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Make QEMU perform managed save of all VMs on stop of libvirtd

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When the virStateStop() method is invoked, perform a managed
save of all VMs currently running

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange 2012-10-31 19:03:53 +00:00
parent 55dc872bd8
commit 8f9a69317d
1 changed files with 69 additions and 0 deletions
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69
src/qemu/qemu_driver.c
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@ -996,6 +996,74 @@ qemuActive(void) {
return active;
}
/*
* qemuStop:
*
* Save any VMs in preparation for shutdown
*
*/
static int
qemuStop(void) {
int ret = -1;
const char *uri;
virConnectPtr conn;
int numDomains;
size_t i;
int state;
virDomainPtr *domains = NULL;
unsigned int *flags = NULL;
qemuDriverLock(qemu_driver);
uri = qemu_driver->privileged ?
"qemu:///system" :
"qemu:///session";
qemuDriverUnlock(qemu_driver);
if (!(conn = virConnectOpen(uri)))
return -1;
if ((numDomains = virConnectListAllDomains(conn,
&domains,
VIR_CONNECT_LIST_DOMAINS_ACTIVE)) < 0)
goto cleanup;
if (VIR_ALLOC_N(flags, numDomains) < 0) {
virReportOOMError();
goto cleanup;
}
/* First we pause all VMs to make them stop dirtying
pages, etc. We remember if any VMs were paused so
we can restore that on resume. */
for (i = 0 ; i < numDomains ; i++) {
flags[i] = VIR_DOMAIN_SAVE_RUNNING;
if (virDomainGetState(domains[i], &state, NULL, 0) == 0) {
if (state == VIR_DOMAIN_PAUSED) {
flags[i] = VIR_DOMAIN_SAVE_PAUSED;
}
}
virDomainSuspend(domains[i]);
}
ret = 0;
/* Then we save the VMs to disk */
for (i = 0 ; i < numDomains ; i++)
if (virDomainManagedSave(domains[i], flags[i]) < 0)
ret = -1;
VIR_FREE(domains);
VIR_FREE(flags);
cleanup:
for (i = 0 ; i < numDomains ; i++)
virDomainFree(domains[i]);
VIR_FREE(domains);
VIR_FREE(flags);
return ret;
}
/**
* qemuShutdown:
*
@ -14999,6 +15067,7 @@ static virStateDriver qemuStateDriver = {
.cleanup = qemuShutdown,
.reload = qemuReload,
.active = qemuActive,
.stop = qemuStop,
};
int qemuRegister(void) {