8:55 a.m.
v1 to v2: added relax schema for disk of block and dir type
removed original patch 3/5.
The set of patches is trying to add 'startupPolicy' attribute support
to the source element of hard disks. Policy levels are using the
mandatory, requisite, optional levels as originally documented.
For the 'optional' policy, there is a little difference from CDROM and
Floppy which only drop its source path, for disks, if missing, the
checking function will drop their definitions, because qemu doesn't
allow missing source path for hard disk.
If guest is using per-device boot element for its devices, after dropping
one or more bootable device, the boot order will not be contiguous, the way
here I use is to reorder them to make them contiguous. In this way, I
introduce two new bit-operating functions
virBitmapNextLastSetBit: Search for the last set bit before
certain position.
virBitmapNextLastClearBit: Search for the last clear bit before
certain position.
Guannan Ren
[PATCH v2 1/4] conf: add startupPolicy attribute for harddisk
[PATCH v2 2/4] util: add two functions to find last set or unset bit in bitmap
[PATCH v2 3/4] qemu: drop disk definition if missing and reorder per-device boot
sequence
[PATCH v2 4/4] event: add hard disk dropping event reason enum
docs/formatdomain.html.in | 9 ++++++---
docs/schemas/domaincommon.rng | 6 ++++++
include/libvirt/libvirt.h.in | 1 +
src/conf/domain_conf.c | 21 +++++++++++++++------
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 2 ++
src/qemu/qemu_domain.c | 106
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------
src/util/virbitmap.c | 96
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/util/virbitmap.h | 6 ++++++
tests/virbitmaptest.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++-
10 files changed, 278 insertions(+), 21 deletions(-)
8:55 a.m.
New subject: [libvirt] [PATCH v2 1/4] conf: add startupPolicy attribute for harddisk
Add startupPolicy attribute policy for harddisk with type "file",
"block" and "dir". The "network" type disk is still not
supported.
---
docs/formatdomain.html.in | 9 ++++++---
docs/schemas/domaincommon.rng | 6 ++++++
src/conf/domain_conf.c | 19 +++++++++++++------
3 files changed, 25 insertions(+), 9 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 8a3c3b7..15b27af 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -1450,8 +1450,8 @@
For a "file" disk type which represents a cdrom or floppy
(the <code>device</code> attribute), it is possible to define
policy what to do with the disk if the source file is not accessible.
- This is done by the <code>startupPolicy</code> attribute, accepting
- these values:
+ This is done by the <code>startupPolicy</code> attribute
+ (<span class="since">Since 0.9.7</span>), accepting these
values:
<table class="top_table">
<tr>
<td> mandatory </td>
@@ -1467,7 +1467,10 @@
<td> drop if missing at any start attempt </td>
</tr>
</table>
- <span class="since">Since 0.9.7</span>
+ <span class="since">Since 1.0.4</span>, the
<code>startupPolicy</code> is extended
+ to support hard disks besides cdrom and floppy. However, the disk of
"network"
+ type is still not reached. For the guest which is using per-device
<code>boot</code>
+ element, the boot devices will be reordered after dropping its bootable disks.
