */
+    .volLookupByName = esxStorageBackendISCSIVolumeLookupByName, /* 1.0.0 */
+    .volLookupByKey = esxStorageBackendISCSIVolumeLookupByKey, /* 1.0.0 */
+    .volLookupByPath = esxStorageBackendISCSIVolumeLookupByPath, /* 1.0.0 */
+    .volCreateXML = esxStorageBackendISCSIVolumeCreateXML, /* 1.0.0 */
+    .volCreateXMLFrom = esxStorageBackendISCSIVolumeCreateXMLFrom, /* 1.0.0 */
+    .volGetXMLDesc = esxStorageBackendISCSIVolumeGetXMLDesc, /* 1.0.0 */
+    .volDelete = esxStorageBackendISCSIVolumeDelete, /* 1.0.0 */
+    .volWipe = esxStorageBackendISCSIVolumeWipe, /* 1.0.0 */
+    .volGetPath = esxStorageBackendISCSIVolumeGetPath, /* 1.0.0 */
+};
diff --git a/src/esx/esx_storage_backend_iscsi.h b/src/esx/esx_storage_backend_iscsi.h
new file mode 100644
index 0000000..f78da46
--- /dev/null
+++ b/src/esx/esx_storage_backend_iscsi.h
@@ -0,0 +1,29 @@
+/*
+ * esx_storage_backend_iscsi.h: ESX storage backend for iSCSI handling
+ *
+ * Copyright (C) 2012 Ata E Husain Bohra <ata husain hotmail com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef __ESX_STORAGE_BACKEND_ISCSI_H__
+# define __ESX_STORAGE_BACKEND_ISCSI_H__
+
+# include "driver.h"
+
+extern virStorageDriver esxStorageBackendISCSIDrv;
+
+#endif /* __ESX_STORAGE_BACKEND_ISCSI_H__ */
diff --git a/src/esx/esx_storage_driver.c b/src/esx/esx_storage_driver.c
index 5530ea7..6952c69 100644
--- a/src/esx/esx_storage_driver.c
+++ b/src/esx/esx_storage_driver.c
@@ -31,6 +31,7 @@
 #include "esx_private.h"
 #include "esx_storage_driver.h"
 #include "esx_storage_backend_vmfs.h"
+#include "esx_storage_backend_iscsi.h"
 
 #define VIR_FROM_THIS VIR_FROM_ESX
 
@@ -42,11 +43,13 @@
 */
 enum {
     VMFS = 0,
+    ISCSI,
     LAST_DRIVER
 };
 
 static virStorageDriverPtr backendDrv[] = {
-    &esxStorageBackendVMFSDrv
+    &esxStorageBackendVMFSDrv,
+    &esxStorageBackendISCSIDrv
 };
 
 static virDrvOpenStatus
@@ -465,9 +468,12 @@ esxStorageVolumeLookupByPath(virConnectPtr conn, const char *path)
      * VMFS Datastore path follows cannonical format i.e.:
      * [<datastore_name>] <file_path>
      *          WHEREAS
+     * iSCSI LUNs device path follows normal linux path convention
      */
     if (STRPREFIX(path, "[")) {
         volume = backendDrv[VMFS]->volLookupByPath(conn, path);
+    } else if (STRPREFIX(path, "/")) {
+        volume = backendDrv[ISCSI]->volLookupByPath(conn, path);
     } else {
         virReportError(VIR_ERR_INTERNAL_ERROR,
           _("Unexpected volume path format: %s"), path);
diff --git a/src/esx/esx_vi.c b/src/esx/esx_vi.c
index 9fb2c11..12100d7 100644
--- a/src/esx/esx_vi.c
+++ b/src/esx/esx_vi.c
@@ -4875,5 +4875,337 @@ esxVI_LookupManagedObjectHelper(esxVI_Context *ctx,
 }
 
