maillists@gmail.com wrote:
dag, thanks for the article. I'm tempted to rebuild a 2.6.18 kernel
without
the patches that disable fs-cache. It's hard to tell if Redhat abandoned it because it was unstable or because it was too much trouble to maintain something they thought might never make the mainline kernel.
I believe the FS-Cache code wasn't removed from the RHEL 5.x kernels - it was just the fsc option that was disabled in the kernel mount options and also disabled in nfs-utils (mount.nfs) as well.
It would be quite easy to remove this kernel patch and rebuild a kernel (and rebuild nfs-utils, or use a version of mount.nfs from 5.2)- however, the FS-Cache code in these kernels is now quite old and very likely to be buggy - RedHat has not updated the kernel code to match the mainline kernels since 5.2
Personally, I would wait for CentOS 6 - but even then, FS-Cache is currently classed as a 'preview' technology in the RHEL 6.0 beta
James Pearson