Date: Fri, 31 Aug 2018 10:08:20 -0600 From: Samuel Chow <cyschow@shaw.ca> To: stable@freebsd.org Subject: Cannot setup dumpdev on glabel disk Message-ID: <19f80f48-5fea-e105-18b2-1a64e06acc79@shaw.ca>
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I am running 11-STABLE, and I am experiencing kernel panics when I am destroying a VIMAGE-based jail. Naturally, I flipped to the chapter about 'Kernel Debugging' to learn about 'Obtaining a Kernel Crash Dump'. However, I am finding that my permanently glabel'ed disk partition cannot be used as dumpdev. Is that true, and why not? I mean, swap can use it just fine. I am unable to find this restriction in the documentation. # grep swap /etc/fstab /dev/label/boot01b none swap sw 0 0 # swapinfo Device 1K-blocks Used Avail Capacity /dev/label/boot01b 41943040 0 41943040 0% # glabel status | grep boot label/boot01 N/A ada4s1 label/boot02 N/A ada5s1 # dumpon /dev/label/boot01b dumpon: ioctl(DIOCSKERNELDUMP): Operation not supported by device
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