[libvirt] [PATCH v2 2/3] storage: Introduce iscsi_direct pool type
clem at lse.epita.fr
clem at lse.epita.fr
Mon Jul 23 18:43:00 UTC 2018
From: Clementine Hayat <clem at lse.epita.fr>
Introducing the pool as a noop. Integration inside the build
system. Implementation will be in the following commits.
Signed-off-by: Clementine Hayat <clem at lse.epita.fr>
---
configure.ac | 6 ++-
m4/virt-storage-iscsi-direct.m4 | 41 +++++++++++++++
src/conf/domain_conf.c | 4 ++
src/conf/storage_conf.c | 33 ++++++++++--
src/conf/storage_conf.h | 1 +
src/conf/virstorageobj.c | 2 +
src/storage/Makefile.inc.am | 22 ++++++++
src/storage/storage_backend.c | 6 +++
src/storage/storage_backend_iscsi_direct.c | 58 ++++++++++++++++++++++
src/storage/storage_backend_iscsi_direct.h | 6 +++
src/storage/storage_driver.c | 1 +
tools/virsh-pool.c | 3 ++
12 files changed, 178 insertions(+), 5 deletions(-)
create mode 100644 m4/virt-storage-iscsi-direct.m4
create mode 100644 src/storage/storage_backend_iscsi_direct.c
create mode 100644 src/storage/storage_backend_iscsi_direct.h
diff --git a/configure.ac b/configure.ac
index c668630a79..87ac4dc2c3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -564,6 +564,7 @@ LIBVIRT_STORAGE_ARG_DIR
LIBVIRT_STORAGE_ARG_FS
LIBVIRT_STORAGE_ARG_LVM
LIBVIRT_STORAGE_ARG_ISCSI
+LIBVIRT_STORAGE_ARG_ISCSI_DIRECT
LIBVIRT_STORAGE_ARG_SCSI
LIBVIRT_STORAGE_ARG_MPATH
LIBVIRT_STORAGE_ARG_DISK
@@ -578,6 +579,7 @@ if test "$with_libvirtd" = "no"; then
with_storage_fs=no
with_storage_lvm=no
with_storage_iscsi=no
+ with_storage_iscsi_direct=no
with_storage_scsi=no
with_storage_mpath=no
with_storage_disk=no
@@ -598,6 +600,7 @@ LIBVIRT_STORAGE_CHECK_DIR
LIBVIRT_STORAGE_CHECK_FS
LIBVIRT_STORAGE_CHECK_LVM
LIBVIRT_STORAGE_CHECK_ISCSI
+LIBVIRT_STORAGE_CHECK_ISCSI_DIRECT
LIBVIRT_STORAGE_CHECK_SCSI
LIBVIRT_STORAGE_CHECK_MPATH
LIBVIRT_STORAGE_CHECK_DISK
@@ -608,7 +611,7 @@ LIBVIRT_STORAGE_CHECK_ZFS
LIBVIRT_STORAGE_CHECK_VSTORAGE
with_storage=no
-for backend in dir fs lvm iscsi scsi mpath rbd disk; do
+for backend in dir fs lvm iscsi iscsi_direct scsi mpath rbd disk; do
if eval test \$with_storage_$backend = yes; then
with_storage=yes
break
@@ -936,6 +939,7 @@ LIBVIRT_STORAGE_RESULT_DIR
LIBVIRT_STORAGE_RESULT_FS
LIBVIRT_STORAGE_RESULT_LVM
LIBVIRT_STORAGE_RESULT_ISCSI
+LIBVIRT_STORAGE_RESULT_ISCSI_DIRECT
LIBVIRT_STORAGE_RESULT_SCSI
LIBVIRT_STORAGE_RESULT_MPATH
LIBVIRT_STORAGE_RESULT_DISK
diff --git a/m4/virt-storage-iscsi-direct.m4 b/m4/virt-storage-iscsi-direct.m4
new file mode 100644
index 0000000000..cc2d490352
--- /dev/null
+++ b/m4/virt-storage-iscsi-direct.m4
@@ -0,0 +1,41 @@
+dnl Iscsi-direct storage
+dnl
+dnl Copyright (C) 2018 Clementine Hayat.
+dnl
+dnl This library is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU Lesser General Public
+dnl License as published by the Free Software Foundation; either
+dnl version 2.1 of the License, or (at your option) any later version.
+dnl
+dnl This library is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+dnl Lesser General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU Lesser General Public
+dnl License along with this library. If not, see
+dnl <http://www.gnu.org/licenses/>.
