Re: Errors on fiber channel adapter.

From: James Jackson (James.Jackson@MAIL.STATE.AR.US)
Date: Fri Aug 01 2003 - 10:13:13 EDT


Jack,

Thanks for the advice. I will pursue it.

Regards,

James Jackson

-----Original Message-----
From: Coyle, Jack [mailto:Jack.Coyle@REXHEALTH.COM]
Sent: Thursday, July 31, 2003 5:26 PM
To: aix-l@Princeton.EDU
Subject: Re: Errors on fiber channel adapter.

Before you go tearing into the configuration, one thing you might want
to
carefully check is your connections. By virtue of the fact that you have
identified a 2105-F20 and a SAN and 6228 cards, somewhere in your fibre
connectivity you must have SC-LC converter cables. When we rolled in our
2105 expansion cabinet, the very act of rolling that behemoth across the
raised floor caused a SC-LC connector to become "slightly loose" and we
saw
random ERR2's and ERR4's. I went into the switch cabinet and "seated"
all of
the converter connections (did NOT take any apart - just ensured they
were
thoroughly mated) and our errors disappeared. May not be applicable to
your
situation, but it is worth a try.

Regards,

Jack Coyle
Rex Healthcare
(919) 784-3792
jack.coyle@rexhealth.com

> ----------
> From: James Jackson[SMTP:James.Jackson@MAIL.STATE.AR.US]
> Reply To: IBM AIX Discussion List
> Sent: Thursday, July 31, 2003 6:09 PM
> To: aix-l@Princeton.EDU
> Subject: Re: Errors on fiber channel adapter.
>
> No LUN sharing, though this is a non-concurrent HACMP config. The
problem
> is coincident with some work done on the SAN this past week-end. I'm
> trying to get more info on the SAN changes/upgrades etc.
>
> thx,
>
> JJackson
>
> -----Original Message-----
> From: Adams Kevin J [mailto:kevin.adams@PHS.COM]
> Sent: Thursday, July 31, 2003 4:53 PM
> To: aix-l@Princeton.EDU
> Subject: Re: Errors on fiber channel adapter.
>
>
> You're not sharing LUNs between hosts are you?
>
> Jjust having an hdisk seen by more than one host can cause these
> symptoms when not using the right verion of SDD.
>
> Kevin Adams
> PacifiCare Behavioral Health
> Principal Systems Analyst
> AIX Certified Advanced Technical Expert
>
> -----Original Message-----
> From: James Jackson
[mailto:James.Jackson@MAIL.STATE.AR.US]
> Sent: Thursday, July 31, 2003 2:21 PM
> To: aix-l@Princeton.EDU
> Subject: [aix-l] Errors on fiber channel adapter.
>
>
>
> Gurus,
>
> I have an M80 with a pair of 6228 FC adapters. One of
the
> adapters is sending periodic FSCSI_ERR2's accompanied by occasional
> SC_DISK_ERR4's from its child "hdisks". The adapters are connected to
an
> F20 ESS via a SAN. I'm using SDD for path redundancy, and I have a
single
> volume group which contains two vpaths. Each vpath has six "hdisks",
> three from each 6228. I need to run diag on the flaky 6228, but I
don't
> want to varyoff the volume group. Does anyone know if the following
> procedure will work as a means of getting the 6228 in a state that'll
> support diag?
>
> * run "datapath set adapter 1 offline", which will
> cease SDD I/O to adapter 1, setting its hdisks' state to "DEAD".
> * run "rmdev -l" on the child hdisks and fscsi1
> device.
> *
>
> If this works, will the following procedure get
everything
> back to normal?
>
> * run "cfgmgr -l fcs1".
> * run "datapath set adapter 1 online".
> *
>
> TIA,
>
> James Jackson
>
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