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[Qemu-devel] [PATCH] Fix Event Viewer errors caused by qemu-ga
From: |
Sameeh Jubran |
Subject: |
[Qemu-devel] [PATCH] Fix Event Viewer errors caused by qemu-ga |
Date: |
Tue, 21 Mar 2017 12:49:52 +0200 |
When the command "guest-fsfreeze-freeze" is executed it causes
the VSS service to log the errors below in the Event Viewer.
These errors are caused by two issues in the function "CommitSnapshots" in
provider.cpp:
1. When VSS_TIMEOUT_MSEC expires the funtion returns E_ABORT. This causes
the error #12293.
2. The VSS_TIMEOUT_MSEC value is too big. According to msdn the
"Flush & Hold" operation has 10 seconds timeout not configurable, The
"CommitSnapshots" is a part of the "Flush & Hold" process and thus any
timeout bigger than 10 seconds would cause the error #12298 and anything
bigger than 40 seconds causes the error #12340. All this info can be found here:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa384589(v=vs.85).aspx
|event id| error |
* 12293 : Volume Shadow Copy Service error: Error calling a routine on a
Shadow Copy Provider {00000000-0000-0000-0000-000000000000}.
Routine details CommitSnapshots [hr = 0x80004004, Operation
aborted.
* 12340 : Volume Shadow Copy Error: VSS waited more than 40 seconds for
all volumes to be flushed. This caused volume
\\?\Volume{62a171da-32ec-11e4-80b1-806e6f6e6963}\ to timeout
while waiting for the release-writes phase of shadow copy
creation. Trying again when disk activity is lower may solve
this problem.
* 12298 : Volume Shadow Copy Service error: The I/O writes cannot be held
during the shadow copy creation period on volume
\\?\Volume{62a171d9-32ec-11e4-80b1-806e6f6e6963}\. The volume
index in the shadow copy set is 0. Error details:
Open[0x00000000, The operation completed successfully. ],
Flush[0x00000000, The operation completed successfully.],
Release[0x00000000, The operation completed successfully.],
OnRun[0x80042314, The shadow copy provider timed out while
holding writes to the volume being shadow copied. This is
probably due to excessive activity on the volume by an
application or a system service. Try again later when activity
on the volume is reduced.
Signed-off-by: Sameeh Jubran <address@hidden>
---
qga/vss-win32/provider.cpp | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/qga/vss-win32/provider.cpp b/qga/vss-win32/provider.cpp
index ef94669..d72f4d4 100644
--- a/qga/vss-win32/provider.cpp
+++ b/qga/vss-win32/provider.cpp
@@ -15,7 +15,7 @@
#include <inc/win2003/vscoordint.h>
#include <inc/win2003/vsprov.h>
-#define VSS_TIMEOUT_MSEC (60*1000)
+#define VSS_TIMEOUT_MSEC (9 * 1000)
static long g_nComObjsInUse;
HINSTANCE g_hinstDll;
@@ -377,7 +377,6 @@ STDMETHODIMP CQGAVssProvider::CommitSnapshots(VSS_ID
SnapshotSetId)
if (WaitForSingleObject(hEventThaw, VSS_TIMEOUT_MSEC) != WAIT_OBJECT_0) {
/* Send event to qemu-ga to notify the provider is timed out */
SetEvent(hEventTimeout);
- hr = E_ABORT;
}
CloseHandle(hEventThaw);
--
2.9.3
- [Qemu-devel] [PATCH] Fix Event Viewer errors caused by qemu-ga,
Sameeh Jubran <=