[kernel-xen] Xen 4.1 and latest CentOS 7.2.1511

Tue Dec 29 13:20:14 AEDT 2015

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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