+dnl
+
+AC_DEFUN([LIBVIRT_STORAGE_ARG_ISCSI_DIRECT], [
+ LIBVIRT_ARG_WITH_FEATURE([STORAGE_ISCSI_DIRECT],
+ [iscsi-direct backend for the storage driver],
+ [check])
+])
+
+AC_DEFUN([LIBVIRT_STORAGE_CHECK_ISCSI_DIRECT], [
+ AC_REQUIRE([LIBVIRT_CHECK_LIBISCSI])
+ if test "$with_storage_iscsi_direct" = "check"; then
+ with_storage_iscsi_direct=$with_libiscsi
+ fi
+ if test "$with_storage_iscsi_direct" = "yes"; then
+ AC_DEFINE_UNQUOTED([WITH_STORAGE_ISCSI_DIRECT], [1],
+ [whether iSCSI backend for storage driver is enabled])
+ fi
+ AM_CONDITIONAL([WITH_STORAGE_ISCSI_DIRECT],
+ [test "$with_storage_iscsi_direct" = "yes"])
+])
+
+AC_DEFUN([LIBVIRT_STORAGE_RESULT_ISCSI_DIRECT], [
+ LIBVIRT_RESULT([iscsi-direct], [$with_storage_iscsi_direct])
+])
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 7396616eda..5af27a6ad2 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -30163,6 +30163,10 @@ virDomainDiskTranslateSourcePool(virDomainDiskDefPtr def)
break;
+ case VIR_STORAGE_POOL_ISCSI_DIRECT:
+ def->src->srcpool->mode = VIR_STORAGE_SOURCE_POOL_MODE_DIRECT;
+ break;
+
case VIR_STORAGE_POOL_ISCSI:
if (def->startupPolicy) {
virReportError(VIR_ERR_XML_ERROR, "%s",
diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index 5036ab9ef8..ee1586410b 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -62,9 +62,9 @@ VIR_ENUM_IMPL(virStoragePool,
VIR_STORAGE_POOL_LAST,
"dir", "fs", "netfs",
"logical", "disk", "iscsi",
- "scsi", "mpath", "rbd",
- "sheepdog", "gluster", "zfs",
- "vstorage")
+ "iscsi-direct", "scsi", "mpath",
+ "rbd", "sheepdog", "gluster",
+ "zfs", "vstorage")
VIR_ENUM_IMPL(virStoragePoolFormatFileSystem,
VIR_STORAGE_POOL_FS_LAST,
@@ -207,6 +207,17 @@ static virStoragePoolTypeInfo poolTypeInfo[] = {
.formatToString = virStoragePoolFormatDiskTypeToString,
}
},
+ {.poolType = VIR_STORAGE_POOL_ISCSI_DIRECT,
+ .poolOptions = {
+ .flags = (VIR_STORAGE_POOL_SOURCE_HOST |
+ VIR_STORAGE_POOL_SOURCE_DEVICE |
+ VIR_STORAGE_POOL_SOURCE_NETWORK |
+ VIR_STORAGE_POOL_SOURCE_INITIATOR_IQN),
+ },
+ .volOptions = {
+ .formatToString = virStoragePoolFormatDiskTypeToString,
+ }
+ },
{.poolType = VIR_STORAGE_POOL_SCSI,
.poolOptions = {
.flags = (VIR_STORAGE_POOL_SOURCE_ADAPTER),
@@ -803,6 +814,19 @@ virStoragePoolDefParseXML(xmlXPathContextPtr ctxt)
goto error;
}
+ if (ret->type == VIR_STORAGE_POOL_ISCSI_DIRECT) {
+ if (!ret->source.initiator.iqn) {
+ virReportError(VIR_ERR_XML_ERROR, "%s",
+ _("missing storage pool initiator iqn"));
+ goto error;
+ }
+ if (!ret->source.ndevice) {
+ virReportError(VIR_ERR_XML_ERROR, "%s",
+ _("missing storage pool device path"));
+ goto error;
+ }
+ }
+
cleanup:
VIR_FREE(uuid);
VIR_FREE(type);
@@ -1004,7 +1028,8 @@ virStoragePoolDefFormatBuf(virBufferPtr buf,
* files, so they don't have a target */
if (def->type != VIR_STORAGE_POOL_RBD &&
def->type != VIR_STORAGE_POOL_SHEEPDOG &&
- def->type != VIR_STORAGE_POOL_GLUSTER) {
+ def->type != VIR_STORAGE_POOL_GLUSTER &&
+ def->type != VIR_STORAGE_POOL_ISCSI_DIRECT) {
virBufferAddLit(buf, "<target>\n");
virBufferAdjustIndent(buf, 2);
diff --git a/src/conf/storage_conf.h b/src/conf/storage_conf.h
