re: kern/55189: NVMe SSD reports unsafe shutdowns

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR kern/55189; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
    netbsd-bugs%netbsd.org@localhost, gson%gson.org@localhost (Andreas Gustafsson)
Subject: re: kern/55189: NVMe SSD reports unsafe shutdowns
Date: Wed, 22 Apr 2020 03:51:04 +1000

 >  matthew green wrote:
 >  >  we don't do this for wd(4) as well, on some of my systems
 >  >  atactl can report eg:
 >  >  
 >  >  174 100    0     no  online  positive    Unexpected Power Loss Count 27
 >  >  
 >  >  that goes up when i have an otherwise successful "poweroff".
 >  
 >  That could also be PR 54969, which was just fixed in -current.  What
 >  version are those systems running?
 
 ah, none of the are -current, but the problem i saw has
 been around for a long time (netbsd-6 at least?) so i'm
 not sure it was broken by the same change, or perhaps
 fixed by the same fixed.
 
 it may be -- looking at a test machine, i see that wd0
 does not detach at reboot, and simple reboot didn't make
 that count go up (but i'm not near the machine with a
 long history of this...)
 
 
 i'll try to setup a test for this.
 
 
 .mrg.