At Wed, 5 Jan 2011 13:43:24 -0500 CentOS mailing list <centos@xxxxxxxxxx> wrote:
>
> On Wed, Jan 05, 2011 at 10:37:23AM -0800, Alan Hodgson wrote:
> > On January 5, 2011 08:53:16 am Abilio Carvalho wrote:
> > > I have Centos 5.2 and am trying to set up my first tape loader, a
>
> > Multiple LUN support has worked fine in Linux since, well, since there has been
> > Linux on SCSI afaik. If your SCSI controller sees it CentOS should see it.
> > Unless the driver sucks.
>
> RedHat 4 definitely didn't scan multiple LUNs by default, even though
> the drivers could handle it. I thought RedHat 5 did, but it's possible
> to configure it not to.
The CentOS 4.8 kernel I have (2.6.9-89.0.16.EL) does not have
CONFIG_SCSI_MULTI_LUN set:
sauron.deepsoft.com% grep LUN /boot/config-2.6.9-89.0.16.EL
CONFIG_PREEMPT_VOLUNTARY=y
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
# CONFIG_SCSI_MULTI_LUN is not set
But the CentOS 5.5 kernel (-2.6.18-194.26.1.el5) does:
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
>
> Anyway
> https://access.redhat.com/kb/docs/DOC-3293
>
--
Robert Heller -- 978-544-6933 / heller@xxxxxxxxxxxx
Deepwoods Software -- http://www.deepsoft.com/
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