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Old 12-15-2006, 01:53 PM   #1
nitrohuffer2001
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SAN Volumes Go away with switch reboot


Hey guys, I have many Linux boxes with SAN attached volumes. If our switch reboots when it comes backup the linux boxes can not see the san volumes until they are rebooted. The windows boxes however can still see the san volumes after the switch reboots. How can I make the san volumes available to the linux boxes without a reboot of the box?

Thanks

 
Old 12-15-2006, 02:35 PM   #2
MensaWater
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What kind of fibre HBAs do you have in the Linux boxes? Some of the vendors have utilities for rescanning the SCSI bus. Recently I used QLogic's ql-scan-lun.sh utility for my QLA 2340 cards on some RHEL 3 hosts.

Not sure if it would solve your problem but might be worth a try.

Question: Why are you rebooting your fibre switches? I've been here for over 2 years and have not had to do that ever.
 
Old 12-16-2006, 12:09 PM   #3
nitrohuffer2001
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We did not intened on rebooting the fiber switches, lets just say it was a layer 8 problem. What about partprobe? They all have qlogic cards in them but I do not theink the utilities are installed. I know part probe does a scan as well an it is a native application but I did not want to power off the switches again to check.

Thanks for you response.

 
Old 12-16-2006, 09:07 PM   #4
MensaWater
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The utility can be downloaded (that's how I got it) from Qlogic's site. Didn't use partprobe for what I was doing. Did try a different utility called scsi_scan (not sure where it came from - EMC provided it at the test site) but it had odd results.

My read of partprobe is it deals with partition changes so I wouldn't think it would be what you wanted since you're missing the whole device rather than just a specific partition.
 
  


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