Fibre Channel is OFFLINE Errors and A1000

Hi All,
I have an A1000 Sun StorEdge disk array that is attached to an Ultra II server running solaris 9. Soon as I attached the A1000 disk array and powered the box up, the following errors started to show up in /var/adm/messages on the Ultra2:
Jun 25 13:26:12 sec46 soc: [ID 854183 kern.info] ID[SUNWssa.soc.link.5010] soc0: port 0 WWN 90165e: Fibre Channel is OFFLINE
Jun 25 13:26:39 sec46 soc: [ID 854183 kern.info] ID[SUNWssa.soc.link.6010] soc0: port 0 WWN 90165e: Fibre Channel is ONLINE
Jun 25 13:26:39 sec46 soc: [ID 854183 kern.info] ID[SUNWssa.soc.login.6010] soc0: port 0 WWN 90165e: Fibre Channel login succeeded
Jun 25 13:26:39 sec46 soc: [ID 854183 kern.info] ID[SUNWssa.soc.link.1010] soc0: port 0 WWN 90165e: message: SSA110 V3.11 (122096) Fri Dec 20 19:09:18 1996
I have applied all of the recommened patches on the system powered down both, the A1000 and the system and brought them back up. No joy
Does any one know why the heck these errors are showing up?
Any pointers will be much appreciated
SamSB.

They are coming from your SSA112(114) array. Check the fibre cable and FCOM to / from SSA. It has nothing to do with A1000 because A1000 is not fibre

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First let me apologize for not responding earlier to your response, I tend to get busy and then forget to check back here.
Tod, the answer to your question is No, only one computer is accessing the xserve raid files at any one time and that is via Fibre Channel. However I do have the xserve raids set up as share points via ethernet.
Maybe I should turn that off and only access the files with the one computer that can connect via fibre channel.
I never thought of that. I will try that while I await for your answer, thanks again.
Todd Buhmiller
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Xserve: 2x2Ghz Dual Core Intel Xeon, 5Gb of Ram, Running 10.5.8 Leopard Server
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Here is the problem.
The directory for the xserve raids keep getting corrup, and I use disc warrior to rebuild them. Is there a way to keep the directories from getting corrupt? I am a few pieces of equipment before I can build an Xsan as that is the ultimate goal, but until then, I just need to be able to have the raids funciton as storage without having to rebuild the directories all of the time.
Anybody have any suggestions?
Thanks
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Widescreen Media
Calgary, Alberta Canada
Tod Kuykendall
Posts: 1,237
From: San Diego
Registered: Oct 11, 2000
Re: Xserve Raid Mounts, Corrupt Directory tired of rebuilding directory
Posted: Jun 27, 2010 1:25 PM in response to: Todd Buhmiller
Are multiple computers accessing the same data on the RAID at the same time?
If so then NO. This is the source of your data corruption and I'm surprised if you were able to get all your data back every time if this is how you've been running your system. Each fibre channel assumes it has full and sole control of every volume it has mounted, no data arbitration is practiced and data corruption will occur if this assumption is wrong.
The only way this set-up will work is to use partitions or LUN masks so the volumes are accessed by one computer at any time. As long as one computer relinquishes control before another mounts it you will dodge arbitration issues but this is a dangerous game. If you screw up and mount an already mounted volume - and there is no easy way to tell if a volume is mounted - corruption will then occur. Sharing data simultaneous at fibre speeds is what XSAN does and to do this you need it.
HTH,
=Tod
Intel Xserve, G5 XServes, XRAID, Promise

+The xserve raids will mount automatically to any computer that I connect the qlogic fc switch to+
This is source of the corruption to your data. Any computer that attaches to a drive/partition via fibre channel assumes that it alone is in control of the drive and data corruption is inevitable.
+Is that the issue, should I disconnect the xserve from the fc switch and leave it connected via ethernet?+
Short answer: YES. The ethernet connections are fine because the server is controlling the file arbitration through the sharing protocol. Fibre channel connections assumes complete control over the partition and no arbitration of the file access is performed. It's like two people independently driving trying to drive the same car to different locations.
Depending on your set-up it is possible for the two machines to see and use different parts of the Xserve RAID storage but they cannot access the same areas without SAN doing the arbitration.
Hope that's clear,
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Hi
Did you check
http://datacenteroverlords.com/2013/04/01/jumbo-fc-frames/
Erik Smith says:
April 1, 2013 at 5:52 pm
April fools! I wish I saw this earlier, I would have posted corroborating test results!
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I was able to put a new UFS filesystem on LUN 0 (newfs), mount it, and copy data to it. The disk naming convention that Solaris shows for the SAN disks is pretty wild and I usually have to reference a Solaris book on the standard scsi disk name formats. My question/confusion at the moment is that I have 3 Sun branded Qlogic HBA's in the Sun T5220 server - QLE2462 (dual port) with one port on two of the HBAs cabled to the Qlogic 5602 FC switch which is cabled to the A and B controller of the SAN 2540 - there are only 2 cables coming out of the 5220; the 3rd HBA (for future use) has no cables to it. Both ports show up as active and connected on the server down to the SAN and the CAM 6.5 software automatically identified both initiators (ports) on the Sun 5220 when I mapped them. I had previously mapped them to the Sun host, mapped the host to a host_group, virtual disks to volumes, volumes to....etc.; and was able to put data on the exposed volume named dev_vol1 which is a RAID5 virtual disk on the SAN.
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Error -36 + Fibre Channel Error Log

K, so I ran into a very strange occurance.
While attempting to copy a 250GB folder of media from one pool to another on an xsan volume, I ended up hitting a single 500 MB file that kept giving me "error -36" in the finder.
After the third try, I ended up copying the file to my desktop, deleting it from the xsan volume, recopying it back over and then attempting the copy again from pool to pool, and voila!
Now the odd thing, when I tried to copy that file and got that error, all 3 times, I got a notification email that looked something like this:
Fibre channel activity and failures:
03:18:02: Path 50:00:39:30:00:01:17:A6 is no longer available
03:18:02: Path 50:00:39:30:00:00:9E:99 is no longer available
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03:18:02: Path 50:00:39:30:00:00:6E:13 is no longer available
03:18:02: Path 50:00:39:30:00:00:62:8E is no longer available
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That's odd. /.journal is a hidden file, and not a standard one on an OSX drive.
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You could look at it via #A3 in the Time Machine - Troubleshooting *User Tip,* also at the top of this forum.
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Thanks
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Fibre Channel is OFFLINE Errors and A1000

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