4:31 a.m.
From: Soren Hansen <soren(a)linux2go.dk>
Other drivers will need this same functionality, so move it to up to
conf/domain_conf.c and give it a more general name.
Signed-off-by: Soren Hansen <soren(a)linux2go.dk>
---
src/conf/domain_conf.c | 18 ++++++++++++++++++
src/conf/domain_conf.h | 2 ++
src/libvirt_private.syms | 1 +
src/qemu/qemu_driver.c | 20 ++------------------
4 files changed, 23 insertions(+), 18 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index ee99cd1..e05d5d7 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4064,6 +4064,24 @@ void virDomainDiskInsertPreAlloced(virDomainDefPtr def,
}
+void virDomainDiskRemove(virDomainDefPtr def, size_t i)
+{
+ if (def->ndisks > 1) {
+ memmove(def->disks + i,
+ def->disks + i + 1,
+ sizeof(*def->disks) *
+ (def->ndisks - (i + 1)));
+ def->ndisks--;
+ if (VIR_REALLOC_N(def->disks, def->ndisks) < 0) {
+ /* ignore, harmless */
+ }
+ } else {
+ VIR_FREE(def->disks);
+ def->ndisks = 0;
+ }
+}
+
+
int virDomainControllerInsert(virDomainDefPtr def,
virDomainControllerDefPtr controller)
{
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 92f98bc..7195c04 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1067,6 +1067,8 @@ void virDomainDiskInsertPreAlloced(virDomainDefPtr def,
virDomainDiskDefPtr disk);
int virDomainDiskDefAssignAddress(virCapsPtr caps, virDomainDiskDefPtr def);
+void virDomainDiskRemove(virDomainDefPtr def, size_t i);
+
int virDomainControllerInsert(virDomainDefPtr def,
virDomainControllerDefPtr controller);
void virDomainControllerInsertPreAlloced(virDomainDefPtr def,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index d5a7a73..c2905ba 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -144,6 +144,7 @@ virDomainDiskDefFree;
virDomainDiskDeviceTypeToString;
virDomainDiskInsert;
virDomainDiskInsertPreAlloced;
+virDomainDiskRemove;
virDomainDiskDefAssignAddress;
virDomainControllerInsert;
virDomainControllerInsertPreAlloced;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 656a1e4..25695df 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -8583,22 +8583,6 @@ static inline int qemudFindDisk(virDomainDefPtr def, const char
*dst)
return -1;
}
-static inline void qemudShrinkDisks(virDomainDefPtr def, size_t i)
-{
- if (def->ndisks > 1) {
- memmove(def->disks + i,
- def->disks + i + 1,
- sizeof(*def->disks) *
- (def->ndisks - (i + 1)));
- def->ndisks--;
- if (VIR_REALLOC_N(def->disks, def->ndisks) < 0) {
- /* ignore, harmless */
- }
- } else {
- VIR_FREE(def->disks);
- def->ndisks = 0;
- }
-}
static int qemudDomainDetachPciDiskDevice(struct qemud_driver *driver,
virDomainObjPtr vm,
@@ -8655,7 +8639,7 @@ static int qemudDomainDetachPciDiskDevice(struct qemud_driver
*driver,
qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &detach->info) < 0)
VIR_WARN("Unable to release PCI address on %s",
dev->data.disk->src);
- qemudShrinkDisks(vm->def, i);
+ virDomainDiskRemove(vm->def, i);
virDomainDiskDefFree(detach);
@@ -8719,7 +8703,7 @@ static int qemudDomainDetachSCSIDiskDevice(struct qemud_driver
*driver,
}
qemuDomainObjExitMonitorWithDriver(driver, vm);
- qemudShrinkDisks(vm->def, i);
+ virDomainDiskRemove(vm->def, i);
virDomainDiskDefFree(detach);
--
1.7.0.4
4:31 a.m.
New subject: [libvirt] [PATCH 2/2] Support virDomainAttachDevice and virDomainDetachDevice for disks in UML
From: Soren Hansen <soren(a)linux2go.dk>
UML supports hot plugging and unplugging of various devices. This patch
exposes this functionality for disks.
