make delete-old

[Polytropon]

On Tue, 3 Mar 2020 18:34:39 +0300, Yuri Pankov wrote:
> On 03.03.2020 18:30, Polytropon wrote:
> > On Tue, 3 Mar 2020 18:16:37 +0300, Yuri Pankov wrote:
> >> On 03.03.2020 18:07, Polytropon wrote:
> >>> On Tue, 3 Mar 2020 17:13:50 +0300, Yuri Pankov wrote:
> >>>> On 03.03.2020 16:07, Robert Huff wrote:
> >>>>> tech-lists writes:
> >>>>>
> >>>>>>     Is a reboot required after make delete-old ?
> >>>>>
> >>>>> 	I don't think so.
> >>>>> 	But you might want to re-run ldconfig.
> >>>>
> >>>> I don't think delete-old deletes shared libraries (and that's the answer
> >>>> for original question, you don't need to reboot), there's
> >>>> delete-old-libs for that, more so, running ldconfig (the binary) can be
> >>>> harmful, if needed there's a ldconfig service; not sure which one you meant.
> >>>
> >>> According to /usr/src/Makefile's comment header, the
> >>> step "make delete-old" is followed by a reboot (in
> >>> combination with the 2nd mergemaster run, after
> >>> "make installworld"), while "make delete-old-libs"
> >>> is performed after the reboot, without a further one.
> >>>
> >>> In /usr/src/Makefile, you can find the following order:
> >>>
> >>> # For individuals wanting to upgrade their sources (even if only a
> >>> # delta of a few days):
> >>> #
> >>> #  1.  `cd /usr/src'       (or to the directory containing your source tree).
> >>> #  2.  `make buildworld'
> >>> #  3.  `make buildkernel KERNCONF=YOUR_KERNEL_HERE'     (default is GENERIC).
> >>> #  4.  `make installkernel KERNCONF=YOUR_KERNEL_HERE'   (default is GENERIC).
> >>> #       [steps 3. & 4. can be combined by using the "kernel" target]
> >>> #  5.  `reboot'        (in single user mode: boot -s from the loader prompt).
> >>> #  6.  `mergemaster -p'
> >>> #  7.  `make installworld'
> >>> #  8.  `mergemaster'            (you may wish to use -i, along with -U or -F).
> >>> #  9.  `make delete-old'
> >>> # 10.  `reboot'
> >>> # 11.  `make delete-old-libs' (in case no 3rd party program uses them anymore)
> >>>
> >>> Additional information from "man 7 build":
> >>>
> >>>        delete-old	      Delete obsolete base system files	and directories	inter-
> >>> 		      actively.	 When -DBATCH_DELETE_OLD_FILES is specified at
> >>> 		      the command line,	the delete operation will be non-in-
> >>> 		      teractive.  The variables	DESTDIR, TARGET_ARCH and
> >>> 		      TARGET should be set as with "make installworld".
> >>>
> >>>        delete-old-libs  Delete obsolete base system libraries interactively.
> >>> 		      This target should only be used if no third party	soft-
> >>> 		      ware uses	these libraries.  When
> >>> 		      -DBATCH_DELETE_OLD_FILES is specified at the command
> >>> 		      line, the	delete operation will be non-interactive.  The
> >>> 		      variables	DESTDIR, TARGET_ARCH and TARGET	should be set
> >>> 		      as with "make installworld".
> >>>
> >>> To conclude this into an answer that matches existing
> >>> documentation:
> >>>
> >>> Yes, "make delete-old" requires a reboot. :-)
> >>
> >> It's the 'installworld' (7) and 'mergemaster' (8) steps that require a
> >> reboot, and 'delete-old' (9) being immediately followed by 'reboot' (10)
> >> step does NOT mean 'delete-old' requires 'reboot'.
> > 
> > The documentation suggests that the "make delete-old" step
> > happens in single-user mode (which you entered in step 5).
> > So in this "limited mode", deleting libraries is safer than
> > doing this in a state where 3rd party programs might use
> > them (as it would typically happen in multi-user mode).
> > This whole setting is to make the process safer. So when
> > you do the "make delete-old" step in the setting it is
> > suggested for, i. e., in single-user mode, you'll have
> > to exit that mode, and the step the documentation uses
> > here is "reboot" (to make sure everything previously
> > installed by "make installworld") is in place during
> > a system startup; just using "exit" to continue into
> > multi-user mode doesn't sound convincing...
> 
> We are talking about delete-old which does NOT touch shared libraries, 
> and the original question was about that target only, everything else is 
> out of context.

Yes, this is correct; according to the description,
"make delete-old" will affect "obsolete base system files
and directories". While this does not explicitely include
libraries (as the description of "make delete-old-libs"
does), it is used in combination with the "make installworld"
step which warrants the reboot. So my interpretation is
that when you do "make delete-old", you have done
"make installworld" and "mergemaster" just before it,
and you are in single-user mode. That is the reason
of my conclusion that a reboot is, if not needed, at
least suggested if (!) you follow the procedure mentioned
in /usr/src/Makefile. Of course, if you already are in
multi-user mode, _not_ having done "make delete-old"
in single-user mode (where you did all the other steps),
then, yes, I agree, a reboot should not be needed, as
all things installed new are already in place and therefore
also in use, as it should be.



-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...