rc.d/zpool runs before ada(4) attaches

[tech-lists]

On Tue, Dec 01, 2020 at 08:34:33AM -0700, Ian Lepore wrote:
>On Tue, 2020-12-01 at 16:22 +0100, Ronald Klop wrote:
>>
>> You can define these in /boot/loader.conf:
>> #kern.cam.boot_delay="10000" # Delay (in ms) of root mount for CAM
>> bus
>> #kern.cam.scsi_delay="2000" # Delay (in ms) before probing SCSI
>>
>> Maybe that helps.
>>
>> Ronald.
>>
>
>Those settings control waiting before mounting root.  Harry's problem
>is that root is mounted quickly, before other drives are ready for zfs.
>
>The zpool script waits for 'disks'.  It would be nice if the cam
>subsystem had something like a sysctl it set to indicate when initial
>probing for disks was done, then there could be an rc.d/camprobe script
>with 'PROVIDE: disks' which waits for the probing to complete.
>
>-- Ian

kern.cam.boot_delay should still fix it because what is required is a delay
while the devices (all of the disks, zfs or not) get ready. Because root 
has to happen before disks/zfs. 
-- 
J.
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