</dd>
<dt><code>mirror</code></dt>
<dd>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 9792065..44486d4 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1048,6 +1048,9 @@
<ref name="absFilePath"/>
</attribute>
<optional>
+ <ref name="startupPolicy"/>
+ </optional>
+ <optional>
<ref name='devSeclabel'/>
</optional>
</element>
@@ -1065,6 +1068,9 @@
<attribute name="dir">
<ref name="absFilePath"/>
</attribute>
+ <optional>
+ <ref name="startupPolicy"/>
+ </optional>
<empty/>
</element>
</optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 3278e9c..177faaa 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4044,7 +4044,6 @@ virDomainDiskDefParseXML(virCapsPtr caps,
switch (def->type) {
case VIR_DOMAIN_DISK_TYPE_FILE:
source = virXMLPropString(cur, "file");
- startupPolicy = virXMLPropString(cur, "startupPolicy");
break;
case VIR_DOMAIN_DISK_TYPE_BLOCK:
source = virXMLPropString(cur, "dev");
@@ -4137,6 +4136,8 @@ virDomainDiskDefParseXML(virCapsPtr caps,
goto error;
}
+ startupPolicy = virXMLPropString(cur, "startupPolicy");
+
/* People sometimes pass a bogus '' source path
when they mean to omit the source element
completely (e.g. CDROM without media). This is
@@ -4674,11 +4675,10 @@ virDomainDiskDefParseXML(virCapsPtr caps,
goto error;
}
- if (def->device != VIR_DOMAIN_DISK_DEVICE_CDROM &&
- def->device != VIR_DOMAIN_DISK_DEVICE_FLOPPY) {
+ if (def->type == VIR_DOMAIN_DISK_TYPE_NETWORK) {
virReportError(VIR_ERR_INVALID_ARG,
- _("Setting disk %s is allowed only for "
- "cdrom or floppy"),
+ _("Setting disk %s is not allowed for "
+ "disk of network type"),
startupPolicy);
goto error;
}
@@ -12838,6 +12838,9 @@ virDomainDiskDefFormat(virBufferPtr buf,
case VIR_DOMAIN_DISK_TYPE_BLOCK:
virBufferEscapeString(buf, " <source dev='%s'",
def->src);
+ if (def->startupPolicy)
+ virBufferEscapeString(buf, " startupPolicy='%s'",
+ startupPolicy);
if (def->nseclabels) {
virBufferAddLit(buf, ">\n");
virBufferAdjustIndent(buf, 8);
@@ -12850,8 +12853,12 @@ virDomainDiskDefFormat(virBufferPtr buf,
}
break;
case VIR_DOMAIN_DISK_TYPE_DIR:
- virBufferEscapeString(buf, " <source
dir='%s'/>\n",
+ virBufferEscapeString(buf, " <source dir='%s'",
def->src);
+ if (def->startupPolicy)
+ virBufferEscapeString(buf, " startupPolicy='%s'",
+ startupPolicy);
+ virBufferAddLit(buf, "/>\n");
break;
case VIR_DOMAIN_DISK_TYPE_NETWORK:
virBufferAsprintf(buf, " <source protocol='%s'",
--
1.7.11.2
8:55 a.m.
New subject: [libvirt] [PATCH v2 2/4] util: add two functions to find last set or unset bit in bitmap
virBitmapNextLastSetBit: Search for the last set bit before
certain position.
virBitmapNextLastSetBit: Search for the last clear bit before
certain position.
---
src/libvirt_private.syms | 2 +
src/util/virbitmap.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
src/util/virbitmap.h | 6 +++
tests/virbitmaptest.c | 51 ++++++++++++++++++++++++-
4 files changed, 154 insertions(+), 1 deletion(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 5cad990..a17465a 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1045,6 +1045,8 @@ virBitmapNew;
virBitmapNewCopy;
virBitmapNewData;
virBitmapNextClearBit;
+virBitmapNextLastClearBit;
+virBitmapNextLastSetBit;
virBitmapNextSetBit;
virBitmapParse;
virBitmapSetAll;
diff --git a/src/util/virbitmap.c b/src/util/virbitmap.c
index 21509ac..bb677db 100644
--- a/src/util/virbitmap.c
+++ b/src/util/virbitmap.c
@@ -50,6 +50,21 @@ struct _virBitmap {
#define VIR_BITMAP_BIT_OFFSET(b) ((b) % VIR_BITMAP_BITS_PER_UNIT)
#define VIR_BITMAP_BIT(b) (1UL << VIR_BITMAP_BIT_OFFSET(b))
+/* helper function to get last set bit in long integer */
+static int
+flsl(long mask)
+{
+ int bit = VIR_BITMAP_BITS_PER_UNIT;
+
+ if (mask == 0)
+ return 0;
+
+ for (; !(mask & 1UL << (VIR_BITMAP_BITS_PER_UNIT - 1)); bit--) {
+ mask = (unsigned long)mask << 1;
+ }
+
+ return bit;
+}
/**
* virBitmapNew:
@@ -632,6 +647,46 @@ virBitmapNextSetBit(virBitmapPtr bitmap, ssize_t pos)
}
/**
+ * virBitmapNextLastSetBit
+ * @bitmap: the bitmap
+ * @pos: the position before which to search for a set bit
+ *
+ * Search for the last set bit before position @pos in bitmap @bitmap.
+ * @pos can be -1 to search for the last set bit. Position starts
+ * at bitmap->max_bit.
