Safety harnesses

[Graham Perrin]

On 17/06/2021 20:57, Ronald F. Guilmette wrote:

> Graham Perrin<grahamperrin at gmail.com>  wrote:
>
>> The surprise, to me, was losing fifty-something seconds' worth of data
>> in a kernel panic situation...
> In an ideal universe, the kernel never panics. …

+1

tl;dr I was (originally) aiming to get backtraces for panics, intended 
panics.

The surprises with UFS were (originally) having no crash dumps after 
editing /etc/rc.conf to enable crash dumps; /usr/local/etc/sudoers empty 
after use of visudo; gdb not found after installing gdb; and so on. 
Eventually I discovered that all such losses were expected.