> > From: [email protected] (mailto:[email protected]) > <[email protected] (mailto:[email protected])> on behalf of Allen > Belletti <[email protected] (mailto:[email protected])> > Sent: Wednesday, October 02, 2013 4:40 PM > To: [email protected] (mailto:[email protected]) > Subject: [Users] Customizing node configuration > > Hello All, > > I've been searching the archives and not yet managed to find anything on the > subject, so I'm hoping that someone can point me in the right direction. > > I am using nodes with Intel 10G network cards. The driver for these cards has > been tweaked to complain (and fail to start the interface) if a non-Intel > approved optical transceiver is in use. It's easy to override with the > following options: > > ixgbe.allow_unsupported_sfp=1 > > The usual ways of doing this are either to place it on the kernel command > line at boot time, or in /etc/modprobe.d/ixgbe.conf where it would read > "options ixgbe allow_unsupported_sfp=1". Unfortunately I have no idea how to > make either of these permanent on an oVirt node. > > I'm running the ovirt-node-iso-3.0.1-1.0.2.vdsm.el6.iso image. It has an > /etc/modprobe.d directory where changes do not persist across reboots. It > also has /config/etc where I've added modprobe.d and modprobe.d/ixgbe.conf. > By adding this file to /config/files, I've been able to make it appear in > /etc/modprobe.d at boot time. This has no effect. It appears to take place > after the ixgbe driver has already been started. If I "rmmod ixgbe" and > "modprobe ixgbe" manually, it works fine. > > So the general question is, how do I make configuration changes which persist > across reboots? Surely others have run into the same situation when trying to > support specific devices. > rc.local is probably the easiest way for now. There's a patch at http://gerrit.ovirt.org/#/c/19811/1 which gives us the ability to arbitrarily modify boot loader arguments, but I'm not sure that we have any plans to add a field in the TUI to do so, though it may be a good idea, since this is coming up more and more often.
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