[ovirt-devel] Re: oVirt on Fedora 28 status update

On Wed, Jan 30, 2019 at 10:39 PM Nir Soffer <nsoffer(a)redhat.com&gt; wrote: > Last time we discussed this here, we had only sanlock issue: > https://bugzilla.redhat.com/1593853 > > The bug was fixed upstream about 2 month ago, but the Fedora package was > not available. > > The package is not available yet in Fedora, but we have a build here: > https://koji.fedoraproject.org/koji/buildinfo?buildID=1182539 > > You can install sanlock from this build using: > > dnf upgrade > https://kojipkgs.fedoraproject.org//packages/sanlock/3.6.0/4.fc28/x86_64/... > \ > > https://kojipkgs.fedoraproject.org//packages/sanlock/3.6.0/4.fc28/x86_64/... > \ > > https://kojipkgs.fedoraproject.org//packages/sanlock/3.6.0/4.fc28/x86_64/... > > Hopefully the package will pushed soon to updates-testing repo. >

> With this you can use enable selinux as god intended. > > But if you update your host to kernel 4.20.4-100, multipath is broken. > All multipath devices > are not available, and your hosts will probably become non-operational > since they report the > iSCSI/FC storage domains in problem. > > The issue was reported here: > https://lkml.org/lkml/2018/11/5/398 > > And we have this Fedora 29 bug: > https://bugzilla.redhat.com/1669235 > The Fedora 28 bug (thanks Ben) https://bugzilla.redhat.com/1670966 > > > Ben explains it is: > > The kernel is switching over to use block multiqueue instead of the old > request > queue. Part of doing this is removing support for the old request queue > from device-mapper. Another part is to remove support for the old > request queue from the scsi layer. For some reason, the first part got > into this fedora kernel, but the second part didn't. It seems to me > that since the fedora kernel has removed support for non-blk-mq based > devices, > I should have been compiled with CONFIG_SCSI_MQ_DEFAULT=y > > > To fix this issue you need to add the scsi_mod.use_blk_mq=Y option to the > kernel command line: > > grubby --args=scsi_mod.use_blk_mq=Y --update-kernel > /boot/vmlinuz-4.20.4-100.fc28.x86_64 > > After reboot, your multipath devices will appear again. > > Cheers, > Nir >