Signed-off-by: Soren Hansen <soren(a)linux2go.dk>
---
src/uml/uml_driver.c | 239 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 235 insertions(+), 4 deletions(-)
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 9cad7f1..a5c5d6a 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -1683,6 +1683,237 @@ cleanup:
}
+static int umlDomainAttachUmlDisk(struct uml_driver *driver,
+ virDomainObjPtr vm,
+ virDomainDiskDefPtr disk)
+{
+ int i, ret;
+ char *cmd = NULL;
+ char *reply = NULL;
+
+ for (i = 0 ; i < vm->def->ndisks ; i++) {
+ if (STREQ(vm->def->disks[i]->dst, disk->dst)) {
+ umlReportError(VIR_ERR_OPERATION_FAILED,
+ _("target %s already exists"), disk->dst);
+ return -1;
+ }
+ }
+
+ if (!disk->src) {
+ umlReportError(VIR_ERR_INTERNAL_ERROR,
+ "%s", _("disk source path is missing"));
+ goto error;
+ }
+
+ if (virAsprintf(&cmd, "config %s=%s", disk->dst, disk->src) <
0) {
+ virReportOOMError();
+ return -1;
+ }
+
+ if (umlMonitorCommand(driver, vm, cmd, &reply) < 0)
+ goto error;
+
+ if (VIR_REALLOC_N(vm->def->disks, vm->def->ndisks+1) < 0) {
+ virReportOOMError();
+ goto error;
+ }
+
+ if (ret < 0)
+ goto error;
+
+ virDomainDiskInsertPreAlloced(vm->def, disk);
+
+ VIR_FREE(reply);
+ VIR_FREE(cmd);
+
+ return 0;
+
+error:
+
+ VIR_FREE(reply);
+ VIR_FREE(cmd);
+
+ return -1;
+}
+
+
+static int umlDomainAttachDevice(virDomainPtr dom, const char *xml)
+{
+ struct uml_driver *driver = dom->conn->privateData;
+ virDomainObjPtr vm;
+ virDomainDeviceDefPtr dev = NULL;
+ int ret = -1;
+
+ umlDriverLock(driver);
+
+ vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+ if (!vm) {
+ char uuidstr[VIR_UUID_STRING_BUFLEN];
+ virUUIDFormat(dom->uuid, uuidstr);
+ umlReportError(VIR_ERR_NO_DOMAIN,
+ _("no domain with matching uuid '%s'"),
uuidstr);
+ goto cleanup;
+ }
+
+ if (!virDomainObjIsActive(vm)) {
+ umlReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("cannot attach device on inactive
domain"));
+ goto cleanup;
+ }
+
+ dev = virDomainDeviceDefParse(driver->caps, vm->def, xml,
+ VIR_DOMAIN_XML_INACTIVE);
+
+ if (dev == NULL)
+ goto cleanup;
+
+ if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
+ if (dev->data.disk->bus == VIR_DOMAIN_DISK_BUS_UML) {
+ ret = umlDomainAttachUmlDisk(driver, vm, dev->data.disk);
+ if (ret == 0)
+ dev->data.disk = NULL;
+ } else {
+ umlReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("disk bus '%s' cannot be hotplugged."),
+ virDomainDiskBusTypeToString(dev->data.disk->bus));
+ }
+ } else {
+ umlReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("device type '%s' cannot be attached"),
+ virDomainDeviceTypeToString(dev->type));
+ goto cleanup;
+ }
+
+cleanup:
+
+ virDomainDeviceDefFree(dev);
+ if (vm)
+ virDomainObjUnlock(vm);
+ umlDriverUnlock(driver);
+ return ret;
+}
+
+
+static int umlDomainAttachDeviceFlags(virDomainPtr dom,
+ const char *xml,
+ unsigned int flags) {
+ if (flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG) {
+ umlReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("cannot modify the persistent configuration
of a domain"));
+ return -1;
+ }
+
+ return umlDomainAttachDevice(dom, xml);
+}
+
+
+static int umlDomainDetachUmlDisk(struct uml_driver *driver,
+ virDomainObjPtr vm,
