Re: [Users] Pxeboot

Ok, I built an iso out of archipel and pxebooted it with stateless option. Now I got a "localhost" login prompt. Any idea what should I put in as user/pwd? David

>-----Original Message----- >From: Mike Burns [mailto:mburns@redhat.com] >Sent: Wednesday, February 08, 2012 4:31 PM >To: Li, David >Cc: Perry Myers; users(a)ovirt.org >Subject: RE: [Users] Pxeboot > >On Wed, 2012-02-08 at 15:43 -0800, Li, David wrote: >> Ok, I think we are on the same page now regarding stateless node. It >> looks like the achipel diff you just pulled in might be able to do >> this. But I can't quite make it out what the kernel option should be. >> Is it "stateless=1"? >> > >stateless=1 or just stateless, both will work. > > >> David >> >> >-----Original Message----- >> >From: Mike Burns [mailto:mburns@redhat.com] >> >Sent: Wednesday, February 08, 2012 3:27 PM >> >To: Li, David >> >Cc: Perry Myers; users(a)ovirt.org >> >Subject: Re: [Users] Pxeboot >> > >> >On Wed, 2012-02-08 at 15:19 -0800, Li, David wrote: >> >> Perry, >> >> >> >> I am glad you brought this up. >> >> I 'd be perfectly happy to run the root fs entirely in RAM. In fact >> >> that would >> >be ideal for me. It's just I am not quite sure how to use pxeboot to >> >achieve this. >> >> >> >> I am doing a test now using the tftpboot files created from the iso. >> >> As far as I see, the kernel boot options (pxelinux.cfg/default) has: >> >> >> >> root=live:/ovirt-node-image-2.2.2-1.1.fc16.iso >> >> >> >> With this I can only pxeboot to the intall screen. What should I >> >> use to let the >> >kernel mount the root fs in memory? Something like root=/dev/ram0? >> >> >> >> David >> > >> >It's not currently possible with ovirt-node. That's the whole >> >stateless feature that we outlined. Once we actually have it >> >implemented, it will be something along the lines of adding "stateless" to >the kernel commandline. >> > >> >Mike >> >> >> >> >> >> >-----Original Message----- >> >> >From: Perry Myers [mailto:pmyers@redhat.com] >> >> >Sent: Wednesday, February 08, 2012 2:54 PM >> >> >To: Mike Burns >> >> >Cc: Li, David; users(a)ovirt.org >> >> >Subject: Re: [Users] Pxeboot >> >> > >> >> >On 02/08/2012 05:03 PM, Mike Burns wrote: >> >> >> On Wed, 2012-02-08 at 13:46 -0800, Li, David wrote: >> >> >>> Mike, >> >> >>> >> >> >>> If I understand this correctly, today I should be able to >> >> >>> pxeboot and nfs mount the root fs from a remote server. Apart >> >> >>> from setting up the pxe stuff, I 'd have to populate the ovirt >> >> >>> node root fs on the server >> >> >>> - perhaps steal it from a disk install. In other words I am >> >> >>> concerned about the point from which the kernel starts to >> >> >>> execute /init script (in the initramfs) to the point /init is >> >> >>> able to mount the final root fs from a remote server. >> >> >> >> >> >> No, there is no way to set this up currently in ovirt-node. You >> >> >> could install using a remote iscsi lun if you have a hardware >> >> >> iscsi HBA, but there isn't a way to mount a remote nfs share as the >root fs. >> >> >> >> >> >> Supporting a remote NFS share as the root fs isn't even >> >> >> something that requested as an RFE at this point or on the >> >> >> roadmap as far as I'm aware. >> >> >> >> >> >> It sounds like what you're really looking for is a shared root >> >> >> fs that multiple hosts could use. This is something that we >> >> >> will probably look into eventually, but it's not on the immediate >roadmap. >> >> > >> >> >Given that the rootfs of oVirt Node is fairly small and in a truly >> >> >stateless environment would just run out of system RAM, there's no >> >> >real reason to try to do a shared NFS based rootfs. It's an >> >> >unnecessary complication I think, if the end goal is to move to >> >> >truly >> >stateless. >> >> > >> >> >For larger systems where the rootfs is on the order of GB's, >> >> >shared root may make more sense. >> >> _______________________________________________ >> >> Users mailing list >> >> Users(a)ovirt.org >> >> http://lists.ovirt.org/mailman/listinfo/users >> > >> > _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users