On Wednesday 13 December 2006 21:29, Alan Stern wrote:
> In fact the stick has 2 LUNs, but your usbmon log shows that Linux is
> looking at only the first one. Probably you don't have
> CONFIG_SCSI_MULTI_LUN set in your kernel. My guess is that the first LUN
Indeed I didn't. I've turned it on and got somewhat different
results. /var/log/messages on stick insert:
Dec 14 18:57:57 quanxi kernel: usb 1-1: USB disconnect, address 2
Dec 14 18:57:59 quanxi kernel: usb 1-1: new high speed USB device using
ehci_hcd and address 3
Dec 14 18:58:00 quanxi kernel: usb 1-1: Product: Nu Drive
Dec 14 18:58:00 quanxi kernel: usb 1-1: Manufacturer:
Dec 14 18:58:00 quanxi kernel: usb 1-1: SerialNumber: 075A141402A5
Dec 14 18:58:00 quanxi kernel: usb 1-1: configuration #1 chosen from 1 choice
Dec 14 18:58:00 quanxi kernel: scsi1 : SCSI emulation for USB Mass Storage
devices
Dec 14 18:58:05 quanxi kernel: Vendor: Model: Nu Drive
Rev: PMAP
Dec 14 18:58:05 quanxi kernel: Type: Direct-Access
ANSI SCSI revision: 00
Dec 14 18:58:05 quanxi kernel: SCSI device sda: 982016 512-byte hdwr sectors
(503 MB)
Dec 14 18:58:05 quanxi kernel: sda: Write Protect is off
Dec 14 18:58:05 quanxi kernel: SCSI device sda: 982016 512-byte hdwr sectors
(503 MB)
Dec 14 18:58:05 quanxi kernel: sda: Write Protect is off
Dec 14 18:58:05 quanxi kernel: sda:<7>usb-storage: queuecommand called
Dec 14 18:58:05 quanxi kernel: sd 1:0:0:0: SCSI error: return code =
0x08000002
Dec 14 18:58:05 quanxi kernel: sda: Current: sense key=0x3
Dec 14 18:58:05 quanxi kernel: ASC=0x11 ASCQ=0x0
Dec 14 18:58:05 quanxi kernel: end_request: I/O error, dev sda, sector 0
Dec 14 18:58:05 quanxi kernel: sd 1:0:0:0: SCSI error: return code =
0x08000002
Dec 14 18:58:05 quanxi kernel: sda: Current: sense key=0x3
Dec 14 18:58:05 quanxi kernel: ASC=0x11 ASCQ=0x0
Dec 14 18:58:05 quanxi kernel: end_request: I/O error, dev sda, sector 0
Dec 14 18:58:05 quanxi kernel: sd 1:0:0:0: SCSI error: return code =
0x08000002
Dec 14 18:58:05 quanxi kernel: sda: Current: sense key=0x3
Dec 14 18:58:05 quanxi kernel: ASC=0x11 ASCQ=0x0
Dec 14 18:58:05 quanxi kernel: end_request: I/O error, dev sda, sector 0
Dec 14 18:58:05 quanxi kernel: unable to read partition table
Dec 14 18:58:05 quanxi kernel: sd 1:0:0:0: Attached scsi removable disk sda
Dec 14 18:58:05 quanxi kernel: Vendor: Model: Nu Drive
Rev: PMAP
Dec 14 18:58:05 quanxi kernel: Type: Direct-Access
ANSI SCSI revision: 00
Dec 14 18:58:05 quanxi kernel: SCSI device sdb: 3072 512-byte hdwr sectors (2
MB)
Dec 14 18:58:05 quanxi kernel: sdb: Write Protect is on
Dec 14 18:58:05 quanxi kernel: SCSI device sdb: 3072 512-byte hdwr sectors (2
MB)
Dec 14 18:58:05 quanxi kernel: sdb: Write Protect is on
Dec 14 18:58:05 quanxi kernel: sdb:<7>usb-storage: queuecommand called
Dec 14 18:58:05 quanxi kernel: sdb1
Dec 14 18:58:05 quanxi kernel: sd 1:0:0:1: Attached scsi removable disk sdb
``mount -t vfat /dev/sdb1 /mnt/stick'' succeeds (while sda, sda1 and sdb all
fail) but with
mount: block device /dev/sdb1 is write-protected, mounting read-only
I've read somewhere that it's by design and that ``mount -o
rw,remount /mnt/stick'' should allow write access, but here it fails with
mount: block device /dev/sda1 is write-protected, mounting read-only
- the LUNs are getting confused...
> is meant for some special purpose and the second is what you want to use.
> It should show up as /dev/sdb.
Under Windows, the stick does show as 2 drives (a big, 479 MB, originally
empty one and a small 1,44 MB drive with some PDF documentation and an
executable I still didn't have the occasion to run), but both drives are
normally readable and writeable. Under Linux, ``mount -t
vfat /dev/sdb1 /mnt/stick'' mounts the small storage.
Bye
Vasek
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