On Fri, 20 Nov 2009, Vitaly Kuznetsov wrote: > Alan Stern <st...@rowland.harvard.edu> writes: > > >> So, the minimum is US_FL_MAX_SECTORS_64 | US_FL_BULK_IGNORE_TAG > > > > I would still like to see a usbmon trace showing what happens with > > US_FL_BULK_IGNORE_TAG and _without_ US_FL_MAX_SECTORS_64. > > > > usbmon attached, dmesg looks like: > > [90833.235667] usb-storage: device found at 10 > [90833.235672] usb-storage: waiting for device to settle before scanning > [90838.232280] usb-storage: device scan complete > [90838.232741] scsi 10:0:0:0: Direct-Access SAMSUNG YP-CP3 > 1.00 PQ: 0 ANSI: 0 > [90838.233107] scsi 10:0:0:1: Direct-Access SAMSUNG microSD Card > 1.00 PQ: 0 ANSI: 0 CCS > [90838.251803] sd 10:0:0:0: [sdb] 7649280 512-byte hardware sectors: (3.91 > GB/3.64 GiB) > [90838.252389] sd 10:0:0:0: [sdb] Write Protect is off > [90838.252394] sd 10:0:0:0: [sdb] Mode Sense: 03 00 00 00 > [90838.252397] sd 10:0:0:0: [sdb] Assuming drive cache: write through > [90838.254505] sd 10:0:0:0: [sdb] Assuming drive cache: write through > [90838.254513] sdb: > [90838.255649] sd 10:0:0:0: [sdb] Attached SCSI removable disk > [90838.256630] sd 10:0:0:1: [sdc] Attached SCSI removable disk > [90838.389146] sd 10:0:0:0: [sdb] Unhandled error code > [90838.389150] sd 10:0:0:0: [sdb] Result: hostbyte=DID_ERROR > driverbyte=DRIVER_OK > [90838.389155] end_request: I/O error, dev sdb, sector 8 > [90838.389159] __ratelimit: 110 callbacks suppressed > [90838.389162] Buffer I/O error on device sdb, logical block 1 > [90838.389168] Buffer I/O error on device sdb, logical block 2 > [90838.389171] Buffer I/O error on device sdb, logical block 3 > [90838.389174] Buffer I/O error on device sdb, logical block 4 > [90838.389177] Buffer I/O error on device sdb, logical block 5 > [90838.389180] Buffer I/O error on device sdb, logical block 6 > [90838.389183] Buffer I/O error on device sdb, logical block 7 > [90838.389186] Buffer I/O error on device sdb, logical block 8 > [90838.389189] Buffer I/O error on device sdb, logical block 9 > [90838.389192] Buffer I/O error on device sdb, logical block 10 > [90838.502971] sd 10:0:0:0: [sdb] Unhandled error code > [90838.502975] sd 10:0:0:0: [sdb] Result: hostbyte=DID_ERROR > driverbyte=DRIVER_OK > [90838.502980] end_request: I/O error, dev sdb, sector 0 > [90838.674599] sd 10:0:0:0: [sdb] Unhandled error code > [90838.674602] sd 10:0:0:0: [sdb] Result: hostbyte=DID_ERROR > driverbyte=DRIVER_OK > [90838.674607] end_request: I/O error, dev sdb, sector 0 > [90840.751890] sd 10:0:0:0: [sdb] Unhandled error code > [90840.751898] sd 10:0:0:0: [sdb] Result: hostbyte=DID_ERROR > driverbyte=DRIVER_OK > [90840.751907] end_request: I/O error, dev sdb, sector 0
Okay, thanks. It looks like the IGNORE_RESIDUE flag might also work. But if MAX_SECTORS_64 is good enough, it's probably a better choice. Have you tested this device with a microSD card inserted? Alan Stern -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
