Date: Fri, 26 Nov 2010 04:01:59 +0200 From: Nezmer <misc@nezmer.info> To: freebsd-usb@freebsd.org Subject: Re: External usb HDD disconnects, system gets messed up Message-ID: <20101126020159.GA2408@mail> In-Reply-To: <201011250940.19677.hselasky@c2i.net> References: <20101125025526.GA2772@mail> <201011250940.19677.hselasky@c2i.net>
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On Thu, Nov 25, 2010 at 09:40:19AM +0100, Hans Petter Selasky wrote: > On Thursday 25 November 2010 03:55:26 Nezmer wrote: > > Hi, > > > > FreeBSD 8.1-STABLE r215402M GENERIC amd64 > > > > I'm having a weird issue. I have a 300GB external usb HDD with one ext2 > > partition. I use ZFS for my internal HDD. > > > > Almost daily, The usb HDD disconnects(according to dmesg) and the system > > gets messed up. Running processes keep responding but they would not > > exit. And no new processes would start running. I eventually would have > > to hard reset and run fsck.ext2 on the next run. > > > > Any idea what's going on? > > Do you need any specific information? > > Hi, > > When this hang happens you can try to turn on umass debugging: > > sysctl hw.usb.umass.debug=-1 > > You need this option in your kernel config or when building the umass module > to enable the sysctl above: > > options USB_DEBUG > > --HPS Thank you for the hint. I managed to freeze the system this time. 1st, I tried to cd to a dir and got an I/O error. Here is some debug output: umass0:umass_bbb_dump_csw: CSW 208387: sig = 0x53425355 (valid), tag = 0x00032e03, res = 4096, status = 0x01 (failed) umass0:umass_t_bbb_status_callback: Command failed, residue = 4096 umass0:umass_cam_cb: Fetching 32 bytes of sense data umass0:umass_bbb_dump_cbw: CBW 208388: cmd = 6b (0x030000002000), data = 32b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=32 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=0 umass0:umass_transfer_start: transfer index = 8 umass0:umass_t_bbb_status_callback: Failed to read CSW: USB_ERR_STALLED, try 0 umass0:umass_transfer_start: transfer index = 5 umass0:umass_transfer_start: transfer index = 8 umass0:umass_bbb_dump_csw: CSW 208388: sig = 0x53425355 (valid), tag = 0x00032e04, res = 14, status = 0x00 (good) (da0:umass-sim0:0:0:0): READ(10). CDB: 28 0 0 0 30 57 0 0 8 0 (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error (da0:umass-sim0:0:0:0): SCSI status: Check Condition (da0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not ready to ready change, medium may have changed) umass0:umass_cam_action: 2:0:0:XPT_SCSI_IO: cmd: 0x28, flags: 0x40, 10b cmd/4096b data/32b sense umass0:umass_bbb_dump_cbw: CBW 208389: cmd = 10b (0x280000003057...), data = 4096b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=4096 umass0:umass_transfer_start: transfer index = 5 umass0:umass_transfer_start: transfer index = 8 umass0:umass_bbb_dump_csw: CSW 208389: sig = 0x53425355 (valid), tag = 0x00032e05, res = 4096, status = 0x01 (failed) umass0:umass_t_bbb_status_callback: Command failed, residue = 4096 umass0:umass_cam_cb: Fetching 32 bytes of sense data umass0:umass_bbb_dump_cbw: CBW 208390: cmd = 6b (0x030000002000), data = 32b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=32 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=0 umass0:umass_transfer_start: transfer index = 8 umass0:umass_t_bbb_status_callback: Failed to read CSW: USB_ERR_STALLED, try 0 umass0:umass_transfer_start: transfer index = 5 umass0:umass_transfer_start: transfer index = 8 umass0:umass_bbb_dump_csw: CSW 208390: sig = 0x53425355 (valid), tag = 0x00032e06, res = 14, status = 0x00 (good) (da0:umass-sim0:0:0:0): READ(10). CDB: 28 0 0 0 30 57 0 0 8 0 (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error (da0:umass-sim0:0:0:0): SCSI status: Check Condition (da0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not ready to ready