Re: [PATCH] qemu: Obtain job before checking if domain is live

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On Tue, Jun 14, 2016 at 10:13:13AM +0200, Michal Privoznik wrote:
On 13.06.2016 15:33, Martin Kletzander wrote:
Since obtaining a job can wait for another job to finish, the state
might change in the meantime.  And checking it more than once is
pointless.

Signed-off-by: Martin Kletzander <mkletzan@xxxxxxxxxx>
---
 src/qemu/qemu_driver.c | 36 +++++++++++++++---------------------
 1 file changed, 15 insertions(+), 21 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index efb3f854fb10..e677440c20b2 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c


@@ -17942,15 +17936,15 @@ qemuDomainQemuAgentCommand(virDomainPtr domain,
     if (virDomainQemuAgentCommandEnsureACL(domain->conn, vm->def) < 0)
         goto cleanup;

+    if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+        goto cleanup;
+
     if (!virDomainObjIsActive(vm)) {
         virReportError(VIR_ERR_OPERATION_INVALID,
                        "%s", _("domain is not running"));
-        goto cleanup;
+        goto endjob;
     }

-    if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
-        goto cleanup;
-
     if (!qemuDomainAgentAvailable(vm, true))
         goto endjob;


There's another check for domain activeness just below this line. It can
be safely removed.


And the same thing happened in qemuDomainGetVcpusFlags(), so I fixed it
there as well and pushed.  Thanks.

ACK

Michal

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