Rename iolimit to blockio.

After discussion with DB we decided to rename the new iolimit
element as it creates the impression it would be there to
limit (i.e. throttle) I/O instead of specifying immutable
characteristics of a block device.
This is also backed by the fact that the term I/O Limits has
vanished from newer storage admin documentation.

Signed-off-by: Viktor Mihajlovski <mihajlov@linux.vnet.ibm.com>

docs/formatdomain.html.in

@@ -1288,7 +1288,7 @@
       <driver name='qemu' type='raw'/>
       <source dev='/dev/sda'/>
       <geometry cyls='16383' heads='16' secs='63' trans='lba'/>
-      <iolimits logical_block_size='512' physical_block_size='4096'/>
+      <blockio logical_block_size='512' physical_block_size='4096'/>
       <target dev='hda' bus='ide'/>
     </disk>
   </devices>
@@ -1657,8 +1657,8 @@
             BIOS-Translation-Modus (none, lba or auto)</dd>
         </dl>
       </dd>
-      <dt><code>iolimits</code></dt>
+      <dt><code>blockio</code></dt>
-      <dd>If present, the <code>iolimits</code> element allows
+      <dd>If present, the <code>blockio</code> element allows
         to override any of the block device properties listed below.
         <span class="since">Since 0.10.2 (QEMU and KVM)</span>
         <dl>

docs/schemas/domaincommon.rng

@@ -890,7 +890,7 @@
         <ref name="geometry"/>
       </optional>
       <optional>
-        <ref name="diskIoLimits"/>
+        <ref name="diskBlockIo"/>
       </optional>
     </interleave>
   </define>
@@ -1116,8 +1116,8 @@
       </optional>
     </element>
   </define>
-  <define name="diskIoLimits">
+  <define name="diskBlockIo">
-    <element name="iolimits">
+    <element name="blockio">
       <optional>
         <attribute name="logical_block_size">
           <data type="integer"/>

src/conf/domain_conf.c

@@ -3439,8 +3439,8 @@ virDomainDiskDefParseXML(virCapsPtr caps,
     def->geometry.sectors = 0;
     def->geometry.trans = VIR_DOMAIN_DISK_TRANS_DEFAULT;
 
-    def->iolimits.logical_block_size = 0;
+    def->blockio.logical_block_size = 0;
-    def->iolimits.physical_block_size = 0;
+    def->blockio.physical_block_size = 0;
 
     ctxt->node = node;
 
@@ -3580,12 +3580,12 @@ virDomainDiskDefParseXML(virCapsPtr caps,
                         goto error;
                     }
                 }
-            } else if (xmlStrEqual(cur->name, BAD_CAST "iolimits")) {
+            } else if (xmlStrEqual(cur->name, BAD_CAST "blockio")) {
                 logical_block_size =
                     virXMLPropString(cur, "logical_block_size");
                 if (logical_block_size &&
                     virStrToLong_ui(logical_block_size, NULL, 0,
-                                    &def->iolimits.logical_block_size) < 0) {
+                                    &def->blockio.logical_block_size) < 0) {
                     virReportError(VIR_ERR_INTERNAL_ERROR,
                                    _("invalid logical block size '%s'"),
                                    logical_block_size);
@@ -3595,7 +3595,7 @@ virDomainDiskDefParseXML(virCapsPtr caps,
                     virXMLPropString(cur, "physical_block_size");
                 if (physical_block_size &&
                     virStrToLong_ui(physical_block_size, NULL, 0,
-                                    &def->iolimits.physical_block_size) < 0) {
+                                    &def->blockio.physical_block_size) < 0) {
                     virReportError(VIR_ERR_INTERNAL_ERROR,
                                    _("invalid physical block size '%s'"),
                                    physical_block_size);
@@ -11406,21 +11406,21 @@ static void virDomainDiskGeometryDefFormat(virBufferPtr buf,
         virBufferAddLit(buf, "/>\n");
     }
 }
-static void virDomainDiskIolimitsDefFormat(virBufferPtr buf,
+static void virDomainDiskBlockIoDefFormat(virBufferPtr buf,
                                           virDomainDiskDefPtr def)
 {
-    if (def->iolimits.logical_block_size > 0 ||
+    if (def->blockio.logical_block_size > 0 ||
-        def->iolimits.physical_block_size > 0) {
+        def->blockio.physical_block_size > 0) {
-        virBufferAddLit(buf,"      <iolimits");
+        virBufferAddLit(buf,"      <blockio");
-        if (def->iolimits.logical_block_size > 0) {
+        if (def->blockio.logical_block_size > 0) {
             virBufferAsprintf(buf,
                               " logical_block_size='%u'",
-                              def->iolimits.logical_block_size);
+                              def->blockio.logical_block_size);
         }
-        if (def->iolimits.physical_block_size > 0) {
+        if (def->blockio.physical_block_size > 0) {
             virBufferAsprintf(buf,
                               " physical_block_size='%u'",
-                              def->iolimits.physical_block_size);
+                              def->blockio.physical_block_size);
         }
         virBufferAddLit(buf, "/>\n");
     }
@@ -11599,7 +11599,7 @@ virDomainDiskDefFormat(virBufferPtr buf,
     }
 
