[kernel-xen] Xen 4.1 and latest CentOS 7.2.1511

Steven Haigh netwiz at crc.id.au
Tue Dec 29 14:46:53 AEDT 2015


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
>>>>
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>>
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