Ken Moffat wrote: > On Sat, Jun 16, 2012 at 05:00:08PM -0500, Bruce Dubbs wrote: >> Bryan Kadzban wrote: >> >> I looked at the .config and I do have >> >> CONFIG_SYSFS_DEPRECATED=y >> CONFIG_SYSFS_DEPRECATED_V2=y >> >>> (Upstream, for the record, says that newer kernels will work with older >>> udev versions, but not the other way around. Makes a large upgrade >>> easy, right? :-/ ) > FWIW, on my server running LFS-6.8 (udev-166) I have both of those > config options selected.
Hmm, maybe we're looking at the wrong thing, then, and the only upgrade required would be to the kernel, keeping SYSFS_DEPRECATED turned on? I haven't tried that, but if it works, it would be a valid upgrade path -- upgrade the kernel, keep the deprecated layout, upgrade udev, then rebuild the kernel without the deprecated layout. > (I was > coming from a very old clfs build - stuck for a long time on the > various libata changes, which gave problems with my add-in PCI->IDE > cards on the previous machine - and forgot I needed to change that.) > Fixed by enabling DEVTMPFS which I believe we now require anyway. The libata changes were handled for me because I had moved to using the persistent by-id symlink names in fstab. (Which is why the discussion on systemd-devel about "oh you can just use mdev!" is so misguided. It doesn't do those symlinks.) I'm pretty sure that any of by-id, by-uuid, or by-path should work with both libata and pre-libata kernel drivers. Of course, it's possible that more-current udev or kernel versions (after whichever ones I was using when I enabled libata many years ago) have changed the links that you get for libata devices, in a misguided attempt to make people upgrade... Anyway, if the problem is what I think it is, then DEVTMPFS won't actually help there; you'll still see a change from /dev/hdX to /dev/sdX that the scripts have to deal with. So maybe the problem isn't what I think it is. :-)
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