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Implement virDomainAddIOThread and virDomainDelIOThread

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Add libvirt API's to manage adding and deleting IOThreads to/from the
domain
This commit is contained in:
John Ferlan 2015-03-25 17:03:49 -04:00
parent 4dec8a0160
commit 130a0ed281
4 changed files with 142 additions and 0 deletions
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6
include/libvirt/libvirt-domain.h
View File

@ -1615,6 +1615,12 @@ int virDomainPinIOThread(virDomainPtr domain,
unsigned char *cpumap,
int maplen,
unsigned int flags);
int virDomainAddIOThread(virDomainPtr domain,
unsigned int iothread_id,
unsigned int flags);
int virDomainDelIOThread(virDomainPtr domain,
unsigned int iothread_id,
unsigned int flags);
/**
* VIR_USE_CPU:

12
src/driver-hypervisor.h
View File

@ -392,6 +392,16 @@ typedef int
int maplen,
unsigned int flags);
typedef int
(*virDrvDomainAddIOThread)(virDomainPtr domain,
unsigned int iothread_id,
unsigned int flags);
typedef int
(*virDrvDomainDelIOThread)(virDomainPtr domain,
unsigned int iothread_id,
unsigned int flags);
typedef int
(*virDrvDomainGetSecurityLabel)(virDomainPtr domain,
virSecurityLabelPtr seclabel);
@ -1273,6 +1283,8 @@ struct _virHypervisorDriver {
virDrvDomainGetMaxVcpus domainGetMaxVcpus;
virDrvDomainGetIOThreadInfo domainGetIOThreadInfo;
virDrvDomainPinIOThread domainPinIOThread;
virDrvDomainAddIOThread domainAddIOThread;
virDrvDomainDelIOThread domainDelIOThread;
virDrvDomainGetSecurityLabel domainGetSecurityLabel;
virDrvDomainGetSecurityLabelList domainGetSecurityLabelList;
virDrvNodeGetSecurityModel nodeGetSecurityModel;

118
src/libvirt-domain.c
View File

@ -8019,6 +8019,124 @@ virDomainPinIOThread(virDomainPtr domain,
}
/**
* virDomainAddIOThread:
* @domain: a domain object
* @iothread_id: the specific IOThread ID value to add
* @flags: bitwise-OR of virDomainModificationImpact
*
* Dynamically add an IOThread to the domain. If @iothread_id is a positive
* non-zero value, then attempt to add the specific IOThread ID and error
* out if the iothread id already exists.
*
* Note that this call can fail if the underlying virtualization hypervisor
* does not support it or if growing the number is arbitrarily limited.
* This function requires privileged access to the hypervisor.
*
* @flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG.
* Both flags may be set.
* If VIR_DOMAIN_AFFECT_LIVE is set, the change affects a running domain
* and may fail if domain is not alive.
* If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state,
* and will fail for transient domains. If neither flag is specified (that is,
* @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies
* persistent setup, while an active domain is hypervisor-dependent on whether
* just live or both live and persistent state is changed.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainAddIOThread(virDomainPtr domain,
unsigned int iothread_id,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "iothread_id=%u, flags=%x",
iothread_id, flags);
virResetLastError();
virCheckDomainReturn(domain, -1);
virCheckReadOnlyGoto(domain->conn->flags, error);
conn = domain->conn;
if (conn->driver->domainAddIOThread) {
int ret;
ret = conn->driver->domainAddIOThread(domain, iothread_id, flags);
if (ret < 0)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainDelIOThread:
* @domain: a domain object
* @iothread_id: the specific IOThread ID value to delete
* @flags: bitwise-OR of virDomainModificationImpact
*
* Dynamically delete an IOThread from the domain. The @iothread_id to be
* deleted must not have a resource associated with it and can be any of
* the currently valid IOThread ID's.
*
* Note that this call can fail if the underlying virtualization hypervisor
* does not support it or if reducing the number is arbitrarily limited.
* This function requires privileged access to the hypervisor.
*
* @flags may include VIR_DOMAIN_AFFECT_LIVE or VIR_DOMAIN_AFFECT_CONFIG.
* Both flags may be set.
* If VIR_DOMAIN_AFFECT_LIVE is set, the change affects a running domain
* and may fail if domain is not alive.
* If VIR_DOMAIN_AFFECT_CONFIG is set, the change affects persistent state,
* and will fail for transient domains. If neither flag is specified (that is,
* @flags is VIR_DOMAIN_AFFECT_CURRENT), then an inactive domain modifies
* persistent setup, while an active domain is hypervisor-dependent on whether
* just live or both live and persistent state is changed.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virDomainDelIOThread(virDomainPtr domain,
unsigned int iothread_id,
unsigned int flags)
{
virConnectPtr conn;
VIR_DOMAIN_DEBUG(domain, "iothread_id=%u, flags=%x", iothread_id, flags);
virResetLastError();
virCheckDomainReturn(domain, -1);
virCheckReadOnlyGoto(domain->conn->flags, error);
virCheckNonZeroArgGoto(iothread_id, error);
conn = domain->conn;
if (conn->driver->domainDelIOThread) {
int ret;
ret = conn->driver->domainDelIOThread(domain, iothread_id, flags);
if (ret < 0)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(domain->conn);
return -1;
}
/**
* virDomainGetSecurityLabel:
* @domain: a domain object

6
src/libvirt_public.syms
View File

@ -704,4 +704,10 @@ LIBVIRT_1.2.14 {
virDomainInterfaceFree;
} LIBVIRT_1.2.12;
LIBVIRT_1.2.15 {
global:
virDomainAddIOThread;
virDomainDelIOThread;
} LIBVIRT_1.2.14;
# .... define new API here using predicted next version number ....