The new API is named as "virDomainBlockResize", intending to add
support for qemu monitor command "block_resize" (both HMP and QMP).
Similar with APIs like "virDomainSetMemoryFlags", the units for
argument "size" is kilobytes.
---
include/libvirt/libvirt.h.in | 4 ++
python/generator.py | 1 +
src/driver.h | 7 ++++
src/libvirt.c | 68 ++++++++++++++++++++++++++++++++++++++++++
src/libvirt_public.syms | 5 +++
5 files changed, 85 insertions(+), 0 deletions(-)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 5771ba7..0fd20b6 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -1180,6 +1180,10 @@ int virDomainBlockPeek (virDomainPtr dom,
size_t size,
void *buffer,
unsigned int flags);
+int virDomainBlockResize (virDomainPtr dom,
+ const char *path,
+ unsigned long long size,
+ unsigned int flags);
/** virDomainBlockInfo:
diff --git a/python/generator.py b/python/generator.py
index d0d3ae6..28c15c1 100755
--- a/python/generator.py
+++ b/python/generator.py
@@ -370,6 +370,7 @@ skip_impl = (
'virNodeGetCPUStats',
'virNodeGetMemoryStats',
'virDomainGetBlockJobInfo',
+ 'virDomainBlockResize',
)
diff --git a/src/driver.h b/src/driver.h
index 5136fb5..ad6b541 100644
--- a/src/driver.h
+++ b/src/driver.h
@@ -366,6 +366,12 @@ typedef int
unsigned long long offset, size_t size,
void *buffer,
unsigned int flags);
+typedef int
+ (*virDrvDomainBlockResize)
+ (virDomainPtr domain,
+ const char *path,
+ unsigned long long size,
+ unsigned int flags);
typedef int
(*virDrvDomainMemoryPeek)
@@ -799,6 +805,7 @@ struct _virDriver {
virDrvDomainMigratePrepare domainMigratePrepare;
virDrvDomainMigratePerform domainMigratePerform;
virDrvDomainMigrateFinish domainMigrateFinish;
+ virDrvDomainBlockResize domainBlockResize;
virDrvDomainBlockStats domainBlockStats;
virDrvDomainInterfaceStats domainInterfaceStats;
virDrvDomainMemoryStats domainMemoryStats;
diff --git a/src/libvirt.c b/src/libvirt.c
index 5ff8d89..3deafd1 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -6533,6 +6533,74 @@ error:
}
/**
+ * virDomainBlockResize:
+ * @dom: pointer to the domain object
+ * @path: path to the block image
+ * @size: new size of the block image in kilobytes
+ * @flags: unused, always pass 0
+ *
+ * Note that this call may fail if the underlying virtualization hypervisor
+ * does not support it. And this call requires privileged access to the
+ * hypervisor.
+ *
+ * 'path' must be a device or file corresponding to the domain.
+ * In other words it must be the precise string returned in
+ * a <disk><source dev='...'/></disk> from
+ * virDomainGetXMLDesc.
+ *
+ * Resize a block device of domain while the domain is running.
+ *
+ * Returns: 0 in case of success or -1 in case of failure.
+ */
+
+int
+virDomainBlockResize (virDomainPtr dom,
+ const char *path,
+ unsigned long long size,
+ unsigned int flags)
+{
+ virConnectPtr conn;
+
+ VIR_DOMAIN_DEBUG(dom, "path=%s, size=%llu, flags=%x",
+ path, size, flags);
+
+ virResetLastError();
+
+ if (!VIR_IS_CONNECTED_DOMAIN (dom)) {
+ virLibDomainError(VIR_ERR_INVALID_DOMAIN, __FUNCTION__);
+ virDispatchError(NULL);
+ return -1;
+ }
+ conn = dom->conn;
+
+ if (dom->conn->flags & VIR_CONNECT_RO) {
+ virLibDomainError(VIR_ERR_OPERATION_DENIED, __FUNCTION__);
+ goto error;
+ }
+
+ if (!path) {
+ virLibDomainError(VIR_ERR_INVALID_ARG,
+ _("path is NULL"));
+ goto error;
+ }
+
+ if (conn->driver->domainBlockResize) {
+ int ret;
+ ret =conn->driver->domainBlockResize(dom, path, size, flags);
+ if (ret < 0)
+ goto error;
+ return ret;
+ }
+
+ virLibDomainError(VIR_ERR_NO_SUPPORT, __FUNCTION__);
+
+error:
+ virDispatchError(dom->conn);
+ return -1;
+}
+
+
+/**
* virDomainMemoryPeek:
* @dom: pointer to the domain object
* @start: start of memory to peek
diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms
index c2b6666..448209d 100644
--- a/src/libvirt_public.syms
+++ b/src/libvirt_public.syms
@@ -480,4 +480,9 @@ LIBVIRT_0.9.4 {
virDomainBlockPull;
} LIBVIRT_0.9.3;
+LIBVIRT_0.9.5 {
+ global:
+ virDomainBlockResize;
+} LIBVIRT_0.9.4;
+
# .... define new API here using predicted next version number ....
--
1.7.6
--
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