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kexec init script fails without separate boot partition
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furanku
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Joined: 08 May 2003
Posts: 874
Location: Hamburg, Germany

PostPosted: Sat Oct 13, 2012 10:11 am    Post subject: kexec init script fails without separate boot partition Reply with quote

Whenever kexec starts I get the error message

Code:
# /etc/init.d/kexec restart
 * Caching service dependencies ...                                       [ ok ]
 * Configuring kexec ...
 * Mounting /boot ...
mount: can't find /boot in /etc/fstab                                     [ !! ]
 * ERROR: kexec failed to start


KNAME ist set correctly in /etc/conf.d/kexec, everything else left to default. The problem seems to be, that the kexec init script tries to mount a separet /boot partition during it's automatic configuration, which fails of course, if /boot is just a directory in / and not on its own partition.

AFAIK a separate boot partition is no dependecy for a gentoo system, so I would consider this as bug. Any ideas, before I file a bug report?
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khayyam
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Joined: 07 Jun 2012
Posts: 2336

PostPosted: Sat Oct 13, 2012 12:54 pm    Post subject: Reply with quote

furanku ...

looking at /etc/init.d/kexec it only tries to mount /boot if the image can't be found:

Code:
if [ -z "${img}" ] ; then
    # If we cannot find our image, try mounting ${BOOTPART}

So, it doesn't expect that /boot is a partition that needs mounted, only that it can find ${KNAME} which in your case doesn't seem to be happening. If your sure that ${KNAME} is correct you might try uncommenting BOOTPART="/boot" (though from the script it would seem that this shouldn't be needed).

best ... khay
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furanku
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Joined: 08 May 2003
Posts: 874
Location: Hamburg, Germany

PostPosted: Sat Oct 13, 2012 1:32 pm    Post subject: Reply with quote

If I comment out the whole if-block I get

Code:
# /etc/init.d/kexec restart
 * Caching service dependencies ...                                       [ ok ]
 * Configuring kexec ...
 * Loading kernel image /boot/kernel-3.6.2-gentoo for kexec ...
 *    Setting kexec with  --reuse-cmdline -l /boot/kernel-3.6.2-gentoo root=/dev/root


I double checked that the kernel image exists:

Code:
$ ls  /boot/kernel-3.6.2-gentoo
/boot/kernel-3.6.2-gentoo


So I tried a reboot.

Now the system took a loooong time to
Code:
 * Saving system dependcies cache


and hangs after
Code:
Starting new kernel
.

I still hear the hard disks clicking, so there still seems to be acitivity.

Strange ... Without kexec the system reboots normally via bios.
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