Re: Timing issues with USB attached storage

[Jason Thorpe <thorpej%me.com@localhost>]

> On Nov 18, 2022, at 3:59 AM, adr <adr%SDF.ORG@localhost> wrote:
> 
> On Fri, 18 Nov 2022, Michael van Elst wrote:
>> Something like:
>> 
>> Index: sys/kern/init_main.c
>> ===================================================================
>> RCS file: /cvsroot/src/sys/kern/init_main.c,v
>> retrieving revision 1.541
>> diff -p -u -r1.541 init_main.c
>> --- sys/kern/init_main.c        26 Oct 2022 23:20:47 -0000      1.541
>> +++ sys/kern/init_main.c        18 Nov 2022 06:36:05 -0000
>> @@ -671,6 +671,13 @@ main(void)
>>       sysctl_finalize();
>> 
>>       /*
>> +        * Breathe
>> +        */
>> +       printf("SLEEP 5 seconds\n");
>> +       kpause("breathe", false, 5 * hz, NULL);
>> +       printf("SLEPT 5 seconds\n");
>> +
>> +       /*
>>        * Now that autoconfiguration has completed, we can determine
>>        * the root and dump devices.
>>        */
> 
> Wouldn't it be worthy to add a kernel parameter like linux's
> rootwait?

This shouldn’t be needed at all.  The autoconfiguration infrastructure is supposed to ensure that all outstanding device discovery tasks are complete before the root file system is mounted.

-- thorpej