+ virDomainDeviceDefPtr dev)
+{
+ int i, ret = -1;
+ virDomainDiskDefPtr detach = NULL;
+ char *cmd;
+ char *reply;
+
+ for (i = 0 ; i < vm->def->ndisks ; i++) {
+ if (STREQ(vm->def->disks[i]->dst, dev->data.disk->dst)) {
+ break;
+ }
+ }
+
+ if (i == vm->def->ndisks) {
+ umlReportError(VIR_ERR_OPERATION_FAILED,
+ _("disk %s not found"), dev->data.disk->dst);
+ return -1;
+ }
+
+ detach = vm->def->disks[i];
+
+ if (virAsprintf(&cmd, "remove %s", detach->dst) < 0) {
+ virReportOOMError();
+ return -1;
+ }
+
+ if (umlMonitorCommand(driver, vm, cmd, &reply) < 0)
+ goto cleanup;
+
+ virDomainDiskRemove(vm->def, i);
+
+ virDomainDiskDefFree(detach);
+
+ ret = 0;
+
+ VIR_FREE(reply);
+
+cleanup:
+ VIR_FREE(cmd);
+
+ return ret;
+}
+
+
+static int umlDomainDetachDevice(virDomainPtr dom, const char *xml) {
+ struct uml_driver *driver = dom->conn->privateData;
+ virDomainObjPtr vm;
+ virDomainDeviceDefPtr dev = NULL;
+ int ret = -1;
+
+ umlDriverLock(driver);
+ vm = virDomainFindByUUID(&driver->domains, dom->uuid);
+ if (!vm) {
+ char uuidstr[VIR_UUID_STRING_BUFLEN];
+ virUUIDFormat(dom->uuid, uuidstr);
+ umlReportError(VIR_ERR_NO_DOMAIN,
+ _("no domain with matching uuid '%s'"),
uuidstr);
+ goto cleanup;
+ }
+
+ if (!virDomainObjIsActive(vm)) {
+ umlReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("cannot detach device on inactive
domain"));
+ goto cleanup;
+ }
+
+ dev = virDomainDeviceDefParse(driver->caps, vm->def, xml,
+ VIR_DOMAIN_XML_INACTIVE);
+ if (dev == NULL)
+ goto cleanup;
+
+ if (dev->type == VIR_DOMAIN_DEVICE_DISK &&
+ dev->data.disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
+ if (dev->data.disk->bus == VIR_DOMAIN_DISK_BUS_UML)
+ ret = umlDomainDetachUmlDisk(driver, vm, dev);
+ else {
+ umlReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("This type of disk cannot be hot unplugged"));
+ }
+ } else {
+ umlReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ "%s", _("This type of device cannot be hot
unplugged"));
+ }
+
+cleanup:
+ virDomainDeviceDefFree(dev);
+ if (vm)
+ virDomainObjUnlock(vm);
+ umlDriverUnlock(driver);
+ return ret;
+}
+
+
+static int umlDomainDetachDeviceFlags(virDomainPtr dom,
+ const char *xml,
+ unsigned int flags) {
+ if (flags & VIR_DOMAIN_DEVICE_MODIFY_CONFIG) {
+ umlReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("cannot modify the persistent configuration
of a domain"));
+ return -1;
+ }
+
+ return umlDomainDetachDevice(dom, xml);
+}
+
static int umlDomainGetAutostart(virDomainPtr dom,
int *autostart) {
@@ -1897,10 +2128,10 @@ static virDriver umlDriver = {
umlDomainStartWithFlags, /* domainCreateWithFlags */
umlDomainDefine, /* domainDefineXML */
umlDomainUndefine, /* domainUndefine */
- NULL, /* domainAttachDevice */
- NULL, /* domainAttachDeviceFlags */
- NULL, /* domainDetachDevice */
- NULL, /* domainDetachDeviceFlags */
+ umlDomainAttachDevice, /* domainAttachDevice */
+ umlDomainAttachDeviceFlags, /* domainAttachDeviceFlags */
+ umlDomainDetachDevice, /* domainDetachDevice */
+ umlDomainDetachDeviceFlags, /* domainDetachDeviceFlags */
NULL, /* domainUpdateDeviceFlags */
umlDomainGetAutostart, /* domainGetAutostart */
umlDomainSetAutostart, /* domainSetAutostart */
--
1.7.0.4
5:11 a.m.
