On 2011/11/21 at 02:10, Alexander Best arun...@freebsd.org wrote:
On Sun Nov 20 11, Alexander Best wrote:
On Sun Nov 20 11, Denise H. G. wrote:
On 2011/11/19 at 19:24, Alexander Best arun...@freebsd.org wrote:
hi there,
just stumbled upon this little detail:
1) have / mounted read-only
2) 'make buildkernel'
3) 'make installkernel echo success'
- this will fail
4) 'mount -uw /'
5) 'make installkernel echo success'
- this will succeed
6) 'mount -ur /'
7) 'make installkernel echo success'
- this will succeed. why?
According to mount(8), 'mount -ur /' will fail if / is already mounted
read-write with any files currently opened by some processes. I think
this might be your case.
i'd don't think so:
otaku% sudo mount -uw /
otaku% echo $?
0
otaku% sudo mount -ur /
otaku% echo $?
0
...also 'mount -p' reports / to be read-only again.
...also during 7), mkdir(1) returns an error that / isn't writable. it's
install(1) that claims the kernel was successfully installed into
/boot/kernel,
although installation of the kernel didn't succeed.
i don't think this is an install(1) issue, since in 3), install(1) returns an
error. i think in 7), install(1)'s output gets somehow redirected to
/dev/null,
and its return value isn't being preserved.
i'll try to use 'mount -ufr /' in 6) and see, if that has any impact. also
after 6) i'll try to run install(1) manually to see, whether it actually
reports an error (then the build(7) facility is to blame) or not (in which
case
there's a problem with install(1) itself).
MYSTERY SOLVED! ;)
install gets executed with the -p option, which implies the -C option. this
means that install will do a comparison of the installed kernel in
/boot/kernel
and the one in /usr/obj, before actually executing. during the first
installkernel invocation, the files differ, so install complains. during the
second invocation the files don't differ. that's why install succeeds,
although
/ is mounted read-only. ;)
Great. I used to explicitly alias 'install' to 'install -C' in
/etc/make.conf, which seems to accelerate installation processes.
cheers.
alex
cheers.
alex
cheers.
alex
--
If you've got them by the balls,
their hearts and minds will follow.
--
The first page the author turns to upon receiving an
advance copy will be the page containing the worst
error.
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