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Add a new function doCoreDump 

This patch prepares for the next patch.
This commit is contained in:
Hu Tao 2010-12-08 14:19:12 +08:00 committed by Eric Blake
parent 482380b587
commit b4560bf2ef
1 changed files with 74 additions and 58 deletions
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132
src/qemu/qemu_driver.c
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@ -6030,6 +6030,78 @@ cleanup:
return ret;
}
static int doCoreDump(struct qemud_driver *driver,
virDomainObjPtr vm,
const char *path,
enum qemud_save_formats compress)
{
int fd = -1;
int ret = -1;
qemuDomainObjPrivatePtr priv;
priv = vm->privateData;
/* Create an empty file with appropriate ownership. */
if ((fd = open(path, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR)) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to create '%s'"), path);
goto cleanup;
}
if (VIR_CLOSE(fd) < 0) {
virReportSystemError(errno,
_("unable to save file %s"),
path);
goto cleanup;
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSavedStateLabel &&
driver->securityDriver->domainSetSavedStateLabel(driver->securityDriver,
vm, path) == -1)
goto cleanup;
qemuDomainObjEnterMonitorWithDriver(driver, vm);
if (compress == QEMUD_SAVE_FORMAT_RAW) {
const char *args[] = {
"cat",
NULL,
};
ret = qemuMonitorMigrateToFile(priv->mon,
QEMU_MONITOR_MIGRATE_BACKGROUND,
args, path, 0);
} else {
const char *prog = qemudSaveCompressionTypeToString(compress);
const char *args[] = {
prog,
"-c",
NULL,
};
ret = qemuMonitorMigrateToFile(priv->mon,
QEMU_MONITOR_MIGRATE_BACKGROUND,
args, path, 0);
}
qemuDomainObjExitMonitorWithDriver(driver, vm);
if (ret < 0)
goto cleanup;
ret = qemuDomainWaitForMigrationComplete(driver, vm);
if (ret < 0)
goto cleanup;
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSavedStateLabel &&
driver->securityDriver->domainRestoreSavedStateLabel(driver->securityDriver,
vm, path) == -1)
goto cleanup;
cleanup:
if (ret != 0)
unlink(path);
return ret;
}
static enum qemud_save_formats
getCompressionType(struct qemud_driver *driver)
{
@ -6064,13 +6136,10 @@ static int qemudDomainCoreDump(virDomainPtr dom,
struct qemud_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
int resume = 0, paused = 0;
int ret = -1, fd = -1;
int ret = -1;
virDomainEventPtr event = NULL;
enum qemud_save_formats compress;
qemuDomainObjPrivatePtr priv;
compress = getCompressionType(driver);
qemuDriverLock(driver);
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
@ -6092,26 +6161,6 @@ static int qemudDomainCoreDump(virDomainPtr dom,
goto endjob;
}
/* Create an empty file with appropriate ownership. */
if ((fd = open(path, O_CREAT|O_TRUNC|O_WRONLY, S_IRUSR|S_IWUSR)) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("failed to create '%s'"), path);
goto endjob;
}
if (VIR_CLOSE(fd) < 0) {
virReportSystemError(errno,
_("unable to save file %s"),
path);
goto endjob;
}
if (driver->securityDriver &&
driver->securityDriver->domainSetSavedStateLabel &&
driver->securityDriver->domainSetSavedStateLabel(driver->securityDriver,
vm, path) == -1)
goto endjob;
/* Migrate will always stop the VM, so the resume condition is
independent of whether the stop command is issued. */
resume = (vm->state == VIR_DOMAIN_RUNNING);
@ -6135,43 +6184,12 @@ static int qemudDomainCoreDump(virDomainPtr dom,
}
}
qemuDomainObjEnterMonitorWithDriver(driver, vm);
if (compress == QEMUD_SAVE_FORMAT_RAW) {
const char *args[] = {
"cat",
NULL,
};
ret = qemuMonitorMigrateToFile(priv->mon,
QEMU_MONITOR_MIGRATE_BACKGROUND,
args, path, 0);
} else {
const char *prog = qemudSaveCompressionTypeToString(compress);
const char *args[] = {
prog,
"-c",
NULL,
};
ret = qemuMonitorMigrateToFile(priv->mon,
QEMU_MONITOR_MIGRATE_BACKGROUND,
args, path, 0);
}
qemuDomainObjExitMonitorWithDriver(driver, vm);
if (ret < 0)
goto endjob;
ret = qemuDomainWaitForMigrationComplete(driver, vm);
ret = doCoreDump(driver, vm, path, getCompressionType(driver));
if (ret < 0)
goto endjob;
paused = 1;
if (driver->securityDriver &&
driver->securityDriver->domainRestoreSavedStateLabel &&
driver->securityDriver->domainRestoreSavedStateLabel(driver->securityDriver,
vm, path) == -1)
goto endjob;
endjob:
if ((ret == 0) && (flags & VIR_DUMP_CRASH)) {
qemudShutdownVMDaemon(driver, vm, 0);
@ -6204,8 +6222,6 @@ endjob:
}
cleanup:
if (ret != 0)
unlink(path);
if (vm)
virDomainObjUnlock(vm);
if (event)