 
+int
+esxVI_LookupHostInternetScsiHbaStaticTargetByName(
+  esxVI_Context *ctx,
+  const char *name,
+  esxVI_HostInternetScsiHbaStaticTarget **ret,
+  esxVI_Occurrence occurrence)
+{
+    int result = -1;
+    esxVI_HostInternetScsiHba *hostInternetScsiHba = NULL;
+    const esxVI_HostInternetScsiHbaStaticTarget *target = NULL;
+
+    if (esxVI_LookupHostInternetScsiHba(ctx, &hostInternetScsiHba) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+          _("Unable to obtain hostInternetScsiHba"));
+        goto cleanup;
+    }
+
+    if (hostInternetScsiHba == NULL) {
+        /* iSCSI adapter may not be enabled for this host */
+        return 0;
+    }
+
+    for (target = hostInternetScsiHba->configuredStaticTarget;
+         target != NULL;
+         target = target->_next) {
+        if (STREQ(target->iScsiName, name)) {
+            break;
+        }
+    }
+
+    if (target == NULL) {
+        if (occurrence == esxVI_Occurrence_RequiredItem) {
+            virReportError(VIR_ERR_INTERNAL_ERROR,
+              _("Could not find storage pool with name: %s"), name);
+        }
+        goto cleanup;
+    }
+
+    if (esxVI_HostInternetScsiHbaStaticTarget_DeepCopy(
+          ret, (esxVI_HostInternetScsiHbaStaticTarget *)target) < 0) {
+        goto cleanup;
+    }
+
+    result = 0;
+
+  cleanup:
+
+    esxVI_HostInternetScsiHba_Free(&hostInternetScsiHba);
+
+    return result;
+}
+
+
+int
+esxVI_LookupHostInternetScsiHba(
+  esxVI_Context *ctx,
+  esxVI_HostInternetScsiHba **hostInternetScsiHba)
+{
+    int result = -1;
+    esxVI_DynamicProperty *dynamicProperty = NULL;
+    esxVI_ObjectContent *hostSystem = NULL;
+    esxVI_String *propertyNameList = NULL;
+    esxVI_HostHostBusAdapter *hostHostBusAdapterList = NULL;
+    esxVI_HostHostBusAdapter *hostHostBusAdapter = NULL;
+
+    if (esxVI_String_AppendValueToList(&propertyNameList,
+          "config.storageDevice.hostBusAdapter\0") < 0 ||
+        esxVI_LookupHostSystemProperties(ctx, propertyNameList,
+            &hostSystem) < 0) {
+        goto cleanup;
+    }
+
+    for (dynamicProperty = hostSystem->propSet;
+         dynamicProperty != NULL;
+         dynamicProperty = dynamicProperty->_next) {
+        if (STREQ(dynamicProperty->name,
+              "config.storageDevice.hostBusAdapter")) {
+            if (esxVI_HostHostBusAdapter_CastListFromAnyType(
+                  dynamicProperty->val, &hostHostBusAdapterList) < 0 ||
+                hostHostBusAdapterList == NULL) {
+                goto cleanup;
+            }
+        } else {
+            VIR_WARN("Unexpected '%s' property", dynamicProperty->name);
+        }
+    }
+
+    /* See vSphere API documentation about HostInternetScsiHba for details */
+    for (hostHostBusAdapter = hostHostBusAdapterList;
+         hostHostBusAdapter != NULL;
+         hostHostBusAdapter = hostHostBusAdapter->_next) {
+        esxVI_HostInternetScsiHba *candidate=
+            esxVI_HostInternetScsiHba_DynamicCast(hostHostBusAdapter);
+
+        if (candidate) {
+            if (esxVI_HostInternetScsiHba_DeepCopy(hostInternetScsiHba,
+                  candidate) < 0) {
+                goto cleanup;
+            }
+            break;
+        }
+    }
+
+    result = 0;
+
+cleanup:
+    esxVI_String_Free(&propertyNameList);
+    esxVI_ObjectContent_Free(&hostSystem);
+    esxVI_HostHostBusAdapter_Free(&hostHostBusAdapterList);
+
+    return result;
+}
+
+
+int
+esxVI_LookupScsiLunList(esxVI_Context *ctx,
+                        esxVI_ScsiLun **ret)
+{
+    int result = -1;
+    esxVI_DynamicProperty *dynamicProperty = NULL;
