Re: Adding Fibre Channel array to FC

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Mark Haney wrote:
Okay, I'm stuck and I hope someone can help me out. I have a FC server that has 2 FC arrays already setup on it each with 2TB. I just connected up 2 more arrays each with 7.5TB and now I'm trying to figure out how (if possible) I can get FC to see the arrays without rebooting the server. Is this possible? I'd prefer to get it up and running without the reboot, and as I"m a newbie to FC SANS on linux, I'm at a loss. Help anyone?



If they are seen as separate SCSI devices, or LUNs you could try this:

to add a SCSI device, do

echo "scsi add-single-device a b c d" > /proc/scsi/scsi

where

      a == hostadapter id (first one being 0)
      b == SCSI channel on hostadapter (first one being 0)
      c == ID
      d == LUN (first one being 0)


I make absolutely no guarantee that this won't cause your server to crash and burn. The risk is for you to weigh against the loss of service caused by re-boot.

Of course there are other things to take into account also. Does your fibre adaptor see the new devices, or does that need to be cycled in some way?

--
Nigel Wade, System Administrator, Space Plasma Physics Group,
            University of Leicester, Leicester, LE1 7RH, UK
E-mail :    nmw@xxxxxxxxxxxx
Phone :     +44 (0)116 2523548, Fax : +44 (0)116 2523555


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