+ */
+
+ssize_t
+virBitmapNextLastSetBit(virBitmapPtr bitmap, ssize_t pos)
+{
+ ssize_t nl;
+ size_t nb;
+ unsigned long bits;
+
+ if (pos < 0)
+ pos = bitmap->max_bit;
+
+ pos--;
+
+ if (pos < 0 || pos >= bitmap->max_bit)
+ return -1;
+
+ nl = pos / VIR_BITMAP_BITS_PER_UNIT;
+ nb = pos % VIR_BITMAP_BITS_PER_UNIT;
+
+ bits = bitmap->map[nl] & -1UL >> (VIR_BITMAP_BITS_PER_UNIT - nb - 1);
+
+ while (bits == 0 && --nl >= 0) {
+ bits = bitmap->map[nl];
+ }
+
+ if (bits == 0)
+ return -1;
+
+ return flsl(bits) - 1 + nl * VIR_BITMAP_BITS_PER_UNIT;
+}
+
+/**
* virBitmapNextClearBit:
* @bitmap: the bitmap
* @pos: the position after which to search for a clear bit
@@ -679,6 +734,47 @@ virBitmapNextClearBit(virBitmapPtr bitmap, ssize_t pos)
return ffsl(bits) - 1 + nl * VIR_BITMAP_BITS_PER_UNIT;
}
+/**
+ * virBitmapNextLastClearBit:
+ * @bitmap: the bitmap
+ * @pos: the position before which to search for a clear bit
+ *
+ * Search for the last clear bit before position @pos in bitmap @bitmap.
+ * @pos can be -1 to search for the last clear bit. Position starts
+ * at bitmap->max_bit.
+ *
+ * Returns the position of the found bit, or -1 if no bit found.
+ */
+ssize_t
+virBitmapNextLastClearBit(virBitmapPtr bitmap, ssize_t pos)
+{
+ ssize_t nl;
+ size_t nb;
+ unsigned long bits;
+
+ if (pos < 0)
+ pos = bitmap->max_bit;
+
+ pos--;
+
+ if (pos < 0 || pos >= bitmap->max_bit)
+ return -1;
+
+ nl = pos / VIR_BITMAP_BITS_PER_UNIT;
+ nb = pos % VIR_BITMAP_BITS_PER_UNIT;
+
+ bits = ~bitmap->map[nl] & -1UL >> (VIR_BITMAP_BITS_PER_UNIT - nb - 1);
+
+ while (bits == 0 && --nl >= 0) {
+ bits = ~bitmap->map[nl];
+ }
+
+ if (bits == 0)
+ return -1;
+
+ return flsl(bits) - 1 + nl * VIR_BITMAP_BITS_PER_UNIT;
+}
+
/* Return the number of bits currently set in the map. */
size_t
virBitmapCountBits(virBitmapPtr bitmap)
diff --git a/src/util/virbitmap.h b/src/util/virbitmap.h
index 044c7a6..d650e1f 100644
--- a/src/util/virbitmap.h
+++ b/src/util/virbitmap.h
@@ -103,9 +103,15 @@ bool virBitmapIsAllSet(virBitmapPtr bitmap)
ssize_t virBitmapNextSetBit(virBitmapPtr bitmap, ssize_t pos)
ATTRIBUTE_NONNULL(1);
+ssize_t virBitmapNextLastSetBit(virBitmapPtr bitmap, ssize_t pos)
+ ATTRIBUTE_NONNULL(1);
+
ssize_t virBitmapNextClearBit(virBitmapPtr bitmap, ssize_t pos)
ATTRIBUTE_NONNULL(1);
+ssize_t virBitmapNextLastClearBit(virBitmapPtr bitmap, ssize_t pos)
+ ATTRIBUTE_NONNULL(1);
+
size_t virBitmapCountBits(virBitmapPtr bitmap)
ATTRIBUTE_NONNULL(1);
diff --git a/tests/virbitmaptest.c b/tests/virbitmaptest.c
index 95d010a..f0a3086 100644
