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,
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-0001.sig>
On Thu, Sep 21, 2017 at 5:55 PM, Fabian Arrotin <arrfab at centos.org> wrote:> 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 > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >Thanks, I missed this one.