Re: Qlogic Fibre Channel Controller
Cameron Matheson wrote:
Hi,
Nick wrote:
Hello, I was curious if anyone has installed and/or has any
documentation or materials regarding
the installation of a qlogic 2340 HBA on a debian box. We would like
to connect some debian hosts
to a SAN in the near future. Is this a pretty straight forward
installation? Or will I be required to recompile
the kernel etc?
I am in the process of doing this myself (same card). I had to
compile my kernel, but only because it seems that the debian kernel
has removed the qla2300 module (could someone explain to me why?). If
you use the vanilla 2.6 sources though it will include the necessary
kernel module.
So which drivers did you use? I cannot seem to find suitable driver
sources, Could you assist? and what stept did you have to go through to
get them installed and working at boot time?
I have a question of my own though. I'm not actually familiar w/ the
SAN technology and i'm not sure how to use it. I have two of the
qlogic cards in my box. Only one of them is hooked up to the fibre
(the kernel detects that it is hooked up), but how do i access the
san? I really have no idea how it works but it seems like i should
have a /proc/scsi/qla2x00 w/ some various information about the cards,
etc. but i dont' have it. Could someone clue me into what i might be
doing wrong?
When the drive/module is loaded is should scan for SCSI LUN's attached
via the fibre, You are correct, you should see them in /proc/scsi/scsi
and /proc/scsi/qlaxxx as LUN's.
Here is the procedure to rescan and add devices under linux per Qlogic :
To force a rescan from the command line, type the following command:
# echo "scsi-qlascan" > /proc/scsi/<driver-name>/<adapter-id>
(QLogic driver rescans)
Where:
- <driver-name> = qla2100, qla2200, qla2300 (2.4 kernel drivers) or qla2xxx (2.6 kernel drivers)
- <adapter-id> = the instance number of the HBA
After executing this command, force the SCSI mid layer to do its own scan and build the device table entry for the new device by typing the following command:
# echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi
(scsi mid layer re-scans)
Where:
- "0 1 2 3" = your "Host Channel ID LUN"
The scanning must be done in the above mentioned order: first the driver (qla2300/qla2200 driver, etc.), and then the Linux SCSI mid layer (i.e. OS scan).
If everything is plumbed and your card is installed ok you should see
everything after a reboot, You might check your zoning or any LUN
masking you may
have enabled.
Thanks,
Cameron Matheson
N
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