[libvirt] [PATCH] qemuStateInitialize: Create qemu log directory

[Wangyufei (James)]

>From 51782a44eecf5801e5100920e5965d8dfc46e4cc Mon Sep 17 00:00:00 2001
From: Zhou Yimin <zhouyimin at huawei.com>
Date: Thu, 2 Jan 2014 16:32:46 +0800
Subject: [PATCH] qemuStateInitialize: Create qemu log directory

When an error occurred in qemuProcessStart before qemu log directory created,
it will fail to create qemu log file in  qemuProcessStop during
qemuProcessStart's cleanup phase. So when I start a VM whose PCI device not
exist, the last error will be overwrited as "failed to create logfile XXX:
No such file or directory" not the real reason "Device XXX not found:could not
access XXX: No such file or directory".
I fix it as following.

Signed-off-by: Zhou Yimin <zhouyimin at huawei.com>
Reviewed-by: Wang Yufei <james.wangyufei at huawei.com>
---
 src/qemu/qemu_driver.c  |    5 +++++
 src/qemu/qemu_process.c |   14 --------------
 2 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 45d11cd..ca3208e 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -615,6 +615,11 @@ qemuStateInitialize(bool privileged,
         goto error;
     VIR_FREE(driverConf);
 
+    if (virFileMakePath(cfg->logDir) < 0) {
+        VIR_ERROR(_("Failed to create log dir '%s': %s"),
+                  cfg->logDir, virStrerror(errno, ebuf, sizeof(ebuf)));
+        goto error;
+    }
     if (virFileMakePath(cfg->stateDir) < 0) {
         VIR_ERROR(_("Failed to create state dir '%s': %s"),
                   cfg->stateDir, virStrerror(errno, ebuf, sizeof(ebuf)));
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index d0fde54..0382c06 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -3737,13 +3737,6 @@ int qemuProcessStart(virConnectPtr conn,
         }
     }
 
-    if (virFileMakePath(cfg->logDir) < 0) {
-        virReportSystemError(errno,
-                             _("cannot create log directory %s"),
-                             cfg->logDir);
-        goto cleanup;
-    }
-
     VIR_DEBUG("Creating domain log file");
     if ((logfile = qemuDomainCreateLog(driver, vm, false)) < 0)
         goto cleanup;
@@ -4503,13 +4496,6 @@ int qemuProcessAttach(virConnectPtr conn ATTRIBUTE_UNUSED,
         driver->inhibitCallback(true, driver->inhibitOpaque);
     active = true;
 
-    if (virFileMakePath(cfg->logDir) < 0) {
-        virReportSystemError(errno,
-                             _("cannot create log directory %s"),
-                             cfg->logDir);
-        goto error;
-    }
-
     VIR_FREE(priv->pidfile);
     if (VIR_STRDUP(priv->pidfile, pidfile) < 0)
         goto error;
-- 
1.7.3.1.msysgit.0

Best Regards,
-WangYufei