+    esxVI_ObjectContent *hostSystem = NULL;
+    esxVI_String *propertyNameList = NULL;
+    esxVI_ScsiLun *scsiLunList = NULL;
+
+    if (esxVI_String_AppendValueToList(&propertyNameList,
+        "config.storageDevice.scsiLun\0") < 0 ||
+        esxVI_LookupHostSystemProperties(
+            ctx, propertyNameList, &hostSystem) < 0) {
+        goto cleanup;
+    }
+
+    for (dynamicProperty = hostSystem->propSet;
+         dynamicProperty != NULL;
+         dynamicProperty = dynamicProperty->_next) {
+        if (STREQ(dynamicProperty->name,
+                     "config.storageDevice.scsiLun")) {
+            if (esxVI_ScsiLun_CastListFromAnyType(dynamicProperty->val,
+                                                  &scsiLunList) < 0) {
+                goto cleanup;
+            }
+        } else {
+            VIR_WARN("Unexpected '%s' property", dynamicProperty->name);
+        }
+    }
+
+    if (scsiLunList == NULL ||
+        esxVI_ScsiLun_DeepCopyList(ret, scsiLunList) < 0) {
+        goto cleanup;
+    }
+
+    result = 0;
+
+cleanup:
+
+    esxVI_ScsiLun_Free(&scsiLunList);
+
+    return result;
+
+}
+
+
+int
+esxVI_LookupHostScsiTopologyLunListByTargetName(
+  esxVI_Context *ctx, const char *name, esxVI_HostScsiTopologyLun **ret)
+{
+    int result = -1;
+    esxVI_DynamicProperty *dynamicProperty = NULL;
+    esxVI_ObjectContent *hostSystem = NULL;
+    esxVI_String *propertyNameList = NULL;
+    esxVI_HostScsiTopologyInterface *hostScsiInterfaceList = NULL;
+    const esxVI_HostScsiTopologyInterface *hostScsiInterface = NULL;
+    const esxVI_HostScsiTopologyTarget *hostScsiTopologyTarget = NULL;
+    bool found = false;
+
+    if (esxVI_String_AppendValueToList(&propertyNameList,
+        "config.storageDevice.scsiTopology.adapter\0") < 0 ||
+        esxVI_LookupHostSystemProperties(
+            ctx, propertyNameList, &hostSystem) < 0) {
+        goto cleanup;
+    }
+
+    for (dynamicProperty = hostSystem->propSet;
+         dynamicProperty != NULL;
+         dynamicProperty = dynamicProperty->_next) {
+        if (STREQ(dynamicProperty->name,
+              "config.storageDevice.scsiTopology.adapter")) {
+            esxVI_HostScsiTopologyInterface_Free(&hostScsiInterfaceList);
+
+            if ((esxVI_HostScsiTopologyInterface_CastListFromAnyType
+                  (dynamicProperty->val, &hostScsiInterfaceList) < 0)) {
+                goto cleanup;
+            }
+        } else {
+            VIR_WARN("Unexpected '%s' property", dynamicProperty->name);
+        }
+    }
+
+    if (hostScsiInterfaceList == NULL) {
+        /* iSCSI adapter may not be enabled */
+        return 0;
+    }
+
+    /* See vSphere API documentation about HostScsiTopologyInterface */
+    for (hostScsiInterface = hostScsiInterfaceList;
+         hostScsiInterface != NULL && !found;
+         hostScsiInterface = hostScsiInterface->_next) {
+        for (hostScsiTopologyTarget = hostScsiInterface->target;
+             hostScsiTopologyTarget != NULL;
+             hostScsiTopologyTarget = hostScsiTopologyTarget->_next) {
+            const esxVI_HostInternetScsiTargetTransport *candidate =
+                esxVI_HostInternetScsiTargetTransport_DynamicCast(
+                  hostScsiTopologyTarget->transport);
+
+            if (candidate && STREQ(candidate->iScsiName, name)) {
+                found = true;
+                break;
+            }
+        }
+    }
+
+    if (!found || hostScsiTopologyTarget == NULL) {
+        goto cleanup;
+    }
+
+    if (esxVI_HostScsiTopologyLun_DeepCopyList(
+          ret, hostScsiTopologyTarget->lun) < 0) {
+        goto cleanup;
+    }
+
