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тАО01-28-2005 01:28 AM
тАО01-28-2005 01:28 AM
Hi,
I've got an MSL5026 with 2 x SDLTs and an NSR E1200 connected to our SAN.
The SAN is shared with both Tru64 boxes and Linux boxes. Our Tru64 boxes can see the tape changer and the two drives without any problems, however I can't get any of our Linux boxes to see the tape drives even though they see the Medium Changer.
Can someone give me some pointers as to what I need to be looking at ?
Cheers,
Rob
I've got an MSL5026 with 2 x SDLTs and an NSR E1200 connected to our SAN.
The SAN is shared with both Tru64 boxes and Linux boxes. Our Tru64 boxes can see the tape changer and the two drives without any problems, however I can't get any of our Linux boxes to see the tape drives even though they see the Medium Changer.
Can someone give me some pointers as to what I need to be looking at ?
Cheers,
Rob
Solved! Go to Solution.
2 REPLIES 2
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тАО01-28-2005 01:48 AM
тАО01-28-2005 01:48 AM
Solution
The changer device is usually presented at FC LUN #0 and the tape drives on the next higher LUNs. It sounds like you have to tell your kernel to scan for multiple LUNs on a target.
I think you need to put something like "options scsi_mod max_scsi_luns=255" into file "/etc/modules.conf"
I think you need to put something like "options scsi_mod max_scsi_luns=255" into file "/etc/modules.conf"
.
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тАО01-28-2005 02:52 AM
тАО01-28-2005 02:52 AM
Re: Accessing MSL5026 SDLT drives from RedHat EL AS 3.0
Hi,
That nearly did the trick...
Just had to work out how to rebuild initrd to get it to read the new values:
So in /etc/modules.conf :
options scsi_mod max_scsi_luns=255
Then
# cp /boot/initrd-2.4.21-20.ELsmp.img /boot/initrd-2.4.21-20.ELsmp.img.bak
# mkinitrd -f -v /boot/initrd-2.4.21-20.ELsmp.img 2.4.21-20.ELsmp
Now I need to work out how to access the changer...
Cheers,
Rob
That nearly did the trick...
Just had to work out how to rebuild initrd to get it to read the new values:
So in /etc/modules.conf :
options scsi_mod max_scsi_luns=255
Then
# cp /boot/initrd-2.4.21-20.ELsmp.img /boot/initrd-2.4.21-20.ELsmp.img.bak
# mkinitrd -f -v /boot/initrd-2.4.21-20.ELsmp.img 2.4.21-20.ELsmp
Now I need to work out how to access the changer...
Cheers,
Rob
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