[issue1734] savecore is not picking up dumpdev if the device is not also swap

["Alexander Polakov \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

Alexander Polakov <polachok@gmail.com> added the comment:

> What is strange, is that the sysctl kern.dumpdev is empty:
> # sysctl -a |grep dumpdev
> kern.dumpdev:

It isn't strange. kern.dumpdev is not of a string, it's CTLTYPE_OPAQUE (actually
udev_t), as you can see at kern/kern_shutdown.c around line 658.

I think you can set dumpdev in /boot/loader.conf to make savecore happy.

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status: unread -> chatting

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<http://bugs.dragonflybsd.org/issue1734>
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