[kernel-xen] Xen 4.1 and latest CentOS 7.2.1511

Tue Dec 29 16:35:24 AEDT 2015

Steven,

You’re the man! 

I did a clean install and once I weeded through the testing repo showing nothing, I was able to install it all.

I rebooted and it seems to be up and working.

For the time being, I added exclude=kernel-xen* to /etc/yum.conf so I don’t have to worry about it being overwritten for now.

How long before this moves from testing to production?

Thank you,
Steffan Cline
602-793-0014

On 12/28/15, 9:35 PM, "Steven Haigh" <kernel-xen-bounces at lists.wireless.org.au on behalf of netwiz at crc.id.au> wrote:

>I can confirm that 4.1.15-3.2 fixes the issue.
>
># cat /proc/version
>Linux version 4.1.15-3.2.el7xen.x86_64 (mockbuild at dev.crc.id.au) (gcc
>version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) ) #1 SMP Tue Dec 29
>14:33:13 AEDT 2015
>
>It's now available in for both EL6 & EL7 in the -testing repos.
>
>I'd also recommend that if your host doesn't need any custom compiled
>modules that you enable "enforcemodulesig=1" on your kernel command
>line. This will ensure that only correctly signed modules are able to be
>loaded into a running system.
>
>This has been implemented for both EL6 & EL7 packages.
>
>--
>Steven Haigh
>
>Email: netwiz at crc.id.au
>Web: https://www.crc.id.au
>Phone: (03) 9001 6090 - 0412 935 897
>
>On 29/12/2015 2:46 PM, Steven Haigh wrote:
>> As per your bug report, I may have found the solution.
>> 
>> http://xen.crc.id.au/bugs/view.php?id=65
>> 
>> I believe the requirement for the new systemd packages released
>> on/around the 26th of this month require CONFIG_FHANDLE set in the kernel.
>> 
>> As most people installed 4.1.15-1 *before* this update to systemd, those
>> installs are still working. I believe that updates *after* the systemd
>> update will fail.
>> 
>> Hold fire and see if you can test 4.1.15-3.2 when it hits the
>> el7-testing repo and see if that fixes the problems we're both seeing now.
>> 
>> --
>> Steven Haigh
>> 
>> Email: netwiz at crc.id.au
>> Web: https://www.crc.id.au
>> Phone: (03) 9001 6090 - 0412 935 897
>> 
>> On 29/12/2015 2:36 PM, Steffan Cline wrote:
>>> No dice for me with -1. I'll wipe clean and try again in case something is hosed from -2
>>>
>>> It too gets stuck at dracut 
>>>
>>>
>>>
>>> Thanks,
>>> Steffan Cline
>>> steffan at hldns.com
>>> 602-793-0014
>>>
>>>> On Dec 28, 2015, at 7:20 PM, Steven Haigh <netwiz at crc.id.au> wrote:
>>>>
>>>> Hmm - I've noticed that 4.1.15-3.1 in el7-testing gives me the same...
>>>>
>>>> Have you tried 4.1.15-1? This works properly in EL7 for me - however it
>>>> seems something has happened with either other updates - or in the
>>>> changes I've made between 4.1.15-1 and 4.1.15-2.
>>>>
>>>> I have updated to 4.1.15-3.1 in an EL7 Xen DomU, and I get this on boot:
>>>> [ ***  ] A start job is running for dev-xvda.device (3min 15s / no limit)
>>>>
>>>> Back in the old days, this would be easy to debug - however I'm not sure
>>>> how to get systemd to play along and figure out the problem here.
>>>>
>>>> It seems because /dev/xvda (in my case) isn't 'starting', it doesn't log
>>>> anything, and I can't seem to get to a shell.
>>>>
>>>> --
>>>> Steven Haigh
>>>>
>>>> Email: netwiz at crc.id.au
>>>> Web: https://www.crc.id.au
>>>> Phone: (03) 9001 6090 - 0412 935 897
>>>>
>>>>> On 29/12/2015 1:09 PM, Glenn Enright wrote:
>>>>> It might be possible the step 4 broke something in your installs. It
