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Bug 1144155 - Need no_timer_check in RHEL 7 cloud image
Summary: Need no_timer_check in RHEL 7 cloud image
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: rhel-guest-image
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: rc
: 7.1
Assignee: Ryan Barry
QA Contact: Virtualization Bugs
URL:
Whiteboard:
: 1152578 (view as bug list)
Depends On:
Blocks: 1147035
TreeView+ depends on / blocked
 
Reported: 2014-09-18 19:36 UTC by Ben Nemec
Modified: 2015-03-06 17:54 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Previously, if a guest image was run inside a nested virtual machine, the image automatically searched for a timing device. Consequently, the guest image sometimes became unresponsive when booting. With this update, the guest image is configured with the "no_timer_check" option, and now boots successfully in nested environments.
Clone Of:
: 1147035 (view as bug list)
Environment:
Last Closed: 2015-03-06 17:54:06 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:0648 0 normal SHIPPED_LIVE rhel-guest-image bug fix and enhancement update 2015-03-06 22:53:43 UTC

Description Ben Nemec 2014-09-18 19:36:16 UTC 
Description of problem: RHEL 7 cloud image hangs at boot when running nested.


Version-Release number of selected component (if applicable): rhel-guest-image-7.0-20140618.1.x86_64.qcow2


How reproducible: (Almost?) always.  I haven't had any success with this, but my understanding is that it doesn't fail 100% of the time.


Steps to Reproduce:
1. Boot a RHEL 7 vm using kvm
2. Attempt to boot a nested RHEL 7 vm using qemu inside the first vm

Actual results: Nested guest hangs at "...trying to set up timer as Virtual Wire IRQ..."


Expected results: Nested guest boots successfully


Additional info: The Fedora image with no_timer_check linked in https://bugzilla.redhat.com/show_bug.cgi?id=1082030 fixes this problem.  I believe the same fix should be applied to the RHEL 7 image.
Comment 2 yuliu 2014-09-23 03:35:18 UTC 
Is this required for RHEL image 6? If so, please clone it to guest-image-6.
Comment 3 Charles Crouch 2014-09-26 16:15:36 UTC 
That's a good point yuliu. This came up in our testing of OpenStack TripleO which we're only supporting for deployment onto RHEL7. But since this is a guest image issue, it would be nice to be able the run RHEL6 guest too.
Comment 4 Ben Nemec 2014-10-14 15:02:13 UTC 
*** Bug 1152578 has been marked as a duplicate of this bug. ***
Comment 6 yuliu 2015-01-27 05:29:40 UTC 
Version: rhel-guest-image-7.1-20150116.0

# cat /etc/grub2.cfg  |grep linux
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Red Hat Enterprise Linux Server 7.1 (Maipo), with Linux 3.10.0-223.el7.x86_64' --class fedora --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-223.el7.x86_64-advanced-b12636ea-0c7b-449f-a9da-169148783564' {
	linux16 /boot/vmlinuz-3.10.0-223.el7.x86_64 root=UUID=b12636ea-0c7b-449f-a9da-169148783564 ro crashkernel=auto console=tty0 console=ttyS0,115200n8 no_timer_check net.ifnames=0 LANG=en_US.UTF-8
...


Has "no_timer_check" in kernel command.
Verified as above.
Comment 8 errata-xmlrpc 2015-03-06 17:54:06 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0648.html
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