     virDomainDiskGeometryDefFormat(buf, def);
-    virDomainDiskIolimitsDefFormat(buf, def);
+    virDomainDiskBlockIoDefFormat(buf, def);
 
     /* For now, mirroring is currently output-only: we only output it
      * for live domains, therefore we ignore it on input except for

src/conf/domain_conf.h

@@ -572,7 +572,7 @@ struct _virDomainDiskDef {
     struct {
         unsigned int logical_block_size;
         unsigned int physical_block_size;
-    } iolimits;
+    } blockio;
 
     virDomainBlockIoTuneInfo blkdeviotune;
 

src/qemu/qemu_capabilities.c

@@ -172,7 +172,7 @@ VIR_ENUM_IMPL(qemuCaps, QEMU_CAPS_LAST,
               "bridge", /* 100 */
               "lsi",
               "virtio-scsi-pci",
-              "iolimits",
+              "blockio",
               "disable-s3",
 
               "disable-s4", /* 105 */
@@ -1512,7 +1512,7 @@ qemuCapsParseDeviceStr(const char *str, virBitmapPtr flags)
      */
     if (strstr(str, ".logical_block_size") &&
         strstr(str, ".physical_block_size"))
-        qemuCapsSet(flags, QEMU_CAPS_IOLIMITS);
+        qemuCapsSet(flags, QEMU_CAPS_BLOCKIO);
     if (strstr(str, "PIIX4_PM.disable_s3="))
         qemuCapsSet(flags, QEMU_CAPS_DISABLE_S3);
     if (strstr(str, "PIIX4_PM.disable_s4="))

src/qemu/qemu_capabilities.h

@@ -138,7 +138,7 @@ enum qemuCapsFlags {
     QEMU_CAPS_NETDEV_BRIDGE      = 100, /* bridge helper support */
     QEMU_CAPS_SCSI_LSI           = 101, /* -device lsi */
     QEMU_CAPS_VIRTIO_SCSI_PCI    = 102, /* -device virtio-scsi-pci */
-    QEMU_CAPS_IOLIMITS           = 103, /* -device ...logical_block_size & co */
+    QEMU_CAPS_BLOCKIO            = 103, /* -device ...logical_block_size & co */
     QEMU_CAPS_DISABLE_S3         = 104, /* S3 BIOS Advertisement on/off */
     QEMU_CAPS_DISABLE_S4         = 105, /* S4 BIOS Advertisement on/off */
 

