Bug 841050 - Updating from RHEL 6.2 to 6.3 overwrites KSM config files without warning
Updating from RHEL 6.2 to 6.3 overwrites KSM config files without warning
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm (Show other bugs)
All Linux
high Severity high
: rc
: ---
Assigned To: Michal Novotny
Virtualization Bugs
Depends On:
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Reported: 2012-07-17 21:21 EDT by David Kovalsky
Modified: 2014-07-01 08:01 EDT (History)
9 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2012-08-08 09:34:58 EDT
Type: Bug
Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description David Kovalsky 2012-07-17 21:21:04 EDT
I've upgraded a KVM host machine from 6.2 to 6.3 and come to notice that /etc/sysconfig/ksm and /etc/ksmtuned.conf were back at their defaults.

No warning, no .rpmnew/.rpmold files creaed. 

Overwriting root config files is bad from user PoV, KSM config files should be marked as %config(noreplace)

Comment 1 Suqin Huang 2012-07-18 22:14:20 EDT
Hi David,

I don't think this is qemu-kvm bug, change component to kernel.

Comment 2 David Kovalsky 2012-07-19 05:38:35 EDT
I believe it is qemu-kvm, RPM thinks the same :)

# rpm -qf /etc/ksmtuned.conf

# rpm -qf /etc/sysconfig/ksm 

To be clear, I haven't checked the specfile, but I believe this is a packaging bug in qemu-kvm specfile.
Comment 3 Ademar Reis 2012-07-27 10:03:41 EDT
I checked the .spec file and both files are marked %config(noreplace) there since the package was imported into RHEL6, so this shouldn't happen.

Can someone from QE please try to reproduce it?

Testcase is simple:
 - install RHEL6.2
 - change something in the /etc/ksmtuned.conf and /etc/sysconfig/ksm files
 - upgrade to RHEL6.3
 - check if the files have been ovewritten and there are no .rpmsave or .rpmnew files

Maybe it's an installer bug?
Comment 4 Suqin Huang 2012-08-08 01:25:00 EDT
Hi Devid,
I can not reproduce this bug.

1). edit /etc/ksmtuned.conf and /etc/sysconfig/ksm
2). update qemu-kvm- to qemu-kvm-
    or update all packages from rhel6.2 to rhel6.3

ksmtuned.conf and ksm is not overwritten, it keep the same as the one before update.

if I remove old qemu-kvm and install new one, .rpmsave will be created
Comment 5 Ademar Reis 2012-08-08 09:34:58 EDT
- both files are marked %config(noreplace)
- QE couldn't reproduce it

If you reproduce it, please reopen this bug and let us know how to reproduce it.

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