>>>>> might even be as simple as the grub configuration being messed up.
>>>>>
>>>>> Consider purging and then reinstalling kernel-xen packages? eg...
>>>>>
>>>>> yum remove kernel-xen*
>>>>> yum clean all
>>>>> grub2-set-default 0
>>>>> yum install kernel-xen kernel-xen-firmware
>>>>>
>>>>> Regards, Glenn
>>>>> http://ri.mu - Startups start here.
>>>>> Hosting. DNS. Web Programming. Email. Backups. Monitoring.
>>>>>
>>>>>> On 29/12/15 13:21, Steffan Cline wrote:
>>>>>> Steve,
>>>>>>
>>>>>> Here is how I had installed it.
>>>>>>
>>>>>> 1) Installed CentOS 7 from an image I had
>>>>>> 2) Installed Cloudmin which did this: (from an excerpt of
>>>>>> http://cloudmin.virtualmin.com/gpl/scripts/cloudmin-gpl-redhat-install.sh)
>>>>>>
>>>>>> --------------------------------------------------
>>>>>> # Enable Xen kernels repo, if on CentOS 6
>>>>>> yum info kernel-xen >/dev/null 2>&1
>>>>>> if [ "$?" != 0 ]; then
>>>>>>    echo Enabling Xen kernel repo for CentOS 6 ..
>>>>>>    yum install wget
>>>>>>    yum install
>>>>>> http://au1.mirror.crc.id.au/repo/kernel-xen-release-6-5.noarch.rpm
>>>>>>    if [ "$?" != 0 ]; then
>>>>>>        echo .. repo install failed
>>>>>>        exit 1
>>>>>>    fi
>>>>>>    echo .. done
>>>>>>    echo ""
>>>>>> fi
>>>>>>
>>>>>>
>>>>>> # YUM install Perl, modules and other dependencies
>>>>>> echo Installing required Perl modules using YUM ..
>>>>>> yum install -y perl openssl perl-Net-SSLeay vixie-cron bind bind-utils
>>>>>> kernel-xen kernel-xen-devel xen xen-libs lsof perl-Data-Dumper
>>>>>> if [ "$?" != 0 ]; then
>>>>>>    echo .. install failed
>>>>>>    exit 1
>>>>>> fi
>>>>>> yum install -y perl-JSON
>>>>>> yum install -y dhcp
>>>>>> yum install -y openssh-clients
>>>>>> echo .. done
>>>>>> echo ""
>>>>>>
>>>>>> ————————————————————————
>>>>>> 3) Did a reboot, all was well using the Xen kernel
>>>>>> vmlinuz-4.1.15-2.el7xen.x86_64.
>>>>>>
>>>>>> 4) Did a yum update, all seemed ok, rebooted and ended up in the new
>>>>>> CentOS kernel.
>>>>>>
>>>>>> 5) Changed it back using grub2-set-default 2 (which was the xen kernel)
>>>>>>
>>>>>> 6) Reboot - stuck in dracut.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Thank you,
>>>>>> Steffan Cline
>>>>>> 602-793-0014
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 12/28/15, 5:07 PM, "Steven Haigh"
>>>>>> <kernel-xen-bounces at lists.wireless.org.au on behalf of
>>>>>> netwiz at crc.id.au> wrote:
>>>>>>
>>>>>>> Is this using the kernel-xen package as a Dom0, DomU or on bare metal?
>>>>>>>
>>>>>>>> On 29/12/15 07:20, Steffan Cline wrote:
>>>>>>>> If you figure it out, please let us know. I have several hours into it.
>>>>>>>>
>>>>>>>> I have 4 dead Dell R610 hosts until I figure out what to do about this.
>>>>>>>>
>>>>>>>> Sadly I must keep going until I figure it out.
>>>>>>>>
>>>>>>>> Thank you,
>>>>>>>> Steffan Cline
>>>>>>>> 602-793-0014
>>>>>>>>
>>>>>>>>
>>>>>>>> From: <kernel-xen-bounces at lists.wireless.org.au
>>>>>>>> <mailto:kernel-xen-bounces at lists.wireless.org.au>> on behalf of
>>>>>>>> Christiaan den Besten <chris at prolocation.net
>>>>>>>> <mailto:chris at prolocation.net>>
>>>>>>>> Reply-To: Xen Dom0 kernel for EL6 <kernel-xen at lists.wireless.org.au
>>>>>>>> <mailto:kernel-xen at lists.wireless.org.au>>
>>>>>>>> Date: Monday, December 28, 2015 at 12:36 PM
>>>>>>>> To: Xen Dom0 kernel for EL6 <kernel-xen at lists.wireless.org.au
>>>>>>>> <mailto:kernel-xen at lists.wireless.org.au>>
>>>>>>>> Subject: Re: [kernel-xen] Xen 4.1 and latest CentOS 7.2.1511
>>>>>>>>
