Weird usb memorystick problem
- From: Iwan <rhythmstick@xxxxxxxxx>
- Date: Sun, 30 Sep 2007 18:19:52 +0200
Hi,
I recently noticed weird behaviour with my USB memorystick. This is on
AMD64 unstable, with:
linux-image-2.6.22-2-amd64
udev 0.114-2
I have defined the following udev rule:
ATTRS{idVendor}=="13e0", ATTRS{idProduct}=="2517", KERNEL=="sd*",
SYMLINK+="usb/stick%n", OPTIONS+="all_partitions"
The memorystick has one primary partition (vfat).
When the stick is inserted while booting, udev correctly creates the
desired symlinks:
# ls -l /dev/usb
lrwxrwxrwx 1 root root 6 2007-09-30 17:30 stick -> ../sda
lrwxrwxrwx 1 root root 6 2007-09-30 17:30 stick1 -> ../sda1
However, when I insert the same memorystick after the computer is booted, only
the symlink to /dev/sda is created.
Also, the kernel messages are quit different in these two cases.
When I insert the stick after booting, the kernel log shows the following:
Sep 30 17:54:15 casper kernel: usb 1-5: new high speed USB device using ehci_hcd and address 10
Sep 30 17:54:15 casper kernel: usb 1-5: configuration #1 chosen from 1 choice
Sep 30 17:54:15 casper kernel: hub 1-5:1.0: USB hub found
Sep 30 17:54:15 casper kernel: hub 1-5:1.0: 1 port detected
Sep 30 17:54:15 casper kernel: usb 1-5.1: new high speed USB device using ehci_hcd and address 11
Sep 30 17:54:15 casper kernel: usb 1-5.1: configuration #1 chosen from 1 choice
Sep 30 17:54:15 casper kernel: scsi6 : SCSI emulation for USB Mass Storage devices
Sep 30 17:54:15 casper kernel: usb-storage: device found at 11
Sep 30 17:54:15 casper kernel: usb-storage: waiting for device to settle before scanning
Sep 30 17:54:20 casper kernel: usb-storage: device scan complete
Sep 30 17:54:20 casper kernel: scsi scan: INQUIRY result too short (5), using 36
Sep 30 17:54:20 casper kernel: scsi 6:0:0:: Direct-Access USB 2.0 Flash Drive 1.00 PQ: 0 ANSI: 0
Sep 30 17:54:20 casper kernel: sd 6:0:0:0: [sda] Attached SCSI disk
However, looking back in the kernel boot log (that is, with the
memorystick inserted), I see:
[snip]
Sep 30 17:03:15 casper kernel: usb-storage: device scan complete
Sep 30 17:03:15 casper kernel: scsi scan: INQUIRY result too short (5), using 36
Sep 30 17:03:15 casper kernel: scsi 4:0:0:0: Direct-Access USB 2.0 Flash Drive 1.00 PQ: 0 ANSI: 0
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] 256000 512-byte hardware sectors (131 MB)
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] Write Protect is off
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] Mode Sense: 03 00 00 00
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] Assuming drive cache: write through
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] 256000 512-byte hardware sectors (131 MB)
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] Write Protect is off
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] Mode Sense: 03 00 00 00
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] Assuming drive cache: write through
Sep 30 17:03:15 casper kernel: sda: sda1
Sep 30 17:03:15 casper kernel: sd 4:0:0:0: [sda] Attached SCSI disk
Does this problem sound familiar to anyone on this list?
Thanks,
Iwan
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