On Sat, 1 May 2010, maillists0 at gmail.com wrote: > On Sat, May 1, 2010 at 4:37 PM, Akemi Yagi <amyagi at gmail.com> wrote: > >> On Sat, May 1, 2010 at 1:28 PM, <maillists0 at gmail.com> wrote: >>> I want to upgrade a 5.4 box with the 2.618 kernel to a shiny new 2.6.32 >>> kernel. Anyone done it? Is it possible? Are there gotcha's to watch out >> for? >>> >>> Any advice is appreciated. A link to a decent howto would be awesome. >> >> You did not tell us why you want to run 2.6.32 on CentOS 5.4. I assume >> you are aware of backporting and 2.6.18 is not the same as vanilla >> kernel 2.6.18. >> >> Having said that, if you really, really need to run/build such a new >> kernel, I advice you read through this CentOS forum thread in its >> entirety: >> >> >> https://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&topic_id=23627&forum=37 >> > > Thanks, Akemi. I really want to try the fs-cache feature to make an nfs > caching proxy. It would be a godsend. > > I was wondering whether the standard "make oldconfig" would work when making > a version jump this large. Are my drivers likely to break? RHEL5 actually used to ship FS-Cache as part of their 2.6.18 kernel. You can find an interesting article on LWN about this: http://lwn.net/Articles/312708/ It used to be a technology preview up to 5.2, but I think it disappeared in the release notes of 5.3. And there is a bugzilla entry on to why: https://bugzilla.redhat.com/show_bug.cgi?id=481579 Since FS-Cache was not mainlined, I think Red Hat ditched the idea of making it a supported option for the remaining 5 years of RHEL5. I guess testing with RHEL6 beta and then moving to CentOS 6 eventually is the safest option for production use. -- -- dag wieers, dag at wieers.com, http://dag.wieers.com/ -- [Any errors in spelling, tact or fact are transmission errors]