[ale] multi-processor vs. Tape Drive

Robert L. Harris Robert.L.Harris at rdlg.net
Wed May 25 12:14:00 EDT 2005



Sounds like a bug in the driver code.  Are both kernels exactly the
same?

On the SMP kernel try "rmmod st; modprobe st" and check to see if
there's any output (check dmesg also).



Thus spake James McFarland (stalax at earthlink.net):

> 
> When I  use "modprobe st "It shows up under lsmod.  However, the device (/dev/st0) is not available.  Do I need to create it manually?  If so, can you point to someplace with the appropriate instructions?
> 
> It also isn't present under /proc/scsi/scsi:
> 
> SMP Kernel:
> [root at pheonix ~]# cat /proc/scsi/scsi
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
>   Vendor: ADAPTEC  Model: oldmail-RAID5    Rev: V1.0
>   Type:   Direct-Access                    ANSI SCSI revision: 02
> 
> 
> SP Kernel:
> [root at pheonix ~]# cat /proc/scsi/scsi
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
>   Vendor: ADAPTEC  Model: oldmail-RAID5    Rev: V1.0
>   Type:   Direct-Access                    ANSI SCSI revision: 02
> Host: scsi0 Channel: 02 Id: 06 Lun: 00
>   Vendor: QUANTUM  Model: DLT VS160        Rev: 2500
>   Type:   Sequential-Access                ANSI SCSI revision: 02
> 
> 
> Robert L. Harris wrote:
> 
> >
> >What happens if you load the SMP kernel and "modprobe st" ?
> >
> >
> >Thus spake James McFarland (stalax at earthlink.net):
> >
> >>I hope someone on this list can point me in the right direction.
> >>
> >>I am trying to turn an old dual P3  server into a basic fileserver.  I added an adaptec 2200s Dual Chanel SCSI Raid Controller.  To Chanel  0 I connected 3 drives for a RAID 5.  To Chanel  1 I connected an external Tape drive.  I then installed Fedora Core 3.
> >>
> >>When I use the SMP Kernel, the system cannot find the Tape Drive (lsmod shows st isn't loaded).  When I use the single processor kernel, It finds the Tape drive just fine, but I get only one processor.  In either case, it sees the RAID array just fine.
> >>
> >>I have updated the BIOS on both the motherboard & the SCSI card.  Removing the RAID array or changing SCSI channels makes no difference.
> >>
> >>It seems to me that there is a difference in the Kernel configuration somewhere.  However, my kernel knowledge is limited at best & my initial attempts to locate a meaningful difference have been unsuccessful.
> >>
> >>I am running the basic Kernels installed with Core 3 (2.6.11-1.14_FC3).
> >>
> >>If anyone can offer a suggestion as to where I should look in my system's configuration, or direct me towards an appropriate net resource I'd really appreciate it.
> >>
> >>-James
> >>_______________________________________________
> >>Ale mailing list
> >>Ale at ale.org
> >>http://www.ale.org/mailman/listinfo/ale
> >
> >
> >:wq!
> >---------------------------------------------------------------------------
> >Robert L. Harris                     | GPG Key ID: E344DA3B
> >                                         @ x-hkp://pgp.mit.edu
> >DISCLAIMER:
> >      These are MY OPINIONS             With Dreams To Be A King,
> >       ALONE.  I speak for              First One Should Be A Man
> >       no-one else.                       - Manowar
> >
> >
> >
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> 
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:wq!
---------------------------------------------------------------------------
Robert L. Harris                     | GPG Key ID: E344DA3B
                                         @ x-hkp://pgp.mit.edu
DISCLAIMER:
      These are MY OPINIONS             With Dreams To Be A King,
       ALONE.  I speak for              First One Should Be A Man
       no-one else.                       - Manowar

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