On Thu, Nov 15, 2012 at 07:45:40AM -0300, Marcos Ariel Laufer wrote:
> Of course!!
> I *always* umount the disk before unplugging it. That didn't stop the OS
> from freezing.
> I've been using OpenBSD since 2.6, this never happened to me with any
> other USB hard disks. This one in particular i bought it a couple of
> days ago.
This particular disk has ses(4). That is uncommmon for a USB disk. My
guess the problem has something to do with that.
Cc'ing dlg@, maybe he has a clue.
-Otto
>
>
> On 11/15/2012 6:19 AM, David Diggles wrote:
> > did you unmount it first?
> >
> > Marcos Laufer <mar...@ipv4networks.com> wrote:
> >
> >> Hello, i'd like to inform a problem when dettaching an external 1TB USB
> >>
> >> disk drive , the system just freezes, i can't type anything. Also It
> >> stops responding to ping.
> >> If i don't unplug it then i can use the disk normally, i can copy and
> >> delete files with no problem. But as soon as i unplug the USB cord, the
> >>
> >> machine freezes.
> >> I've tested it on several machines, different OpenBSD versions starting
> >>
> > >from 4.3, i'm not asking for support, i know old OpenBSD versions are
> >> no
> >> longer supported, but this seemed pretty odd, i suppose that plugging
> >> and unplugging a USB disk should not cause any problems on any OS
> >> version.
> >>
> >> These are the lines on dmesg about this disk:
> >>
> >>
> >> Nov 14 16:00:31 hq /bsd: umass0 at uhub0
> >> Nov 14 16:00:31 hq /bsd: port 5 configuration 1 interface 0 "Western
> >> Digital My Passport 0748" rev 2.10/10.15 addr 2
> >> Nov 14 16:00:31 hq /bsd: umass0: using SCSI over Bulk-Only
> >> Nov 14 16:00:31 hq /bsd: scsibus0 at umass0: 2 targets, initiator 0
> >> Nov 14 16:00:31 hq /bsd: sd0 at scsibus0 targ 1 lun 0: <WD, My Passport
> >>
> >> 0748, 1015> SCSI4 0/direct fixed
> >> Nov 14 16:00:38 hq /bsd: sd0: 953837MB, 512 bytes/sec, 1953458176 sec
> >> total
> >> Nov 14 16:00:38 hq /bsd: ses0 at scsibus0 targ 1 lun 1: <WD, SES
> >> Device,
> >> 1015> SCSI4 13/enclosure services fixed
> >> Nov 14 16:00:38 hq /bsd: ses0: unable to read enclosure configuration
> >>
> >> Best regards,
> >> Marcos
