[ovirt-users] Re: Reinstall without dataloss
Hi Strahil,
that worked in the end after some fiddling...
Installing a different kernel wasn't enough, apparently the bootloader
was not updated, until I create the grub2 bootloader again.
System is now up & running again, only shows degraded state...
Creating backups (ova) first, move them to another hypervisor and
let's see what the problem is
Op ma 27 sep. 2021 om 15:01 schreef Strahil Nikolov <hunter86_bg(a)yahoo.com>:
>
> Just take a CentOS DVD , select troubleshooting and then once you drop to a shell
-> you can mount /proc/ , /sys , /dev & /run with the bind option and chroot.
>
> Then just follow the procedure for your boot type EFI vs Legacy and recover the files
missing.
>
> Best Regards,
> Strahil Nikolov
>
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> В събота, 25 септември 2021 г., 12:41:27 ч. Гринуич+3, <hans(a)jiflin.nl>
написа:
>
>
>
>
>
> Hi all,
>
> I am new here, been searching the mailing list on a regular base when I encountered
problems and till now I always was able to keep the system up & running.
> As said... till now...
> I have oVirt at home, and I have about 7 vm's running on it. Lately I have had
some troubles with my electricity, which results in a complete power outage on a irregular
base.
> Yesterday I had a power outage which left the system unbootable with the following
errors:
>
> error: ../../grub-core/loader/i386/pc/linux.c:170:invalid magic number.
> error: ../../grub-core/loader/i386/pc/linux.c:1418:you need to load the kernel
first.
> Press any key to continue
>
> Normally this can be solved following https://access.redhat.com/solutions/5829141,
but his time also the files in /boot had a size of 0 bytes. So basically i did not have a
working kernel on the system anymore.
>
> https://www.thegeekdiary.com/centos-rhel-7-how-to-install-kernel-from-res...
does work for CentOS 8 also, but the ovirt 4.8 iso does not have the same directory
structure. Using CentOS 8 installs a kernel, but not a bootable system.
>
> Is there a way i can start the installer in troubleshooting mode so I can reinstall
just the kernel on the system?
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