kern/60623: warning fatigue: fss0: snapshot invalid: forced by unmount

["campbell+netbsd%mumble.net@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60623
>Category:       kern
>Synopsis:       warning fatigue: fss0: snapshot invalid: forced by unmount
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 20 18:05:00 +0000 2026
>Originator:     Taylor R Campbell
>Release:        current, 11, 10, 9, ...
>Organization:
The NetBSD Snapshoutation, Esquerr.
>Environment:
>Description:

	If an fss(4) snapshot is configured when the system is shut
	down, the kernel prints a scary error message

		fss0: snapshot invalid: forced by unmount

	to the console, even though (as far as I can tell) there is
	nothing wrong.

>How-To-Repeat:

	1. fssconfig fss0 / /.snap
	2. shutdown -p now

>Fix:

	Either this message should be less scary and not printed with
	aprint_error_dev, or it should be removed altogether to avoid
	warning fatigue.