+    if (*ret == NULL) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+          _("Target not found"));
+        goto cleanup;
+    }
+
+    result = 0;
+
+  cleanup:
+
+    esxVI_String_Free(&propertyNameList);
+    esxVI_ObjectContent_Free(&hostSystem);
+    esxVI_HostScsiTopologyInterface_Free(&hostScsiInterfaceList);
+
+    return result;
+}
+
+
+int
+esxVI_LookupStoragePoolNameByScsiLunKey(esxVI_Context *ctx,
+                                        const char *key,
+                                        char **poolName)
+{
+    int result = -1;
+    esxVI_DynamicProperty *dynamicProperty = NULL;
+    esxVI_ObjectContent *hostSystem = NULL;
+    esxVI_String *propertyNameList = NULL;
+    esxVI_HostScsiTopologyInterface *hostScsiInterfaceList = NULL;
+    const esxVI_HostScsiTopologyInterface *hostScsiInterface = NULL;
+    const esxVI_HostScsiTopologyTarget *hostScsiTopologyTarget = NULL;
+    bool found = false;
+
+    if (esxVI_String_AppendValueToList(&propertyNameList,
+        "config.storageDevice.scsiTopology.adapter\0") < 0 ||
+        esxVI_LookupHostSystemProperties(
+            ctx, propertyNameList, &hostSystem) < 0) {
+        goto cleanup;
+    }
+
+    for (dynamicProperty = hostSystem->propSet;
+         dynamicProperty != NULL;
+         dynamicProperty = dynamicProperty->_next) {
+        if (STREQ(dynamicProperty->name,
+              "config.storageDevice.scsiTopology.adapter")) {
+            esxVI_HostScsiTopologyInterface_Free(&hostScsiInterfaceList);
+
+            if ((esxVI_HostScsiTopologyInterface_CastListFromAnyType
+                  (dynamicProperty->val, &hostScsiInterfaceList) < 0)) {
+                goto cleanup;
+            }
+        } else {
+            VIR_WARN("Unexpected '%s' property", dynamicProperty->name);
+        }
+    }
+
+    if (hostScsiInterfaceList == NULL) {
+        /* iSCSI adapter may not be enabled */
+        return 0;
+    }
+
+    /* See vSphere API documentation about HostScsiTopologyInterface */
+    for (hostScsiInterface = hostScsiInterfaceList;
+         hostScsiInterface != NULL && !found;
+         hostScsiInterface = hostScsiInterface->_next) {
+        for (hostScsiTopologyTarget = hostScsiInterface->target;
+             hostScsiTopologyTarget != NULL;
+             hostScsiTopologyTarget = hostScsiTopologyTarget->_next) {
+            const esxVI_HostInternetScsiTargetTransport *candidate =
+                esxVI_HostInternetScsiTargetTransport_DynamicCast(
+                  hostScsiTopologyTarget->transport);
+
+            if (candidate) {
+                /* iterate hostScsiTopologyLun list to find matching key */
+                const esxVI_HostScsiTopologyLun *hostScsiTopologyLun =
+                                                hostScsiTopologyTarget->lun;
+                for (; hostScsiTopologyLun != NULL;
+                     hostScsiTopologyLun = hostScsiTopologyLun->_next) {
+                    if (STREQ(hostScsiTopologyLun->scsiLun, key)) {
+                        *poolName = strdup(candidate->iScsiName);
+
+                        if (*poolName == NULL) {
+                            virReportOOMError();
+                            goto cleanup;
+                        }
+                    }
+                }
+                /* hostScsiTopologyLun iteration done, terminate loop */
+                break;
+            }
+        }
+    }
+
+    result = 0;
+
+  cleanup:
+    esxVI_ObjectContent_Free(&hostSystem);
+    esxVI_String_Free(&propertyNameList);
+    esxVI_HostScsiTopologyInterface_Free(&hostScsiInterfaceList);
+
+    return result;
+}
+
+
 
