Red hat enterprise linux, Enabling lun support in netware, Enterprise – Dell TL2000 User Manual
Page 240: Linux, Enabling, Support, Netware
Red
Hat
Enterprise
Linux
RHEL
doesn’t
automatically
probe
all
LUNs
on
SCSI
devices.
The
symptom
shows
LUN
0,
which
would
be
the
drive,
but
not
the
loader.
1.
Type
#cat
/proc/scsi/scsi
.
Attached
devices:
Host:
scsi0
Channel:
00
Id:
06
Lun:
00
Vendor:
CERTANCE
Model:
ULTRIUM
2
Rev:
1826
Type:
Sequential-Access
ANSI
SCSI
revision:
03
2.
You
will
need
to
add
the
following
to
/etc/modules.conf
options
scsi_mod
max_scsi_luns=255
Note:
In
RHEL
4,
it
is
max_luns=255
3.
Once
that’s
added,
you
will
have
to
rebuild
the
initrd
and
reboot
the
server.
There
is
a
way
to
test
this
before
editing
the
files
and
rebooting,
but
there’s
too
much
of
a
risk
of
taking
down
other
SCSI
devices
in
the
process.
Rebuilding
the
initrd
will
be
the
tricky
part.
You
have
to
know
exactly
which
kernel
version
you
want
to
use
to
do
this
properly.
You
can
find
out
the
kernel
version
by
using
the
uname
command.
#uname
-r
2.4.9-e.38
Note:
There
is
a
list
of
known
kernel
versions
on
the
Red
Hat
Enterprise
Linux
page.
4.
So,
given
the
version
is
2.4.9-e.38
#
cp
/boot/initrd-2.4.9-e.38.img
/boot/initrd-2.4.9-e.38.img.bak
#
mkinitrd
-f
-v
/boot/initrd-2.4.9-e.38.img
2.4.9-e.38
This
should
give
some
output,
then
go
to
a
new
prompt.
If
it
gives
any
errors,
check
the
syntax
you
put
into
/etc/modules.conf
or
contact
someone
knowledgeable
with
Linux.
5.
If
successful,
the
server
WILL
need
to
be
rebooted.
Once
it
comes
back
up,
check
/proc/scsi/scsi
again.
#cat
/proc/scsi/scsi
Attached
devices:
Host:
scsi0
Channel:
00
Id:
06
Lun:
00
Vendor:
CERTANCE
Model:
ULTRIUM
2
Rev:
1826
Type:
Sequential-Access
ANSI
SCSI
revision:
03
Host:
scsi0
Channel:
00
Id:
06
Lun:
01
Vendor:
DELL
Model:
PV-124T
Rev:
V31
Type:
Medium
Changer
ANSI
SCSI
revision:
03
Enabling
LUN
Support
in
Netware
1.
From
the
System
Console,
verify
the
LUN
device
is
not
being
detected
by
using
the
list
storage
adapters
command.
Typical
output
where
only
the
tape
drive
is
being
recognized:
0x08
[V321-A3]
Adaptec
SCSI
Card
39160/3960D
-
Ultra160
SCSI
[slot
201]
0x15
[V321-A3-D5:0]
IBM
ULTRIUM-TD3
5BG2
0x09
[V321-A4]
Adaptec
SCSI
Card
39160/3960D
-
Ultra160
SCSI
[slot
202]
2.
From
the
System
Console,
type
nwconfig
.
3.
Select
NCF
files
Options
from
the
Configuration
Options
screen.
4.
Select
Edit
STARTUP.NCF
from
the
Available
NCF
Files
Options
screen.
D-2
Dell
PowerVault
TL2000
Tape
Library
and
TL4000
Tape
Library
User's
Guide