src/qemu/qemu_command.c

@@ -2637,13 +2637,13 @@ qemuBuildDriveDevStr(virDomainDefPtr def,
     virBufferAsprintf(&opt, ",id=%s", disk->info.alias);
     if (bootindex && qemuCapsGet(qemuCaps, QEMU_CAPS_BOOTINDEX))
         virBufferAsprintf(&opt, ",bootindex=%d", bootindex);
-    if (qemuCapsGet(qemuCaps, QEMU_CAPS_IOLIMITS)) {
+    if (qemuCapsGet(qemuCaps, QEMU_CAPS_BLOCKIO)) {
-        if (disk->iolimits.logical_block_size > 0)
+        if (disk->blockio.logical_block_size > 0)
             virBufferAsprintf(&opt, ",logical_block_size=%u",
-                              disk->iolimits.logical_block_size);
+                              disk->blockio.logical_block_size);
-        if (disk->iolimits.physical_block_size > 0)
+        if (disk->blockio.physical_block_size > 0)
             virBufferAsprintf(&opt, ",physical_block_size=%u",
-                              disk->iolimits.physical_block_size);
+                              disk->blockio.physical_block_size);
     }
 
     if (virBufferError(&opt)) {

tests/qemuhelptest.c

@@ -541,7 +541,7 @@ mymain(void)
             QEMU_CAPS_VIRTIO_BLK_SCSI,
             QEMU_CAPS_VIRTIO_BLK_SG_IO,
             QEMU_CAPS_CPU_HOST,
-            QEMU_CAPS_IOLIMITS);
+            QEMU_CAPS_BLOCKIO);
     DO_TEST("qemu-kvm-0.12.1.2-rhel62-beta", 12001, 1, 0,
             QEMU_CAPS_VNC_COLON,
             QEMU_CAPS_NO_REBOOT,
@@ -609,7 +609,7 @@ mymain(void)
             QEMU_CAPS_DRIVE_COPY_ON_READ,
             QEMU_CAPS_CPU_HOST,
             QEMU_CAPS_SCSI_CD,
-            QEMU_CAPS_IOLIMITS);
+            QEMU_CAPS_BLOCKIO);
     DO_TEST("qemu-1.0", 1000000, 0, 0,
             QEMU_CAPS_VNC_COLON,
             QEMU_CAPS_NO_REBOOT,
@@ -682,7 +682,7 @@ mymain(void)
             QEMU_CAPS_SCSI_CD,
             QEMU_CAPS_IDE_CD,
             QEMU_CAPS_SCSI_LSI,
-            QEMU_CAPS_IOLIMITS);
+            QEMU_CAPS_BLOCKIO);
     DO_TEST("qemu-1.1.0", 1001000, 0, 0,
             QEMU_CAPS_VNC_COLON,
             QEMU_CAPS_NO_REBOOT,
@@ -763,7 +763,7 @@ mymain(void)
             QEMU_CAPS_NETDEV_BRIDGE,
             QEMU_CAPS_SCSI_LSI,
             QEMU_CAPS_VIRTIO_SCSI_PCI,
-            QEMU_CAPS_IOLIMITS);
+            QEMU_CAPS_BLOCKIO);
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }

tests/qemuxml2argvdata/qemuxml2argv-disk-blockio.xml

@@ -23,7 +23,7 @@
       <source file='/tmp/idedisk.img'/>
       <target dev='hdc' bus='ide'/>
       <address type='drive' controller='0' bus='0' target='0' unit='2'/>
-      <iolimits logical_block_size='512' physical_block_size='512'/>
+      <blockio logical_block_size='512' physical_block_size='512'/>
     </disk>
     <controller type='usb' index='0'/>
     <controller type='ide' index='0'/>

tests/qemuxml2argvtest.c

@@ -793,9 +793,9 @@ mymain(void)
             QEMU_CAPS_IDE_CD);
 
     DO_TEST("disk-geometry", QEMU_CAPS_DRIVE);
-    DO_TEST("disk-iolimits",
+    DO_TEST("disk-blockio",
             QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
-            QEMU_CAPS_IDE_CD, QEMU_CAPS_IOLIMITS);
+            QEMU_CAPS_IDE_CD, QEMU_CAPS_BLOCKIO);
 
     VIR_FREE(driver.stateDir);
     virCapabilitiesFree(driver.caps);