Re: Udev-124, USB tape drive

[John Huttley <John@mib-infotech.co.nz>]

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Ok, attached is my 60-persistent-storage-tape.rules

adding |nst*[0-9]  seems to have fixed the issue.

my tape/by-id/  looks like

HP-C7438A-4855310710385844 -> ../../st4
HP-C7438A-4855310710385844-nst -> ../../nst4
HP-Ultrium_1-SCSI-HU84H06998 -> ../../st3
HP-Ultrium_1-SCSI-HU84H06998-nst -> ../../nst3
HP-Ultrium_2-SCSI-HUL3K02633 -> ../../st2
HP-Ultrium_2-SCSI-HUL3K02633-nst -> ../../nst2
QUANTUM-DLT8000-PXB23P0605 -> ../../st1
QUANTUM-DLT8000-PXB23P0605-nst -> ../../nst1
QUANTUM-DLT8000-PXB23P0632 -> ../../st0
QUANTUM-DLT8000-PXB23P0632-nst -> ../../nst0
STK-L80-LLC02205205 ->../../sg1


which in my opinion is a huge improvement, since I can see which drive 
is which and the serial number matches up with the serial number shown 
by tapeinfo.



I think that should be the standard.


The USB drive (C7438A) is now consistent between st and nst, however the
serial number is HU107108XD  not  4855310710385844.

I have no idea how to fix that since the rules now use things like bsg 
and usb_id %p which  are entirely undocumented.

Regards,

John



Kay Sievers wrote:
> On Thu, Jul 10, 2008 at 05:03, John Huttley <John@mib-infotech.co.nz> wrote:
>> Now my scsi tape drives are all identified nicely, (thankyou)
>> I'm looking at my USB tape drive.
>>
>> Its st and nst incarnations are getting different /by-id/ info.
>>
>> HP-C7438A-4855310710385844 -> ../../st4
>> HP-C7438A-HU107108XD-nst -> ../../nst4
>>
>> The problem seems to be
>> KERNEL=="st*[0-9]", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="usb",
>> IMPORT{program}="usb_id --export %p"
>>
>>
>> but that won't pick up nst*, as the later rules do.
>> Also applys to the 1394 tape drives.
> 
> Care to adapt the rules to work on your box, then we can start from there?
> 
> Thanks a lot,
> Kay
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[-- Attachment #2: 60-persistent-storage-tape.rules --]
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# do not edit this file, it will be overwritten on update

# persistent storage links: /dev/tape/{by-id,by-path}

ACTION!="add|change", GOTO="persistent_storage_tape_end"

# type 8 devices are "Medium Changers"
KERNEL=="sg[0-9]*", SUBSYSTEMS=="scsi", ATTRS{type}=="8", IMPORT{program}="scsi_id --sg-version=3 --page=0x80 --export --whitelisted -d $tempnode", SYMLINK+="tape/by-id/$env{ID_VENDOR}-$env{ID_MODEL}-$env{ID_SERIAL_SHORT}"

SUBSYSTEM!="scsi_tape", GOTO="persistent_storage_tape_end"

KERNEL=="st*[0-9]|nst*[0-9]", ATTRS{ieee1394_id}=="?*", ENV{ID_SERIAL}="$attr{ieee1394_id}", ENV{ID_BUS}="ieee1394"
KERNEL=="st*[0-9]|nst*[0-9]", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="usb", IMPORT{program}="usb_id --export %p"

KERNEL=="st*[0-9]|nst*[0-9]", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="scsi", KERNELS=="[0-9]*:*[0-9]", ENV{BSG_DEV}="$root/bsg/$id"
KERNEL=="st*[0-9]|nst*[0-9]", ENV{ID_SERIAL}!="?*", WAIT_FOR="$env{BSG_DEV}", IMPORT="scsi_id --page=0x80 --whitelisted --export --device=$env{BSG_DEV}", ENV{ID_BUS}="scsi"

KERNEL=="st*[0-9]",  ENV{ID_SERIAL}=="?*", SYMLINK+="tape/by-id/$env{ID_VENDOR}-$env{ID_MODEL}-$env{ID_SERIAL_SHORT}"
KERNEL=="nst*[0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="tape/by-id/$env{ID_VENDOR}-$env{ID_MODEL}-$env{ID_SERIAL_SHORT}-nst"

# by-path (shortest physical path)
KERNEL=="st*[0-9]", IMPORT{program}="path_id %p"
KERNEL=="st*[0-9]", ENV{ID_PATH}=="?*", SYMLINK+="tape/by-path/$env{ID_PATH}"

LABEL="persistent_storage_tape_end"