Thanks Marc for all the info. I will take a look to the links you have given me.
El jue, 08-11-2007 a las 08:35 +0100, Marc Grimme escribió: > Hi, > On Wednesday 07 November 2007 15:21:17 Jorge Cabello wrote: > > Hi all, > > > > I'm trying to use ocfs2 as the root filesystem for xen virtual nodes. If > > I leave ocfs2 as a module the system doesn't boot as it doesn't find a > > supported filesystem for the root partition. > > > > I have also tried to include ocfs2 inside the kernel (not as a module) > > on the virtual node to be able to mount the root partition but it also > > doesnt work. With this option I'm not even able to mount other > > partitions as o2cb doesn't find the module. > When the root filesystem gets mounted by the kernel or inside the initrd all > prerequisites to mount a that filesystem must be met. In case of cluster > filesystems like OCFS2 it gets a little bit more complicated compared to > local filesystems like ext3. That means before mounting you'll have to have a > cluster running which implicitly means having network up and having started > ocfs services properly. > This is not done within standard initrd. Even if you hardcompile the module > into the kernel the network does not get started and there is no cluster > configuration available in the kernel. All this and if done properly much > more must be done inside the initrd. > Have a look at > http://www.opensharedroot.org/documentation/description-on-the-open-sharedroot-bootprocess > > > > Has anyone been able to do something similar to this? Do I need to do > > anything special to include ocfs2 inside the kernel so I can mount the > > root partition at boot? > We've moved the root filesystem successfully onto GFS which is in this way > comparable to OCFS2 (see www.open-sharedroot.org). The question is not if it > works for XEN or not but if it works at all (but yes there need to be some > tweaks for getting XEN up and running I remember. If you like I can sort them > out again and tell you.). > > I've tried to use OCFS2 as root filesystem with that sharedroot concept some > month ago but had problems when using berkely db based software (rpm, > ldap, ..). That seems to be related to no shared mmaps being available at > that time. With a more recent kernel that should succeed 2.6.23-.. does have > the shared mmap support available I've heard. > > I hope that helps a bit. > _______________________________________________ Ocfs2-users mailing list [email protected] http://oss.oracle.com/mailman/listinfo/ocfs2-users
