[nylug-talk] scsi, tape drive, kernel 2.6

[Kiryl Hakhovich]

Luis Murillo wrote:
> Just a quick question, to which SCSI controller do you have this drive
> connected to?
>   
hmmm on the back of the server there is a scsci connector :)
> Well, while I'm here, I might as well ask for a bit more information here ;)
>
> What technology is the tape drive?
>   
It's a DLT PowerVault 124T tape library.
> As far as I know, the tape drives are not supported on RAID
> controllers, they are only supported on standard SCSI HBAs.
>
>   
This is may be true :) but then again, the controller before boot, says 
that DLT tape drive detected on channel 1 with scsi-id 6.
> I read over the multiple e-mails so I might have missed something,
> correct me if I'm wrong :)
>
> -LM
>
> On 7/16/07, Kiryl Hakhovich <administrator at bsolution.net> wrote:
>   
>> Peter C. Norton wrote:
>>     
>>> On Mon, Jul 16, 2007 at 11:30:31AM -0400, Kiryl Hakhovich wrote:
>>>
>>>       
>>>> Peter C. Norton wrote:
>>>>
>>>>         
>>>>> On Mon, Jul 16, 2007 at 10:49:24AM -0400, Kiryl Hakhovich wrote:
>>>>>
>>>>>
>>>>>           
>>>>>> thanks for response, the trick is that it has 3  hard drives connected
>>>>>> to a different channel of same scsci controller, and fedora able to boot
>>>>>> from it and sees the raid just fine. Unless there is no support for
>>>>>> removable media in this driver?
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>>
>>>>>>             
>>>>> IIRC tape drives are supported as scsi "generic" devices. These
>>>>> devices are supported by the sg* device. So as a first step, make sure
>>>>> that you have the scsi generic driver loaded (sg).
>>>>>
>>>>> -Peter
>>>>>
>>>>>
>>>>>
>>>>>           
>>>> thanks Peter, here is a quick addition
>>>> [root at sys ~]# lsmod |grep sg
>>>> sg                     37341  0
>>>> scsi_mod              138221  4 st,sg,aacraid,sd_mod
>>>> [root at sys ~]#
>>>>
>>>> so the driver is loaded, but does not seem to be used by anything :)
>>>>
>>>>         
>>> You also have the st driver, for scsi tapes, which means that I may be
>>> remembering incorrectly (ah... sg for cd-writers and for some
>>> functions of tapes that aren't covered by the st driver:
>>> http://sg.torque.net/sg/). You shouldn't immediately worry about the 0
>>> refcount, that just means that any associated devices aren't in use by
>>> this driver. Look at the st driver now.
>>>
>>> -Peter
>>>
>>>
>>>       
>> yes i have read on friday a little about st driver, and it is loaded too
>> [root at sys ~]# lsmod |grep st
>> st                     40157  0
>> scsi_mod              138221  4 st,sg,aacraid,sd_mod
>> [root at sys ~]#
>>
>>
>>
>> --
>> Sincerely,
>>
>> Kiryl Hakhovich
>>
>>
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>>     
>
>
>   


-- 
Sincerely,

Kiryl Hakhovich