--- a/tests/virbitmaptest.c
+++ b/tests/virbitmaptest.c
@@ -161,7 +161,9 @@ error:
return ret;
}
-/* test for virBitmapNextSetBit, virBitmapNextClearBit */
+/* test for virBitmapNextSetBit, virBitmapNextClearBit
+ * virBitmapNextLastSetBit, virBitmapNextLastClearBit
+ */
static int test4(const void *data ATTRIBUTE_UNUSED)
{
const char *bitsString = "0, 2-4, 6-10, 12, 14-18, 20, 22, 25";
@@ -193,9 +195,21 @@ static int test4(const void *data ATTRIBUTE_UNUSED)
if (virBitmapNextClearBit(bitmap, i - 1) != i)
goto error;
}
+
if (virBitmapNextClearBit(bitmap, i) != -1)
goto error;
+ if (virBitmapNextLastSetBit(bitmap, -1) != -1)
+ goto error;
+
+ for (i = size; i > 0; i--) {
+ if (virBitmapNextLastClearBit(bitmap, i) != i - 1)
+ goto error;
+ }
+
+ if (virBitmapNextLastClearBit(bitmap, i) != -1)
+ goto error;
+
virBitmapFree(bitmap);
bitmap = NULL;
@@ -218,6 +232,18 @@ static int test4(const void *data ATTRIBUTE_UNUSED)
if (virBitmapNextSetBit(bitmap, i) != -1)
goto error;
+ j = 1;
+ i = -1;
+
+ while (j <= ARRAY_CARDINALITY(bitsPos)) {
+ i = virBitmapNextLastSetBit(bitmap, i);
+ if (i != bitsPos[ARRAY_CARDINALITY(bitsPos) - j++])
+ goto error;
+ }
+
+ if (virBitmapNextLastSetBit(bitmap, i) != -1)
+ goto error;
+
j = 0;
i = -1;
@@ -230,6 +256,18 @@ static int test4(const void *data ATTRIBUTE_UNUSED)
if (virBitmapNextClearBit(bitmap, i) != -1)
goto error;
+ j = 1;
+ i = -1;
+
+ while (j <= ARRAY_CARDINALITY(bitsPosInv)) {
+ i = virBitmapNextLastClearBit(bitmap, i);
+ if (i != bitsPosInv[ARRAY_CARDINALITY(bitsPosInv) - j++])
+ goto error;
+ }
+
+ if (virBitmapNextLastClearBit(bitmap, i) != -1)
+ goto error;
+
/* 3. full set */
virBitmapSetAll(bitmap);
@@ -244,6 +282,17 @@ static int test4(const void *data ATTRIBUTE_UNUSED)
if (virBitmapNextClearBit(bitmap, -1) != -1)
goto error;
+ for (i = size; i > 0; i--) {
+ if (virBitmapNextLastSetBit(bitmap, i) != i - 1)
+ goto error;
+ }
+
+ if (virBitmapNextLastSetBit(bitmap, i) != -1)
+ goto error;
+
+ if (virBitmapNextLastClearBit(bitmap, -1) != -1)
+ goto error;
+
virBitmapFree(bitmap);
return 0;
--
1.7.11.2
8:55 a.m.
New subject: [libvirt] [PATCH v2 3/4] qemu: drop disk definition if missing and reorder per-device boot sequence
With 'optional' startupPolicy set, when one or more disk are missing,
the qemu process drops their definitions and bootups the vm.
When the vm is using per-device boot elements, then we need to
reorder them in order to perform migrate successfully if necessary.
During the reordering, it uses virBitmapNextLastSetBit to find the
last set bit.