New subject: [libvirt] [PATCH 2/2] Support virDomainAttachDevice and virDomainDetachDevice for disks in UML
On Mon, Aug 23, 2010 at 11:31:27AM +0200, soren(a)linux2go.dk wrote:
From: Soren Hansen <soren(a)linux2go.dk>
UML supports hot plugging and unplugging of various devices. This patch
exposes this functionality for disks.
Signed-off-by: Soren Hansen <soren(a)linux2go.dk>
---
src/uml/uml_driver.c | 239 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 235 insertions(+), 4 deletions(-)
ACK
Daniel
--
|: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :|
|: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
3:20 p.m.
New subject: [libvirt] [PATCH 2/2] Support virDomainAttachDevice and virDomainDetachDevice for disks in UML
2010/8/23 <soren(a)linux2go.dk>:
From: Soren Hansen <soren(a)linux2go.dk>
UML supports hot plugging and unplugging of various devices. This patch
exposes this functionality for disks.
Signed-off-by: Soren Hansen <soren(a)linux2go.dk>
---
src/uml/uml_driver.c | 239 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 235 insertions(+), 4 deletions(-)
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 9cad7f1..a5c5d6a 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -1683,6 +1683,237 @@ cleanup:
}
+static int umlDomainAttachUmlDisk(struct uml_driver *driver,
+ virDomainObjPtr vm,
+ virDomainDiskDefPtr disk)
+{
+ int i, ret;
+ char *cmd = NULL;
+ char *reply = NULL;
+
+ for (i = 0 ; i < vm->def->ndisks ; i++) {
+ if (STREQ(vm->def->disks[i]->dst, disk->dst)) {
+ umlReportError(VIR_ERR_OPERATION_FAILED,
+ _("target %s already exists"), disk->dst);
+ return -1;
+ }
+ }
+
+ if (!disk->src) {
+ umlReportError(VIR_ERR_INTERNAL_ERROR,
+ "%s", _("disk source path is missing"));
+ goto error;
+ }
+
+ if (virAsprintf(&cmd, "config %s=%s", disk->dst, disk->src) <
0) {
+ virReportOOMError();
+ return -1;
+ }
+
+ if (umlMonitorCommand(driver, vm, cmd, &reply) < 0)
+ goto error;
+
+ if (VIR_REALLOC_N(vm->def->disks, vm->def->ndisks+1) < 0) {
+ virReportOOMError();
+ goto error;
+ }
+
+ if (ret < 0)
+ goto error;
I was about to push this patch, but compile testing gave this error:
uml/uml_driver.c: In function 'umlDomainAttachUmlDisk':
uml/uml_driver.c:1729: error: 'ret' may be used uninitialized in this
function [-Wuninitialized]
I think "if (ret < 0) goto error;" and "int ret;" can just be
removed
completely from this function, but I would like have your ACK on this
before doing so.
Matthias
3:42 p.m.
New subject: [libvirt] [PATCH 2/2] Support virDomainAttachDevice and virDomainDetachDevice for disks in UML
On 08/24/2010 02:20 PM, Matthias Bolte wrote:
> +static int umlDomainAttachUmlDisk(struct uml_driver *driver,
> + virDomainObjPtr vm,
> + virDomainDiskDefPtr disk)
> +{
> + int i, ret;
> + char *cmd = NULL;
> + char *reply = NULL;
> +
> + for (i = 0 ; i< vm->def->ndisks ; i++) {
> + if (STREQ(vm->def->disks[i]->dst, disk->dst)) {
> + umlReportError(VIR_ERR_OPERATION_FAILED,
> + _("target %s already exists"), disk->dst);
> + return -1;
> + }
> + }
> +
> + if (!disk->src) {
> + umlReportError(VIR_ERR_INTERNAL_ERROR,
> + "%s", _("disk source path is missing"));
> + goto error;
> + }
> +
> + if (virAsprintf(&cmd, "config %s=%s", disk->dst,
disk->src)< 0) {
> + virReportOOMError();
> + return -1;
> + }
> +
> + if (umlMonitorCommand(driver, vm, cmd,&reply)< 0)
> + goto error;
> +
> + if (VIR_REALLOC_N(vm->def->disks, vm->def->ndisks+1)< 0) {
> + virReportOOMError();
> + goto error;
> + }
> +
> + if (ret< 0)
> + goto error;
I was about to push this patch, but compile testing gave this error:
uml/uml_driver.c: In function 'umlDomainAttachUmlDisk':
uml/uml_driver.c:1729: error: 'ret' may be used uninitialized in this
function [-Wuninitialized]
I think "if (ret< 0) goto error;" and "int ret;" can just be
removed
completely from this function, but I would like have your ACK on this
before doing so.
