On Wed, Nov 14, 2012 at 04:22:20PM -0300, Marcos Laufer 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 >
As an experiment, try going into boot's config (-c at the boot>) and "disable ses". Then see if a) the ses device is still present, and b) if the absence of the ses device(s) alleviate the symptoms. .... Ken