---
src/conf/domain_conf.c | 2 ++
src/conf/domain_conf.h | 1 +
src/qemu/qemu_domain.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++----
3 files changed, 86 insertions(+), 7 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 177faaa..069e702 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -10992,6 +10992,8 @@ virDomainDefParseXML(virCapsPtr caps,
if (virDomainDefAddImplicitControllers(def) < 0)
goto error;
+ /* Save the valid number of per-device boot */
+ def->os.nBootPerDevs = bootMapSize;
virBitmapFree(bootMap);
return def;
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 96f11ba..362f645 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1543,6 +1543,7 @@ struct _virDomainOSDef {
char *machine;
size_t nBootDevs;
int bootDevs[VIR_DOMAIN_BOOT_LAST];
+ unsigned long nBootPerDevs;
/* enum virDomainBootMenu */
int bootmenu;
char *init;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index c79b05d..4594b2c 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1791,30 +1791,89 @@ cleanup:
virObjectUnref(cfg);
}
+/* Reorder devices with per-device boot, make them contiguous */
+static int
+qemuDomainPerDevicesBootReorder(virDomainDefPtr def,
+ virBitmapPtr bitmap)
+{
+ size_t count;
+ size_t n;
+ int i = -1;
+
+ if (bitmap == NULL)
+ return 0;
+
+ count = virBitmapCountBits(bitmap);
+
+ while (count && count--) {
+ i = virBitmapNextLastSetBit(bitmap, i);
+ for (n = 0 ; n < def->ndisks ; n++) {
+ virDomainDiskDefPtr disk = def->disks[n];
+ if (disk->info.bootIndex > i + 1)
+ disk->info.bootIndex -= 1;
+ }
+
+ for (n = 0 ; n < def->nnets ; n++) {
+ virDomainNetDefPtr net = def->nets[n];
+ if (net->info.bootIndex > i + 1)
+ net->info.bootIndex -= 1;
+ }
+
+ for (n = 0 ; n < def->nhostdevs ; n++) {
+ virDomainHostdevDefPtr hostdev = def->hostdevs[n];
+ if (hostdev->info->bootIndex > i + 1)
+ hostdev->info->bootIndex -= 1;
+ }
+
+ for (n = 0 ; n < def->nredirdevs ; n++) {
+ virDomainRedirdevDefPtr redirdev = def->redirdevs[n];
+ if (redirdev->info.bootIndex > i + 1)
+ redirdev->info.bootIndex -= 1;
+ }
+ }
+
+ return 0;
+}
+
int
qemuDomainCheckDiskPresence(virQEMUDriverPtr driver,
virDomainObjPtr vm,
bool cold_boot)
{
int ret = -1;
- int i;
+ size_t i;
virDomainDiskDefPtr disk;
char uuid[VIR_UUID_STRING_BUFLEN];
virDomainEventPtr event = NULL;
+ virDomainDefPtr def = vm->def;
+ size_t count = def->ndisks;
+ unsigned long bootMapSize = def->os.nBootPerDevs;
+ size_t nextDisk = 0;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+ virBitmapPtr bitmap = NULL;
+
+ virUUIDFormat(def->uuid, uuid);
- virUUIDFormat(vm->def->uuid, uuid);
+ if (bootMapSize) {
+ if (!(bitmap = virBitmapNew(bootMapSize))) {
+ virReportOOMError();
+ goto cleanup;
+ }
+ }
- for (i = 0; i < vm->def->ndisks; i++) {
- disk = vm->def->disks[i];
+ for (i = 0; i < count; i++) {
+ disk = def->disks[nextDisk];
- if (!disk->startupPolicy || !disk->src)
+ if (!disk->startupPolicy || !disk->src) {
+ nextDisk++;
continue;
+ }
if (virFileAccessibleAs(disk->src, F_OK,
cfg->user,
cfg->group) >= 0) {
/* disk accessible */
+ nextDisk++;
continue;
}
@@ -1846,20 +1905,37 @@ qemuDomainCheckDiskPresence(virQEMUDriverPtr driver,
VIR_DEBUG("Dropping disk '%s' on domain '%s' (UUID
'%s') "
"due to inaccessible source '%s'",
- disk->dst, vm->def->name, uuid, disk->src);
+ disk->dst, def->name, uuid, disk->src);
event = virDomainEventDiskChangeNewFromObj(vm, disk->src, NULL,
disk->info.alias,
VIR_DOMAIN_EVENT_DISK_CHANGE_MISSING_ON_START);
if (event)
qemuDomainEventQueue(driver, event);
- VIR_FREE(disk->src);
+ /* For CDROM and Floppy disk, only drop source path.
+ * For Hard disk, drop its definition.
+ */
+ if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM ||
+ disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY) {
+ VIR_FREE(disk->src);
+ nextDisk++;
+ } else {
+ if (bitmap && disk->info.bootIndex)
+ ignore_value(virBitmapSetBit(bitmap, disk->info.bootIndex - 1));
+
+ virDomainDiskDefFree(disk);
+ if (VIR_DELETE_ELEMENT(def->disks, nextDisk, def->ndisks) < 0)
+ goto cleanup;
+ }
}
+ qemuDomainPerDevicesBootReorder(def, bitmap);
+
ret = 0;
cleanup:
virObjectUnref(cfg);
+ virBitmapFree(bitmap);
return ret;
}
--
1.7.11.2
8:55 a.m.
