Just a short report to a thread I started when 11.1 came out.
This machine would stall in a busy loop while attaching disks
during boot. Rebuilding a kernel with EARLY_AP_STARTUP disabled
avoided the problem. This was a situation through the whole
11.1 life cycle (i.e. patch releases did not help).
Today I have upgraded this host to 11.2-BETA2, and it is
no longer necessary to disable EARLY_AP_STARTUP. Good, thanks!
Mark
2017-07-20 02:03, Mark Johnston wrote:
One thing to try at this point would be to disable EARLY_AP_STARTUP in
the kernel config. That is, take a configuration with which you're
able
to reproduce the hang during boot, and remove "options
EARLY_AP_STARTUP".
2017-07-20 15:45, Mark Martinec wrote:
Done. And it avoids the problem altogether! Thanks.
Tried a reboot several times and it succeeds every time.
Here is all that I had in a config file for building a kernel,
i.e. I took away the 'options DDB' which also seemingly avoided
the problem:
include GENERIC
ident NELI
nooptions EARLY_AP_STARTUP
This feature has a fairly large impact on the bootup process and has
had a few problems that manifested as hangs during boot. There was at
least one other case where an innocuous change to the kernel
configuration "fixed" the problem by introducing some second-order
effect (causing kernel threads to be scheduled in a different
order, for instance).
[...]
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