 #include "esx_vi.generated.c"
diff --git a/src/esx/esx_vi.h b/src/esx/esx_vi.h
index d7895a0..8e56044 100644
--- a/src/esx/esx_vi.h
+++ b/src/esx/esx_vi.h
@@ -528,6 +528,24 @@ int esxVI_ParseHostCpuIdInfo(esxVI_ParsedHostCpuIdInfo *parsedHostCpuIdInfo,
 
 int esxVI_ProductVersionToDefaultVirtualHWVersion(esxVI_ProductVersion productVersion);
 
+int esxVI_LookupHostInternetScsiHbaStaticTargetByName(esxVI_Context *ctx,
+  const char *name, esxVI_HostInternetScsiHbaStaticTarget **ret,
+  esxVI_Occurrence occurrence);
+
+int esxVI_LookupHostInternetScsiHba(
+  esxVI_Context *ctx,
+  esxVI_HostInternetScsiHba **hostInternetScsiHba);
+
+int esxVI_LookupScsiLunList(esxVI_Context *ctx, esxVI_ScsiLun **ret);
+
+int esxVI_LookupHostScsiTopologyLunListByTargetName(
+  esxVI_Context *ctx, const char *name, esxVI_HostScsiTopologyLun **ret);
+
+int
+esxVI_LookupStoragePoolNameByScsiLunKey(esxVI_Context *ctx,
+                                        const char *key,
+                                        char **poolName);
+
 # include "esx_vi.generated.h"
 
 #endif /* __ESX_VI_H__ */
diff --git a/src/esx/esx_vi_generator.input b/src/esx/esx_vi_generator.input
index c4a3e56..21f5b10 100644
--- a/src/esx/esx_vi_generator.input
+++ b/src/esx/esx_vi_generator.input
@@ -58,6 +58,14 @@ enum AutoStartWaitHeartbeatSetting
 end
 
 
+enum FibreChannelPortType
+    fabric
+    loop
+    pointToPoint
+    unknown
+end
+
+
 enum ManagedEntityStatus
     gray
     green
@@ -128,6 +136,12 @@ enum VirtualMachinePowerState
 end
 
 
+enum vStorageSupport
+    vStorageUnknown
+end
+
+
+
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 # Objects
 #
@@ -262,6 +276,13 @@ object HostAutoStartManagerConfig
     AutoStartPowerInfo                       powerInfo                      ol
 end
 
+object HostBlockAdapterTargetTransport extends HostTargetTransport
+end
+
+
+object HostBlockHba extends HostHostBusAdapter
+end
+
 
 object HostConfigManager
     ManagedObjectReference                   cpuScheduler                   o
@@ -309,6 +330,31 @@ object HostDatastoreBrowserSearchSpec
     Boolean                                  sortFoldersFirst               o
 end
 
+object HostDevice
+    String                                   deviceName                     r
+    String                                   deviceType                     r
+end
+
+
+object HostDiskDimensionsLba
+    Int                                      blockSize                      r
+    Long                                     block                          r
+end
+
+
+object HostFibreChannelHba extends HostHostBusAdapter
+    Long                                     nodeWorldWideName              r
+    FibreChannelPortType                     portType                       r
+    Long                                     portWorldWideName              r
+    Long                                     speed                          r
+end
+
+
+object HostFibreChannelTargetTransport extends HostTargetTransport
+    Long                                     nodeWorldWideName              r
+    Long                                     portWorldWideName              r
+end
+
 
 object HostFileSystemVolume
     String                                   type                           r
@@ -323,6 +369,164 @@ object HostIpConfig
     String                                   subnetMask                     o
 end
 
