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Bug 1022402

Summary:	qemu-kvm: patch application failure
Product:	Red Hat Enterprise Linux 7	Reporter:	Florian Weimer <fweimer>
Component:	qemu-kvm	Assignee:	Miroslav Rezanina <mrezanin>
Status:	CLOSED NOTABUG	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.0	CC:	acathrow, hhuang, juzhang, virt-maint
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-10-24 10:16:36 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Florian Weimer 2013-10-23 08:32:12 UTC

A build of 6799d4487cf8a70b877ae8dcf3c44e399a9ca5ac / 1.5.3-10.el7 triggers this error:

Patch #37 (change-path-from-qemu-to-qemu-kvm.patch):
+ echo 'Patch #37 (change-path-from-qemu-to-qemu-kvm.patch):'
+ /usr/bin/cat /builddir/build/SOURCES/change-path-from-qemu-to-qemu-kvm.patch
+ /usr/bin/patch -p1 --fuzz=0
patching file os-posix.c
can't find file to patch at input line 25
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/redhat/qemu-kvm.spec.template b/redhat/qemu-kvm.spec.template
|index 84088eb..646eb1a 100644
--------------------------
File to patch: 
Skip this patch? [y] 
Skipping patch.
patching file ui/vnc.c

It doesn't result in a build failure because standard input is /dev/null on the builders, and GNU patch treats an EOF as "yes" in this context.  Nevertheless, such a partially applied patch cannot be a good thing.

Comment 2 Miroslav Rezanina 2013-10-24 10:16:36 UTC

This is expected behavior. Skipped chunk is spec file change that is applied directly to spec file and not process during prep phase of rpmbuild.

This is cause by using exploded git as source for patch file and has no effect to build result. If you check patch file mentioned in your error, chunk is empty in the patch file. It could be removed but we use this as reminder that spec file has been changed.