index 15dfd8becf..858623783d 100644
--- a/src/conf/storage_conf.h
+++ b/src/conf/storage_conf.h
@@ -85,6 +85,7 @@ typedef enum {
VIR_STORAGE_POOL_LOGICAL, /* Logical volume groups / volumes */
VIR_STORAGE_POOL_DISK, /* Disk partitions */
VIR_STORAGE_POOL_ISCSI, /* iSCSI targets */
+ VIR_STORAGE_POOL_ISCSI_DIRECT, /* iSCSI targets using libiscsi */
VIR_STORAGE_POOL_SCSI, /* SCSI HBA */
VIR_STORAGE_POOL_MPATH, /* Multipath devices */
VIR_STORAGE_POOL_RBD, /* RADOS Block Device */
diff --git a/src/conf/virstorageobj.c b/src/conf/virstorageobj.c
index e66b2ebfb2..1c45bb71b9 100644
--- a/src/conf/virstorageobj.c
+++ b/src/conf/virstorageobj.c
@@ -1838,11 +1838,13 @@ virStoragePoolObjSourceFindDuplicateCb(const void *payload,
break;
case VIR_STORAGE_POOL_ISCSI:
+ case VIR_STORAGE_POOL_ISCSI_DIRECT:
case VIR_STORAGE_POOL_FS:
case VIR_STORAGE_POOL_LOGICAL:
case VIR_STORAGE_POOL_DISK:
case VIR_STORAGE_POOL_ZFS:
if ((data->def->type == VIR_STORAGE_POOL_ISCSI ||
+ data->def->type == VIR_STORAGE_POOL_ISCSI_DIRECT ||
data->def->type == VIR_STORAGE_POOL_FS ||
data->def->type == VIR_STORAGE_POOL_LOGICAL ||
data->def->type == VIR_STORAGE_POOL_DISK ||
diff --git a/src/storage/Makefile.inc.am b/src/storage/Makefile.inc.am
index ea98c0ee52..b2714fd960 100644
--- a/src/storage/Makefile.inc.am
+++ b/src/storage/Makefile.inc.am
@@ -31,6 +31,11 @@ STORAGE_DRIVER_ISCSI_SOURCES = \
storage/storage_backend_iscsi.c \
$(NULL)
+STORAGE_DRIVER_ISCSI_DIRECT_SOURCES = \
+ storage/storage_backend_iscsi_direct.h \
+ storage/storage_backend_iscsi_direct.c \
+ $(NULL)
+
STORAGE_DRIVER_SCSI_SOURCES = \
storage/storage_backend_scsi.h \
storage/storage_backend_scsi.c \
@@ -89,6 +94,7 @@ EXTRA_DIST += \
$(STORAGE_FILE_FS_SOURCES) \
$(STORAGE_DRIVER_LVM_SOURCES) \
$(STORAGE_DRIVER_ISCSI_SOURCES) \
+ $(STORAGE_DRIVER_ISCSI_DIRECT_SOURCES) \
$(STORAGE_DRIVER_SCSI_SOURCES) \
$(STORAGE_DRIVER_MPATH_SOURCES) \
$(STORAGE_DRIVER_DISK_SOURCES) \
@@ -193,6 +199,22 @@ libvirt_storage_backend_iscsi_la_LIBADD = \
$(NULL)
endif WITH_STORAGE_ISCSI
+if WITH_STORAGE_ISCSI_DIRECT
+libvirt_storage_backend_iscsi_direct_la_SOURCES = $(STORAGE_DRIVER_ISCSI_DIRECT_SOURCES)
+libvirt_storage_backend_iscsi_direct_la_CFLAGS = \
+ -I$(srcdir)/conf \
+ $(LIBISCSI_CFLAGS) \
+ $(AM_CFLAGS) \
+ $(NULL)
+
+storagebackend_LTLIBRARIES += libvirt_storage_backend_iscsi-direct.la
+libvirt_storage_backend_iscsi_direct_la_LDFLAGS = $(AM_LDFLAGS_MOD)
+libvirt_storage_backend_iscsi_direct_la_LIBADD = \
+ libvirt.la \
+ ../gnulib/lib/libgnu.la \
+ $(NULL)
+endif WITH_STORAGE_ISCSI_DIRECT
+
if WITH_STORAGE_SCSI
libvirt_storage_backend_scsi_la_SOURCES = $(STORAGE_DRIVER_SCSI_SOURCES)
libvirt_storage_backend_scsi_la_CFLAGS = \
diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c
index 7d226f3d3a..e7fbc37eb1 100644
--- a/src/storage/storage_backend.c
+++ b/src/storage/storage_backend.c
@@ -43,6 +43,9 @@
#if WITH_STORAGE_ISCSI
# include "storage_backend_iscsi.h"
#endif
+#if WITH_STORAGE_ISCSI_DIRECT
+# include "storage_backend_iscsi_direct.h"
+#endif
#if WITH_STORAGE_SCSI
# include "storage_backend_scsi.h"
#endif
