Re: shutdown no longer umounts idle USB connected drive.

Reply: Ian FREISLICH : "Re: shutdown no longer umounts idle USB connected drive."
In reply to: Ian FREISLICH : "Re: shutdown no longer umounts idle USB connected drive."
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From: Warner Losh <imp_at_bsdimp.com>
Date: Sat, 05 Sep 2026 16:03:48 UTC

On Sun, Aug 23, 2026, 10:37 AM Ian FREISLICH <ianfreislich@gmail.com> wrote:

> On 8/23/26 10:55, Christos Margiolis wrote:
> > On Sun Aug 23, 2026 at 12:05 AM EEST, Ian FREISLICH wrote:
> >> Hi
> >>
> >> I have a USB connected hard drive which powers down when idle. Recently
> >> (in the last 2 weeks or so) shutdown appears to have stopped waiting for
> >> the drive to spin up in order to cleanly unmount. I can perform a git
> >> bisect but the system is relatively slow so if anyone has a change in
> >> mind that might be the culprit, I can start around that point.
> >>
> >> Ian
> >
> > Which driver is it using? Anything showing up in dmesg?
> [router] ~ # usbconfig -d ugen0.2 show_ifdrv
> ugen0.2: <External SATA Hard Drive Adapter cable PA023U3 Other World
> Computing> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=ON (224mA)
> ugen0.2.0: umass0: <ULT-Best Best USB Device, class 0/0, rev 3.00/41.01,
> addr 1>
>
> I started getting these after a kernel built on July 28, but only during
> the cron.daily job:
>
> Jul 31 03:06:53 router kernel: (da0:umass-sim0:0:0:0): READ(10). CDB: 28
> 00 43 22 1e 28 00 00 40 00
> Jul 31 03:06:53 router kernel: (da0:umass-sim0:0:0:0): CAM status: SCSI
> Status Error
> Jul 31 03:06:53 router kernel: (da0:umass-sim0:0:0:0): SCSI status:
> Check Condition
> Jul 31 03:06:53 router kernel: (da0:umass-sim0:0:0:0): SCSI sense:
> ABORTED COMMAND asc:47,1 (Data phase CRC error detected)
> Jul 31 03:06:53 router kernel: (da0:umass-sim0:0:0:0): Retrying command
> (per sense data)
> Jul 31 03:07:01 router kernel: (da0:umass-sim0:0:0:0): READ(10). CDB: 28
> 00 43 22 1e 28 00 00 40 00
> Jul 31 03:07:01 router kernel: (da0:umass-sim0:0:0:0): CAM status: SCSI
> Status Error
> Jul 31 03:07:01 router kernel: (da0:umass-sim0:0:0:0): SCSI status:
> Check Condition
> Jul 31 03:07:01 router kernel: (da0:umass-sim0:0:0:0): SCSI sense: NOT
> READY asc:4,1 (Logical unit is in process of becoming ready)
> Jul 31 03:07:01 router kernel: (da0:umass-sim0:0:0:0): Polling device
> for readiness
>

So what's the problem here? The drive wasn't ready, we retried without an
error is what this log shows me.

Warner

But I now can't reproduce the issue. Oh well.
>
> Ian
>
>