Hi,
We performed an upgrade of one of our two FS7300's over the weekend from 8.5.0.5 to 8.5.0.9, an upgrade finished at approx 10:30 in the morning Saturday. The FS7300 is one of two FS7300's, both sitting behind a 6 node SVC cluster. We came in on Monday to find we have three "Number of device logins reduced" error messages in the event log of the FS7300, which happened in the early hours of Sunday, some 14.5 hours post upgrade. Strange we thought, we don't get those at the backend storage, but anyway, lets go through the fix procedure to re-scan and hopefully clear the errors. Unfortunately none of three cleared, they all fail with:
The disk discovery succeed but failed to find storage system n. The configuration might still be valid
So on further investigation, using the lsfabric CLI command, and the equivalent output in the "Fibre Channel Connectivity" GUI screens, we can see 3 of the SVC host nodes are reporting 4 out of 24 FC connections reporting as Type "Storage System", and not as "Host", we would expect for an FS7x00 being behind an SVC all 24 as a Host. The other 3 SVC nodes are reporting fine with all 24 x FC Connectivity Type of Host.
This got us thinking, we upgraded our other FS7300 to 8.5.0.9 previous to this one, but with no "...device login.." errors, how does it's FC Connectivity look, and we found it also had only one SVC host node with 4 out of 24 FC connections showing as a Type of Storage System, and no Host.
From the SVC end, we have no errors, we have full paths in place to all the backend storage systems as expected, whether that be the FS7300's with issues, or the 7200's, or v5k. The SVC is showing all FC Connectivity to Storage Systems as Type "Storage System".
So we have an SVC showing storage as storage, one backend FS7300 showing 12 x FC Host node connections as Storage System, one FS7300 showing 4 x FC SVC host node as Storage System, and one of the FS7300 having "....device login...." errors.
So where do we go from here, how do we get back to a full backend Host FC connection for all SVC nodes, and how do we clear the "....device login...." errors on the FS7300, anyone have any ideas?
Shout if you need any further info and we'll get back to you, or if you recommend a support case raised we'll do that.
Cheers, Andy
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Andy 91717
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