[CentOS] Strange issue with CentOS7 on XenServer

[Fabian Arrotin]

On 21/09/17 16:44, Todor Petkov wrote:
> Hello,
> 
> I stumbled upon a strange problem with CentOS upgrade on XenServer
> environment, and I would like to ask if someone has this issue as
> well:
> 
> XenServer 7.1, the VM is CentOS7, with kernel
> 3.10.0-514.26.2.el7.x86_64 running in PV mode
> When I upgrade the kernel (running with yum update kernel), after
> reboot in the VM console it says "dracut-pre-udev[212]: modprobe:
> ERROR: could not insert 'dm-mod': Cannot allocate memory" and after a
> while it drops to dracut shell
> 
> If I boot from from an old kernel with the updated kexec-tools/dracut,
> it's fine.
> 
> Anyone experiencing this issue?
> 
> Regards,

Yes, and it's listed in the Release Notes
(https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7#head-281c090cc4fbc6bb5c7d4cd82a266fce807eee7c)
....

So you can't run in PV mode with the 7.4.1708 kernel, but you can use
the centosplus kernel, which has the added patch/config.

-- 
Fabian Arrotin
The CentOS Project | http://www.centos.org
gpg key: 56BEC54E | twitter: @arrfab

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: OpenPGP digital signature
URL: <http://lists.centos.org/pipermail/centos/attachments/20170921/a87ca315/attachment.sig>