>>>>>>>> Hi Steffan!
>>>>>>>>
>>>>>>>> Wont help you right away, but i had the same issue with a freshly
>>>>>>>> installed system last night.
>>>>>>>>
>>>>>>>> So this will probably influence others as well if they would update.
>>>>>>>>
>>>>>>>> Haven't started troubleshooting just yet ...
>>>>>>>>
>>>>>>>> bye,
>>>>>>>> Chris
>>>>>>>>
>>>>>>>> On 28 dec. 2015, at 20:18, Steffan Cline <steffan at hldns.com
>>>>>>>> <mailto:steffan at hldns.com>> wrote:
>>>>>>>>
>>>>>>>>> dracut keeps stopping at “A start job is running for
>>>>>>>>> dev-maps…\x2root.device (XXs / no limit)”
>>>>>>>>>
>>>>>>>>> A couple times I was able to hit the emergency shell still though, not
>>>>>>>>> sure what to do from there.
>>>>>>>>>
>>>>>>>>> I’ve read up on this and everything says it’s an issue with initramfs.
>>>>>>>>> I have redone it a few times now and no change.
>>>>>>>>>
>>>>>>>>> Bit of a problem. Have a dead host.
>>>>>>>>>
>>>>>>>>> Suggestions?
>>>>>>>>>
>>>>>>>>> Thank you,
>>>>>>>>> Steffan Cline
>>>>>>>>> 602-793-0014
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> From: <kernel-xen-bounces at lists.wireless.org.au
>>>>>>>>> <mailto:kernel-xen-bounces at lists.wireless.org.au>> on behalf of
>>>>>>>>> Steffan Cline <steffan at hldns.com <mailto:steffan at hldns.com>>
>>>>>>>>> Reply-To: Xen Dom0 kernel for EL6 <kernel-xen at lists.wireless.org.au
>>>>>>>>> <mailto:kernel-xen at lists.wireless.org.au>>
>>>>>>>>> Date: Monday, December 28, 2015 at 12:01 AM
>>>>>>>>> To: <kernel-xen at lists.wireless.org.au
>>>>>>>>> <mailto:kernel-xen at lists.wireless.org.au>>
>>>>>>>>> Subject: [kernel-xen] Xen 4.1 and latest CentOS 7.2.1511
>>>>>>>>>
>>>>>>>>> I was using the kernel-xen-4.1.15-2.el7xen.x86_64.rpm with CentOS 7
>>>>>>>>> but after the update to 7.2.511 I can’t get past dracut.
>>>>>>>>>
>>>>>>>>> I have regenerated grub.cfg and the initramfs file but it still gets
>>>>>>>>> stuck.
>>>>>>>>>
>>>>>>>>> I’ve reached the limits of my skill set. Anyone have any suggestions?
>>>>>>>
>>>>>>> -- 
>>>>>>> Steven Haigh
>>>>>>>
>>>>>>> Email: netwiz at crc.id.au
>>>>>>> Web: https://www.crc.id.au
>>>>>>> Phone: (03) 9001 6090 - 0412 935 897
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> kernel-xen mailing list
>>>>>>> kernel-xen at lists.wireless.org.au
>>>>>>> https://lists.wireless.org.au/mailman/listinfo/kernel-xen
>>>>>>
>>>>>> _______________________________________________
>>>>>> kernel-xen mailing list
>>>>>> kernel-xen at lists.wireless.org.au
>>>>>> https://lists.wireless.org.au/mailman/listinfo/kernel-xen
>>>>> _______________________________________________
>>>>> kernel-xen mailing list
>>>>> kernel-xen at lists.wireless.org.au
>>>>> https://lists.wireless.org.au/mailman/listinfo/kernel-xen
>>>>
>>>> _______________________________________________
>>>> kernel-xen mailing list
>>>> kernel-xen at lists.wireless.org.au
>>>> https://lists.wireless.org.au/mailman/listinfo/kernel-xen
>>> _______________________________________________
>>> kernel-xen mailing list
>>> kernel-xen at lists.wireless.org.au
>>> https://lists.wireless.org.au/mailman/listinfo/kernel-xen
>>>
>> 
>> 
>> 
>> _______________________________________________
>> kernel-xen mailing list
>> kernel-xen at lists.wireless.org.au
>> https://lists.wireless.org.au/mailman/listinfo/kernel-xen
>> 
>
>_______________________________________________
>kernel-xen mailing list
>kernel-xen at lists.wireless.org.au
>https://lists.wireless.org.au/mailman/listinfo/kernel-xen