change, medium may have changed) umass0:umass_cam_action: 2:0:0:XPT_SCSI_IO: cmd: 0x28, flags: 0x40, 10b cmd/4096b data/32b sense umass0:umass_bbb_dump_cbw: CBW 208391: cmd = 10b (0x280000003057...), data = 4096b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=4096 umass0:umass_transfer_start: transfer index = 5 umass0:umass_transfer_start: transfer index = 8 umass0:umass_bbb_dump_csw: CSW 208391: sig = 0x53425355 (valid), tag = 0x00032e07, res = 4096, status = 0x01 (failed) umass0:umass_t_bbb_status_callback: Command failed, residue = 4096 umass0:umass_cam_cb: Fetching 32 bytes of sense data umass0:umass_bbb_dump_cbw: CBW 208392: cmd = 6b (0x030000002000), data = 32b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=32 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=0 umass0:umass_transfer_start: transfer index = 8 umass0:umass_t_bbb_status_callback: Failed to read CSW: USB_ERR_STALLED, try 0 umass0:umass_transfer_start: transfer index = 5 umass0:umass_transfer_start: transfer index = 8 umass0:umass_bbb_dump_csw: CSW 208392: sig = 0x53425355 (valid), tag = 0x00032e08, res = 14, status = 0x00 (good) (da0:umass-sim0:0:0:0): READ(10). CDB: 28 0 0 0 30 57 0 0 8 0 (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error (da0:umass-sim0:0:0:0): SCSI status: Check Condition (da0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not ready to ready change, medium may have changed) umass0:umass_cam_action: 2:0:0:XPT_SCSI_IO: cmd: 0x28, flags: 0x40, 10b cmd/4096b data/32b sense umass0:umass_bbb_dump_cbw: CBW 208393: cmd = 10b (0x280000003057...), data = 4096b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=4096 umass0:umass_transfer_start: transfer index = 5 umass0:umass_transfer_start: transfer index = 8 umass0:umass_bbb_dump_csw: CSW 208393: sig = 0x53425355 (valid), tag = 0x00032e09, res = 4096, status = 0x01 (failed) umass0:umass_t_bbb_status_callback: Command failed, residue = 4096 umass0:umass_cam_cb: Fetching 32 bytes of sense data umass0:umass_bbb_dump_cbw: CBW 208394: cmd = 6b (0x030000002000), data = 32b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=32 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=0 umass0:umass_transfer_start: transfer index = 8 umass0:umass_t_bbb_status_callback: Failed to read CSW: USB_ERR_STALLED, try 0 umass0:umass_transfer_start: transfer index = 5 umass0:umass_transfer_start: transfer index = 8 umass0:umass_bbb_dump_csw: CSW 208394: sig = 0x53425355 (valid), tag = 0x00032e0a, res = 14, status = 0x00 (good) (da0:umass-sim0:0:0:0): READ(10). CDB: 28 0 0 0 30 57 0 0 8 0 (da0:umass-sim0:0:0:0): CAM status: SCSI Status Error (da0:umass-sim0:0:0:0): SCSI status: Check Condition (da0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not ready to ready change, medium may have changed) umass0:umass_cam_action: 2:0:0:XPT_SCSI_IO: cmd: 0x28, flags: 0x40, 10b cmd/4096b data/32b sense umass0:umass_bbb_dump_cbw: CBW 208395: cmd = 10b (0x280000003057...), data = 4096b, lun = 0, dir = in umass0:umass_transfer_start: transfer index = 4 umass0:umass_t_bbb_data_read_callback: max_bulk=131072, data_rem=4096 umass0:umass_transfer_start: transfer index = 5 umass0:umass_tr_error: transfer error, USB_ERR_TIMEOUT -> reset umass0:umass_cam_action: 2:0:0:XPT_SCSI_IO: cmd: 0x03, flags: 0x40, 6b cmd/32b data/32b sense umass0:umass_t_bbb_reset1_callback: BBB reset! umass0:umass_tr_error: transfer error, USB_ERR_TIMEOUT -> reset (da0:umass-sim0:0:0:0): AutoSense failed g_vfs_done():ext2fs/EXTERNAL[READ(offset=6303744, length=4096)]error = 5 Then I tried to umount and the system froze. I obviously couldn't save any dmesg output. But I think a try to write to the system and "fsync giving up on dirty" caused the freeze. I took some pictures of the screen. So I can write more output down if needed.
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