Kenneth R Westerback wrote: > 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 > > >
Hello, i've just tried this. The ses device is not present when i disable it at boot time, but the problem persists, if i unplug the USB cord (no matter if the partition is mounted or not) the OS just freezes. So i guess it is not related to the ses driver. This are the dmesg lines of this experiment: Nov 15 12:32:52 hq /bsd: umass0 at uhub0 Nov 15 12:32:52 hq /bsd: port 5 configuration 1 interface 0 "Western Digital My Passport 0748" rev 2.10/10.15 addr 2 Nov 15 12:32:52 hq /bsd: umass0: using SCSI over Bulk-Only Nov 15 12:32:52 hq /bsd: scsibus0 at umass0: 2 targets, initiator 0 Nov 15 12:32:52 hq /bsd: sd0 at scsibus0 targ 1 lun 0: <WD, My Passport 0748, 1015> SCSI4 0/direct fixed Nov 15 12:32:59 hq /bsd: sd0: 953837MB, 512 bytes/sec, 1953458176 sec total Nov 15 12:32:59 hq /bsd: uk0 at scsibus0 targ 1 lun 1: <WD, SES Device, 1015> SCSI4 13/enclosure services fixed
