At Wed, 05 Jan 2011 17:53:16 +0100 CentOS mailing list <centos@xxxxxxxxxx> wrote:
>
> I have Centos 5.2 and am trying to set up my first tape loader, a
> Quantum SuperLoader 3. My "cat /proc/scsi/scsi" outputs the following:
>
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
> Vendor: transtec Model: PV610F16R1C Rev: 373I
> Type: Direct-Access ANSI SCSI revision: 05
> Host: scsi1 Channel: 00 Id: 01 Lun: 00
> Vendor: HP Model: Ultrium 3-SCSI Rev: D22D
> Type: Sequential-Access ANSI SCSI revision: 03
> Host: scsi1 Channel: 00 Id: 05 Lun: 00
> Vendor: HP Model: Ultrium 4-SCSI Rev: B54Z
> Type: Sequential-Access ANSI SCSI revision: 05
>
>
> It is my understanding that there should be TWO devices for the loader,
> one for the tape drive and one for itself. From reading around, it seems
> that it's lacking Multiple LUM support. My question is, are more recent
> versions of CentOS enabling that by default? Either compiling kernel
> modules or doing a full upgrade of the system are "big" jobs in my case,
> but I'd prefer the upgrade if 5.5 works out of the box. Or do I really
> need to recompile kernel, enable max_lums in modprobe.conf, etc?
The current CentOS 5 kernel (CentOS 5.5: 2.6.18-194.26.1.el5) has
multiple LUN support enabled (this is the stock kernel):
sauron.deepsoft.com% grep LUN /boot/config-2.6.18-194.26.1.el5
CONFIG_PREEMPT_VOLUNTARY=y
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
CONFIG_SCSI_MULTI_LUN=y
Upgrading to 5.5 is probably a good idea anyway.
>
> Thank you
>
> Abe
>
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--
Robert Heller -- 978-544-6933 / heller@xxxxxxxxxxxx
Deepwoods Software -- http://www.deepsoft.com/
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