Date: Tue, 01 Oct 2024 18:17:43 +0100 From: Frank Leonhardt <freebsd-doc@fjl.co.uk> To: FreeBSD questions mailing list <freebsd-questions@freebsd.org> Subject: I can't get no crash dump Message-ID: <e83d4893fcaae0914b4b17c981cc5ea7@fjl.co.uk>
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[-- Attachment #1 --] I've got a host that's mysteriously rebooting. There's no clue in the logs. It's not doing much - it's just a gateway. Just every few hours, it reboots. (It was a BSD 12 upgraded to 13, and it's been sitting there as a standby gateway for ages with no problem - ask it to do a bit of work and it gets in a strop). Anyway, I'm trying to figure out how to get a crash dump, assuming there's a kernel panic leading to a reboot. rc.conf: dumpdev="AUTO" # swapinfo -h Device Size Used Avail Capacity /dev/ada0p2 8.0G 0B 8.0G 0% # ls -ld /dev/dumpdev lrwxr-xr-x 1 root wheel 11 Oct 1 15:07 /dev/dumpdev -> /dev/ada0p2 # ls -al /crash total 10 drwxr-x--- 2 root wheel 3 Nov 15 2022 . drwxr-xr-x 24 root wheel 24 Oct 1 15:07 .. -rw-r--r-- 1 root wheel 5 Oct 23 2020 minfree - (contains "2048") What am I missing here? Surely when it reboots I should be seeing vmcore.0 in there. Unfortunately this host is remote. Any other bright ideas about where I can find a clue what's upsetting it would be welcome. Thanks, Frank. [-- Attachment #2 --] <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 10pt; font-family: Verdana,Geneva,sans-serif'> <p>I've got a host that's mysteriously rebooting. There's no clue in the logs. It's not doing much - it's just a gateway. Just every few hours, it reboots. (It was a BSD 12 upgraded to 13, and it's been sitting there as a standby gateway for ages with no problem - ask it to do a bit of work and it gets in a strop).</p> <p>Anyway, I'm trying to figure out how to get a crash dump, assuming there's a kernel panic leading to a reboot.</p> <p>rc.conf:</p> <p>dumpdev="AUTO"</p> <p><br /></p> <p># swapinfo -h<br />Device Size Used Avail Capacity<br />/dev/ada0p2 8.0G 0B 8.0G 0%</p> <p><br /></p> <p># ls -ld /dev/dumpdev<br />lrwxr-xr-x 1 root wheel 11 Oct 1 15:07 /dev/dumpdev -> /dev/ada0p2</p> <p><br /></p> <p># ls -al /crash<br />total 10<br />drwxr-x--- 2 root wheel 3 Nov 15 2022 .<br />drwxr-xr-x 24 root wheel 24 Oct 1 15:07 ..<br />-rw-r--r-- 1 root wheel 5 Oct 23 2020 minfree - (contains "2048")</p> <p><br /></p> <p>What am I missing here? Surely when it reboots I should be seeing vmcore.0 in there. Unfortunately this host is remote. Any other bright ideas about where I can find a clue what's upsetting it would be welcome.</p> <p>Thanks, Frank.</p> <p><br /></p> <p><br /></p> <p><br /></p> <p><br /></p> <p><br /></p> </body></html>
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