Re: [SOLVED] persistent generic device for tape changer

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Good evening,

my final solution:
SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="8",
ATTRS{model}=="MAGNUM 224      ", IMPORT{program}="scsi_id
--sg-version=3 --export --whitelisted -d $devnode", \
   SYMLINK+="changer0"

SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="8",
ATTRS{model}=="FlexStor II     ", ATTRS{rev}=="5.11",
IMPORT{program}="scsi_id --sg-version=3 --export --whitelisted -d
$devnode", \
   SYMLINK+="changer1"

SUBSYSTEM=="scsi_generic", SUBSYSTEMS=="scsi", ATTRS{type}=="8",
ATTRS{model}=="FlexStor II     ", ATTRS{rev}=="5.50",
IMPORT{program}="scsi_id --sg-version=3 --export --whitelisted -d
$devnode", \
   SYMLINK+="changer2"

Very helpful:

/dev/sch0, /dev/sch1, /dev/sch2 are persistent devices - but not generic
devices.

udevadm info -a /dev/sch0
shows all possible attributes in the udev rules key format.

best regards

Helmut


Viele Grüße
Helmut Drodofsky

Internet XS Service GmbH
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Helmut Drodofsky
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Mail: info@xxxxxxxxxxxxxx
www.internet-xs.de
Am 08.02.2019 um 12:21 schrieb Leon Fauster via CentOS:
>> Am 08.02.2019 um 00:13 schrieb Ron Loftin <reloftin@xxxxxxxxxxxx>:
>>
>> On Thu, 2019-02-07 at 22:29 +0100, Helmut Drodofsky wrote:
>>> Hello Ron,
>>>
>>> sounds good. I have 2 tape changer. I persume, udev creates the same
>>> link for both.
>>>
>>> Can I modify
>>> SYMLINK+="changer-$env{ID_SERIAL}"
>>>
>>> The serial should be unique.
>>>
>>> Viele Grüße
>>> Helmut Drodofsky
>>>
>>>
>> I've taken you as far as I can go.  Now you will have to experiment a
>> bit for your use case.  I should point out that at least in my system,
>> the link with the serial number in it shows up even with the line
>> commented in the rules file.
>>
>> As always, YMMV.
> Maybe
>
> .... ATTRS{serial}=="likethis16c07338d2a294c" , SYMLINK+="mybackup/changer1" ...
>
> and for the second one 
>
> ... ATTRS{serial}=="likethis9ae76c073f5ccb8" , SYMLINK+="mybackup/changer2" ...
>
> ?
>
> --
> LF
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