Hi,
I've seen a few reports floating around lately that the sda1 node isn't getting created on plugin of some usb-storage devices.
In these situations, the sda node appears on plugin, but no partitons (e.g. sda1) turn up until you do *something* with the sda node.
Even if its as simple as:
fdisk -l /dev/sdaOr even
touch /dev/sdaI have gathered some logs of a situation like this, for the following device: Vendor: M-Sys Product: DiskOnKey Serial Number: 0501631530002F06 Protocol: Transparent SCSI Transport: Bulk Quirks:
Tested under Linux 2.6.7. Here are the logs of plugin:
Jun 19 17:34:09 [kernel] uhci_hcd 0000:00:04.2: wakeup_hc
Jun 19 17:34:09 [kernel] uhci_hcd 0000:00:04.2: port 1 portsc 0083
Jun 19 17:34:09 [kernel] hub 1-0:1.0: debounce: port 1: delay 100ms stable 4 status 0x101
Jun 19 17:34:09 [kernel] usb 1-1: new full speed USB device using address 2
Jun 19 17:34:09 [kernel] usb 1-1: new device strings: Mfr=1, Product=2, SerialNumber=3
Jun 19 17:34:09 [kernel] usb 1-1: default language 0x0409
Jun 19 17:34:09 [kernel] usb 1-1: Product: DiskOnKey
Jun 19 17:34:09 [kernel] usb 1-1: Manufacturer: M-Sys
Jun 19 17:34:09 [kernel] usb 1-1: SerialNumber: 0501631530002F06
Jun 19 17:34:09 [kernel] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
Jun 19 17:34:09 [kernel] usb-storage 1-1:1.0: usb_probe_interface
Jun 19 17:34:09 [kernel] usb-storage: Transport: Bulk
Jun 19 17:34:09 [kernel] usb-storage: GetMaxLUN command result is 1, data is 0
Jun 19 17:34:09 [kernel] usb-storage: *** thread sleeping.
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: *** thread awakened.
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 36/36
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk data transfer result 0x0
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk status result = 0
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: *** thread awakened.
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk command transfer result=0
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 122/122
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk data transfer result 0x0
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk status result = 0
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: *** thread awakened.
Jun 19 17:34:09 [kernel] usb-storage: Command TEST_UNIT_READY (6 bytes)
Jun 19 17:34:09 [kernel] usb-storage: Bulk Command S 0x43425355 T 0x3 L 0 F 0 Trg 0 LUN 0 CL 6
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk command transfer result=0
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk status result = 0
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk command transfer result=0
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 18/18
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Bulk data transfer result 0x0
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: Command TEST_UNIT_READY (6 bytes)
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 18/18
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: Command TEST_UNIT_READY (6 bytes)
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 31/31
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 18/18
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] usb-storage: Status code 0; transferred 13/13
Jun 19 17:34:09 [kernel] usb-storage: -- transfer complete
Jun 19 17:34:09 [kernel] Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: *** thread awakened.
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: *** thread awakened.
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: Bad target number (3:0)
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: Bad target number (4:0)
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: Bad target number (5:0)
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: Bad target number (6:0)
Jun 19 17:34:09 [kernel] usb-storage: queuecommand called
Jun 19 17:34:09 [kernel] usb-storage: Bad target number (7:0)
Jun 19 17:34:09 [kernel] USB Mass Storage device found at 2
Now we do "touch /dev/sda", and get:
Jun 19 17:35:20 [kernel] usb-storage: queuecommand called Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 18/18 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] usb-storage: queuecommand called Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] usb-storage: queuecommand called Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 8/8 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] SCSI device sda: 239872 512-byte hdwr sectors (123 MB) Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] usb-storage: queuecommand called Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] usb-storage: queuecommand called Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 8/8 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] SCSI device sda: 239872 512-byte hdwr sectors (123 MB) Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 4096/4096 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13 Jun 19 17:35:20 [kernel] p1 Jun 19 17:35:20 [kernel] usb-storage: queuecommand called Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 31/31 Jun 19 17:35:20 [kernel] usb-storage: Status code 0; transferred 13/13
And unplug:
Jun 19 17:36:09 [kernel] uhci_hcd 0000:00:04.2: port 1 portsc 008a Jun 19 17:36:09 [kernel] usb-storage: -- sending exit command to thread Jun 19 17:36:09 [kernel] uhci_hcd 0000:00:04.2: port 1 portsc 0088 Jun 19 17:36:10 [kernel] uhci_hcd 0000:00:04.2: suspend_hc
One workaround is to use hotplug. Some versions (not all) presumably do the equivalent of "touch /dev/sda" when a device is detected - some see installing hotplug as a solution to this, but it seems just to be masking the problem.
Any ideas?
Thanks. Daniel
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