+object HostHostBusAdapter
+    Int                                      bus                            r
+    String                                   device                         r
+    String                                   driver                         o
+    String                                   key                            o
+    String                                   model                          r
+    String                                   pci                            o
+    String                                   status                         r
+end
+
+
+object HostInternetScsiTargetTransport extends HostTargetTransport
+    String                                   iScsiName                      r
+    String                                   iScsiAlias                     r
+    String                                   address                        ol
+
+end
+
+
+object HostInternetScsiHba extends HostHostBusAdapter
+    HostInternetScsiHbaAuthenticationCapabilities   authenticationCapabilities  r
+    HostInternetScsiHbaAuthenticationProperties     authenticationProperties    r
+    HostInternetScsiHbaDiscoveryCapabilities        discoveryCapabilities       r
+    HostInternetScsiHbaDiscoveryProperties          discoveryProperties         r
+    HostInternetScsiHbaIPCapabilities               ipCapabilities              r
+    HostInternetScsiHbaIPProperties                 ipProperties                r
+    String                                          iScsiName                   r
+    Boolean                                         isSoftwareBased             r
+    HostInternetScsiHbaParamValue                   advancedOptions             ol
+    HostInternetScsiHbaSendTarget                   configuredSendTarget        ol
+    HostInternetScsiHbaStaticTarget                 configuredStaticTarget      ol
+    Int                                             currentSpeedMb              o
+    HostInternetScsiHbaDigestCapabilities           digestCapabilities          o
+    HostInternetScsiHbaDigestProperties             digestProperties            o
+    String                                          iScsiAlias                  o
+    Int                                             maxSpeedMb                  o
+    OptionDef                                       supportedAdvancedOptions    ol
+end
+
+
+
+object HostInternetScsiHbaAuthenticationCapabilities
+    Boolean                                  chapAuthSettable               r
+    Boolean                                  krb5AuthSettable               r
+    Boolean                                  spkmAuthSettable               r
+    Boolean                                  srpAuthSettable                r
+    Boolean                                  mutualChapSettable             o
+    Boolean                                  targetChapSettable             o
+    Boolean                                  targetMutualChapSettable       o
+end
+
+
+object HostInternetScsiHbaAuthenticationProperties
+    Boolean                                  chapAuthEnabled                r
+    String                                   chapAuthenticationType         o
+    Boolean                                  chapInherited                  o
+    String                                   chapName                       o
+    String                                   chapSecret                     o
+    String                                   mutualChapAuthenticationType   o
+    Boolean                                  mutualChapInherited            o
+    String                                   mutualChapName                 o
+    String                                   mutualChapSecret               o
+end
+
+
+object HostInternetScsiHbaDigestCapabilities
+    Boolean                                  dataDigestSettable             o
+    Boolean                                  headerDigestSettable           o
+    Boolean                                  targetDataDigestSettable       o
+    Boolean                                  targetHeaderDigestSettable     o
+end
+
+
+object HostInternetScsiHbaDigestProperties
+    Boolean                                  dataDigestInherited            o
+    String                                   dataDigestType                 o
+    Boolean                                  headerDigestInherited          o
+    String                                   headerDigestType               o
+end
+
+
+object HostInternetScsiHbaDiscoveryCapabilities
+    Boolean                                  iSnsDiscoverySettable          r
+    Boolean                                  sendTargetsDiscoverySettable   r
+    Boolean                                  slpDiscoverySettable           r
+    Boolean                                  staticTargetDiscoverySettable  r
+end
+
+
+object HostInternetScsiHbaDiscoveryProperties
+    Boolean                                  iSnsDiscoveryEnabled           r
+    Boolean                                  sendTargetsDiscoveryEnabled    r
+    Boolean                                  slpDiscoveryEnabled            r
+    Boolean                                  staticTargetDiscoveryEnabled   r
+    String                                   iSnsDiscoveryMethod            o
+    String                                   iSnsHost                       o
+    String                                   slpDiscoveryMethod             o
+    String                                   slpHost                        o
+end
+
+object HostInternetScsiHbaIPCapabilities
+    Boolean                                         addressSettable             r
+    Boolean                                         alternateDnsServerAddressSettable   r
+    Boolean                                         defaultGatewaySettable              r
+    Boolean                                         ipConfigurationMethodSettable       r
+    Boolean                                         primaryDnsServerAddressSettable     r
+    Boolean                                         subnetMaskSettable                  r
+    Boolean                                         arpRedirectSettable                 o
+    Boolean                                         hostNameAsTargetAddress             o
+    Boolean                                         ipv6Supported                       o
+    Boolean                                         mtuSettable                         o
+    Boolean                                         nameAliasSettable                   o
+end
+
+
+object HostInternetScsiHbaIPProperties
+    Boolean                                         dhcpConfigurationEnabled    r
+    String                                          address                     o
+    String                                          alternateDnsServerAddress   o
+    Boolean                                         arpRedirectEnabled          o
+    String                                          defaultGateway              o
+    String                                          ipv6Address                 o
+    String                                          ipv6DefaultGateway          o
+    Boolean                                         jumboFramesEnabled          o
+    String                                          mac                         o
+    Int                                             mtu                         o
+    String                                          primaryDnsServerAddress     o
+    String                                          subnetMask                  o
+end
+
+
+object HostInternetScsiHbaParamValue extends OptionValue
+    Boolean                                  isInherited                    o
+end
+
+
+object HostInternetScsiHbaSendTarget
+    String                                   address                        r
+    HostInternetScsiHbaParamValue            advancedOptions                ol
+    HostInternetScsiHbaAuthenticationProperties  authenticationProperties   o
+    HostInternetScsiHbaDigestProperties      digestProperties               o
+    String                                   parent                         o
+    Int                                      port                           o
+    OptionDef                                supportedAdvancedOptions       ol
+end
+
+
+object HostInternetScsiHbaStaticTarget
+    String                                   address                        r
+    String                                   iScsiName                      r
+    HostInternetScsiHbaParamValue            advancedOptions                ol
+    HostInternetScsiHbaAuthenticationProperties  authenticationProperties   o
+    HostInternetScsiHbaDigestProperties      digestProperties               o
+    String                                   parent                         o
+    Int                                      port                           o
+    OptionDef                                supportedAdvancedOptions       ol
+end
+
 