ACK to that modification - I don't see any real use of ret in this function.
--
Eric Blake eblake(a)redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
4:10 p.m.
New subject: [libvirt] [PATCH 2/2] Support virDomainAttachDevice and virDomainDetachDevice for disks in UML
On 24-08-2010 22:20, Matthias Bolte wrote:
> + if (ret < 0)
> + goto error;
I was about to push this patch, but compile testing gave this error:
uml/uml_driver.c: In function 'umlDomainAttachUmlDisk':
uml/uml_driver.c:1729: error: 'ret' may be used uninitialized in this
function [-Wuninitialized]
I think "if (ret < 0) goto error;" and "int ret;" can just be
removed
completely from this function, but I would like have your ACK on this
before doing so.
Please do so. I haven't a clue where that came from, and due to the
magic of having git rebased every time, I'll never know. :)
--
Soren Hansen
Ubuntu Developer
http://www.ubuntu.com/
4:37 p.m.
New subject: [libvirt] [PATCH 2/2] Support virDomainAttachDevice and virDomainDetachDevice for disks in UML
2010/8/24 Soren Hansen <soren(a)ubuntu.com>:
On 24-08-2010 22:20, Matthias Bolte wrote:
>> + if (ret < 0)
>> + goto error;
>
> I was about to push this patch, but compile testing gave this error:
>
> uml/uml_driver.c: In function 'umlDomainAttachUmlDisk':
> uml/uml_driver.c:1729: error: 'ret' may be used uninitialized in this
> function [-Wuninitialized]
>
> I think "if (ret < 0) goto error;" and "int ret;" can just be
removed
> completely from this function, but I would like have your ACK on this
> before doing so.
Please do so. I haven't a clue where that came from, and due to the
magic of having git rebased every time, I'll never know. :)
Okay, removed the offending code and pushed the result.
Matthias
5:10 a.m.
On Mon, Aug 23, 2010 at 11:31:26AM +0200, soren(a)linux2go.dk wrote:
From: Soren Hansen <soren(a)linux2go.dk>
Other drivers will need this same functionality, so move it to up to
conf/domain_conf.c and give it a more general name.
Signed-off-by: Soren Hansen <soren(a)linux2go.dk>
---
src/conf/domain_conf.c | 18 ++++++++++++++++++
src/conf/domain_conf.h | 2 ++
src/libvirt_private.syms | 1 +
src/qemu/qemu_driver.c | 20 ++------------------
4 files changed, 23 insertions(+), 18 deletions(-)
ACK, looks good.
Daniel
--
|: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :|
|: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
3:46 p.m.
2010/8/23 Daniel P. Berrange <berrange(a)redhat.com>:
On Mon, Aug 23, 2010 at 11:31:26AM +0200, soren(a)linux2go.dk wrote:
> From: Soren Hansen <soren(a)linux2go.dk>
>
> Other drivers will need this same functionality, so move it to up to
> conf/domain_conf.c and give it a more general name.
>
> Signed-off-by: Soren Hansen <soren(a)linux2go.dk>
> ---
> src/conf/domain_conf.c | 18 ++++++++++++++++++
> src/conf/domain_conf.h | 2 ++
> src/libvirt_private.syms | 1 +
> src/qemu/qemu_driver.c | 20 ++------------------
> 4 files changed, 23 insertions(+), 18 deletions(-)
ACK, looks good.
I applied and pushed this patch.
Matthias
5237
days inactive
5238
days old
8 comments
5 participants
participants (5)
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Eric Blake -
Matthias Bolte -
Soren Hansen -
soren＠linux2go.dk