@@ -122,6 +125,9 @@ virStorageBackendDriversRegister(bool allbackends ATTRIBUTE_UNUSED)
#if WITH_STORAGE_ISCSI
VIR_STORAGE_BACKEND_REGISTER(virStorageBackendISCSIRegister, "iscsi");
#endif
+#if WITH_STORAGE_ISCSI_DIRECT
+ VIR_STORAGE_BACKEND_REGISTER(virStorageBackendISCSIDirectRegister, "iscsi-direct");
+#endif
#if WITH_STORAGE_SCSI
VIR_STORAGE_BACKEND_REGISTER(virStorageBackendSCSIRegister, "scsi");
#endif
diff --git a/src/storage/storage_backend_iscsi_direct.c b/src/storage/storage_backend_iscsi_direct.c
new file mode 100644
index 0000000000..94c4c989ff
--- /dev/null
+++ b/src/storage/storage_backend_iscsi_direct.c
@@ -0,0 +1,58 @@
+/*
+ * storage_backend_iscsi_direct.c: storage backend for iSCSI using libiscsi
+ *
+ * Copyright (C) 2018 Clementine Hayat.
+ *
+ * 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/>.
+ *
+ * Author: Clementine Hayat <clem at lse.epita.fr>
+ */
+
+#include <config.h>
+
+#include "storage_backend_iscsi_direct.h"
+#include "storage_util.h"
+#include "virlog.h"
+
+#define VIR_FROM_THIS VIR_FROM_STORAGE
+
+VIR_LOG_INIT("storage.storage_backend_iscsi_direct");
+
+
+static int
+virStorageBackendISCSIDirectCheckPool(virStoragePoolObjPtr pool ATTRIBUTE_UNUSED,
+ bool *isActive ATTRIBUTE_UNUSED)
+{
+ return 0;
+}
+
+static int
+virStorageBackendISCSIDirectRefreshPool(virStoragePoolObjPtr pool ATTRIBUTE_UNUSED)
+{
+ return 0;
+}
+
+virStorageBackend virStorageBackendISCSIDirect = {
+ .type = VIR_STORAGE_POOL_ISCSI_DIRECT,
+
+ .checkPool = virStorageBackendISCSIDirectCheckPool,
+ .refreshPool = virStorageBackendISCSIDirectRefreshPool,
+};
+
+int
+virStorageBackendISCSIDirectRegister(void)
+{
+ return virStorageBackendRegister(&virStorageBackendISCSIDirect);
+}
diff --git a/src/storage/storage_backend_iscsi_direct.h b/src/storage/storage_backend_iscsi_direct.h
new file mode 100644
index 0000000000..545579daf7
--- /dev/null
+++ b/src/storage/storage_backend_iscsi_direct.h
@@ -0,0 +1,6 @@
+#ifndef __VIR_STORAGE_BACKEND_ISCSI_H__
+# define __VIR_STORAGE_BACKEND_ISCSI_H__
+
+int virStorageBackendISCSIDirectRegister(void);
+
+#endif /* __VIR_STORAGE_BACKEND_ISCSI_H__ */
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index 8070d159ea..c108f026ce 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -1566,6 +1566,7 @@ storageVolLookupByPathCallback(virStoragePoolObjPtr obj,
case VIR_STORAGE_POOL_LOGICAL:
case VIR_STORAGE_POOL_DISK:
case VIR_STORAGE_POOL_ISCSI:
+ case VIR_STORAGE_POOL_ISCSI_DIRECT:
case VIR_STORAGE_POOL_SCSI:
case VIR_STORAGE_POOL_MPATH:
case VIR_STORAGE_POOL_VSTORAGE:
diff --git a/tools/virsh-pool.c b/tools/virsh-pool.c
index cc49a5b96d..4604b05020 100644
--- a/tools/virsh-pool.c
+++ b/tools/virsh-pool.c
@@ -1203,6 +1203,9 @@ cmdPoolList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
case VIR_STORAGE_POOL_ISCSI:
flags |= VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI;
break;
+ case VIR_STORAGE_POOL_ISCSI_DIRECT:
+ flags |= VIR_CONNECT_LIST_STORAGE_POOLS_ISCSI;
+ break;
case VIR_STORAGE_POOL_SCSI:
flags |= VIR_CONNECT_LIST_STORAGE_POOLS_SCSI;
break;
--
2.18.0
More information about the libvir-list
mailing list