 object HostMountInfo
     String                                   path                           o
@@ -418,12 +622,55 @@ object HostPortGroupSpec
     HostNetworkPolicy                        policy                         r
 end
 
+object HostParallelScsiHba extends HostHostBusAdapter
+end
+
+
+object HostParallelScsiTargetTransport extends HostTargetTransport
+end
+
+
+object HostScsiDisk extends ScsiLun
+    HostDiskDimensionsLba                    capacity                       r
+    String                                   devicePath                     r
+end
+
 
 object HostScsiDiskPartition
     String                                   diskName                       r
     Int                                      partition                      r
 end
 
+object HostScsiTopology
+    HostScsiTopologyInterface                adapater                       ol
+end
+
+
+object HostScsiTopologyInterface
+    String                                   adapter                        r
+    String                                   key                            r
+    HostScsiTopologyTarget                   target                         ol
+end
+
+
+object HostScsiTopologyLun
+    String                                   key                            r
+    Int                                      lun                            r
+    String                                   scsiLun                        r
+end
+
+
+object HostScsiTopologyTarget
+    String                                   key                            r
+    Int                                      target                         r
+    HostScsiTopologyLun                      lun                            ol
+    HostTargetTransport                      transport                      o
+end
+
+
+object HostTargetTransport
+end
+
 
 object HostVirtualSwitch
     String                                   name                           r
@@ -526,12 +773,22 @@ object ObjectUpdate
     MissingProperty                          missingSet                     i
 end
 
+object OptionDef extends ElementDescription
+    OptionType                               optionType                     r
+end
+
 
 object OptionType
     Boolean                                  valueIsReadonly                o
 end
 
 
+object OptionValue
+    String                                   key                            r
+    AnyType                                  value                          r
+end
+
+
 object PerfCounterInfo
     Int                                      key                            r
     ElementDescription                       nameInfo                       r
@@ -664,6 +921,45 @@ object SelectionSpec
 end
 