New subject: [libvirt] [PATCH v2 4/4] event: add hard disk dropping event reason enum
VIR_DOMAIN_EVENT_DISK_CHANGE_MISSING_ON_START
---
include/libvirt/libvirt.h.in | 1 +
src/qemu/qemu_domain.c | 18 +++++++++++++-----
2 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index f6a7aff..72df5a2 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -4603,6 +4603,7 @@ typedef void (*virConnectDomainEventBlockJobCallback)(virConnectPtr
conn,
*/
typedef enum {
VIR_DOMAIN_EVENT_DISK_CHANGE_MISSING_ON_START = 0, /* oldSrcPath is set */
+ VIR_DOMAIN_EVENT_HARDDISK_DROP_MISSING_ON_START = 1,
#ifdef VIR_ENUM_SENTINELS
VIR_DOMAIN_EVENT_DISK_CHANGE_LAST
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 4594b2c..7ce8b1d 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1907,22 +1907,30 @@ qemuDomainCheckDiskPresence(virQEMUDriverPtr driver,
"due to inaccessible source '%s'",
disk->dst, def->name, uuid, disk->src);
- event = virDomainEventDiskChangeNewFromObj(vm, disk->src, NULL,
disk->info.alias,
-
VIR_DOMAIN_EVENT_DISK_CHANGE_MISSING_ON_START);
- if (event)
- qemuDomainEventQueue(driver, event);
-
/* For CDROM and Floppy disk, only drop source path.
* For Hard disk, drop its definition.
*/
if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM ||
disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY) {
+
+ event = virDomainEventDiskChangeNewFromObj(vm, disk->src, NULL,
+ disk->info.alias,
+
VIR_DOMAIN_EVENT_DISK_CHANGE_MISSING_ON_START);
+ if (event)
+ qemuDomainEventQueue(driver, event);
+
VIR_FREE(disk->src);
nextDisk++;
} else {
if (bitmap && disk->info.bootIndex)
ignore_value(virBitmapSetBit(bitmap, disk->info.bootIndex - 1));
+ event = virDomainEventDiskChangeNewFromObj(vm, disk->src, NULL,
+ disk->info.alias,
+
VIR_DOMAIN_EVENT_HARDDISK_DROP_MISSING_ON_START);
+ if (event)
+ qemuDomainEventQueue(driver, event);
+
virDomainDiskDefFree(disk);
if (VIR_DELETE_ELEMENT(def->disks, nextDisk, def->ndisks) < 0)
goto cleanup;
--
1.7.11.2
7:24 a.m.
On 03/19/2013 09:55 PM, Guannan Ren wrote:
v1 to v2: added relax schema for disk of block and dir type
removed original patch 3/5.
The set of patches is trying to add 'startupPolicy' attribute support
to the source element of hard disks. Policy levels are using the
mandatory, requisite, optional levels as originally documented.
For the 'optional' policy, there is a little difference from CDROM and
Floppy which only drop its source path, for disks, if missing, the
checking function will drop their definitions, because qemu doesn't
allow missing source path for hard disk.
If guest is using per-device boot element for its devices, after dropping
one or more bootable device, the boot order will not be contiguous, the way
here I use is to reorder them to make them contiguous. In this way, I
introduce two new bit-operating functions
virBitmapNextLastSetBit: Search for the last set bit before
certain position.
virBitmapNextLastClearBit: Search for the last clear bit before
certain position.
Guannan Ren
[PATCH v2 1/4] conf: add startupPolicy attribute for harddisk
[PATCH v2 2/4] util: add two functions to find last set or unset bit in bitmap
[PATCH v2 3/4] qemu: drop disk definition if missing and reorder per-device boot
sequence
[PATCH v2 4/4] event: add hard disk dropping event reason enum
docs/formatdomain.html.in | 9 ++++++---
docs/schemas/domaincommon.rng | 6 ++++++
include/libvirt/libvirt.h.in | 1 +
src/conf/domain_conf.c | 21 +++++++++++++++------
src/conf/domain_conf.h | 1 +
src/libvirt_private.syms | 2 ++
src/qemu/qemu_domain.c | 106
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------
src/util/virbitmap.c | 96
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
src/util/virbitmap.h | 6 ++++++
tests/virbitmaptest.c | 51
++++++++++++++++++++++++++++++++++++++++++++++++++-
10 files changed, 278 insertions(+), 21 deletions(-)
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Guannan
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Guannan Ren