On 1/3/19 10:40 PM, Kevin Oberman wrote: > On Wed, Jan 2, 2019 at 5:02 PM Robert Huff <roberth...@rcn.com> wrote: > >> >> John Baldwin writes: >> >>> -  In order to have a kernel that can run the 4.x binaries needed >> to >>> - do an installworld, you must include the COMPAT_FREEBSD4 option in >>> - your kernel. Failure to do so may leave you with a system that is >>> - hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is >>> - required to run the 5.x binaries on more recent kernels. And so on >>> - for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. >>> +  The new kernel must be able to run existing binaries used by >>> + an installworld. When upgrading across major versions, the new >>> + kernel's configuration must include the correct COMPAT_FREEBSD<n> >>> + option for existing binaries (e.g. COMPAT_FREEBSD11 to run 11.x >>> + binaries). Failure to do so may leave you with a system that is >>> + hard to boot to recover. A GENERIC kernel will include suitable >>> + compatibility options to run binaries from older branches. >> >> Maybe not perfect, but _much_ better. >> Thanks. >> >> >> Respectfully, >> >> >> Robert Huff >> > Some ports may require compat ports. E.g. plexmediaserver requires > compat9x. Oddly, compat9x requires compat10x, so I need 9, 10, and 11. > > Now that 10 is EOL, I wish Plex would start building their blobs against 11.
While that is true, that isn't quite relevant to this note which is specific to the buildworld + installworld upgrade process. In general COMPAT_FREEBSD<n> and the compat<N>x packages require all the newer compat options and packages when you are more than 1 branch away from the running system. That is, to run 9.x binaries on a 12.0 kernel you need COMPAT_FREEBSD9, COMPAT_FREEBSD10, and COMPAT_FREEBSD11. The same can be true of compat packages except that you only need to step up to whatever the verison of your userland binaries are. If you had a 9.x jail on a 12.0 host you wouldn't need any compat packages, just the kernel options. For a 10.x jail on a 12.0 host you would only need compat9x, etc. -- John Baldwin _______________________________________________ email@example.com mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"