 
+object ScsiLun extends HostDevice
+    String                                   lunType                        r
+    String                                   operationalState               rl
+    String                                   uuid                           r
+    ScsiLunDurableName                       alternateName                  ol
+    String                                   canonicalName                  o
+    ScsiLunCapabilities                      capabilities                   o
+    ScsiLunDescriptor                        descriptor                     ol
+    String                                   displayName                    o
+    ScsiLunDurableName                       durableName                    o
+    String                                   key                            o
+    String                                   model                          o
+    Int                                      queueDepth                     o
+    String                                   revision                       o
+    Int                                      scsiLevel                      o
+    String                                   serialNumber                   o
+    Byte                                     standardInquiry                ol
+    String                                   vendor                         o
+end
+
+
+object ScsiLunCapabilities
+    Boolean                                  updateDisplayNameSupported     r
+end
+
+
+object ScsiLunDescriptor
+    String                                   id                             r
+    String                                   quality                        r
+end
+
+
+object ScsiLunDurableName
+    String                                   namespace                      r
+    Byte                                     namespaceId                    r
+    Byte                                     data                           ol
+end
+
+
 object ServiceContent
     ManagedObjectReference                   rootFolder                     r
     ManagedObjectReference                   propertyCollector              r
@@ -1138,6 +1434,12 @@ method RemoveVirtualSwitch
 end
 
 
+method RescanHba
+   ManagedObjectReference                    _this                          r
+   String                                    hbaDevice                      r
+end
+
+
 method RetrieveProperties            returns ObjectContent                  ol
     ManagedObjectReference                   _this:propertyCollector        r
     PropertyFilterSpec                       specSet                        rl
diff --git a/src/esx/esx_vi_generator.py b/src/esx/esx_vi_generator.py
index 2883ac0..af4e7e8 100755
--- a/src/esx/esx_vi_generator.py
+++ b/src/esx/esx_vi_generator.py
@@ -1532,6 +1532,21 @@ additional_object_features = { "AutoStartDefaults"          : Object.FEATURE__AN
                                                               Object.FEATURE__ANY_TYPE,
                                "HostDatastoreBrowserSearchResults" : Object.FEATURE__LIST |
                                                               Object.FEATURE__ANY_TYPE,
+                               "HostHostBusAdapter"         : Object.FEATURE__LIST |
+                                                              Object.FEATURE__ANY_TYPE,
+                               "HostInternetScsiHba"        : Object.FEATURE__DYNAMIC_CAST |
+                                                              Object.FEATURE__DEEP_COPY,
+                               "HostInternetScsiTargetTransport"  : Object.FEATURE__DYNAMIC_CAST,
+                               "HostScsiDisk"               : Object.FEATURE__LIST |
+                                                              Object.FEATURE__ANY_TYPE |
+                                                              Object.FEATURE__DYNAMIC_CAST,
+                               "HostScsiTopologyInterface"  : Object.FEATURE__LIST |
+                                                              Object.FEATURE__ANY_TYPE,
+                               "HostScsiTopologyLun"        : Object.FEATURE__ANY_TYPE |
+                                                              Object.FEATURE__LIST |
+                                                              Object.FEATURE__DEEP_COPY,
+                               "HostScsiTopologyTarget"     : Object.FEATURE__ANY_TYPE |
+                                                              Object.FEATURE__LIST,
                                "HostPortGroup"              : Object.FEATURE__LIST |
                                                               Object.FEATURE__ANY_TYPE,
                                "HostVirtualSwitch"          : Object.FEATURE__DEEP_COPY |
@@ -1543,6 +1558,10 @@ additional_object_features = { "AutoStartDefaults"          : Object.FEATURE__AN
                                                               Object.FEATURE__LIST |
                                                               Object.FEATURE__ANY_TYPE,
                                "ResourcePoolResourceUsage"  : Object.FEATURE__ANY_TYPE,
+                               "ScsiLun"                    : Object.FEATURE__LIST |
+                                                              Object.FEATURE__ANY_TYPE |
+                                                              Object.FEATURE__DEEP_COPY,
+                               "ScsiLunDurableName"         : Object.FEATURE__LIST,
                                "ServiceContent"             : Object.FEATURE__DESERIALIZE,
                                "SharesInfo"                 : Object.FEATURE__ANY_TYPE,
                                "TaskInfo"                   : Object.FEATURE__LIST |
-- 
1.7.9.5


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