Receiving: 4B436A3D 0313233216 T H fscsi0 LINK ERROR Post: 302968831

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Operating Systems AIX Receiving: 4B436A3D 0313233216 T H fscsi0 LINK ERROR Post 302968831 by agent.kgb on Tuesday 15th of March 2016 03:31:36 AM

03-15-2016

Registered User

the first error you receive - FCP_ERR4 4B436A3D - according to the sense information provided means, that AIX driver sent RESET command to the SAN device and didn't receive an answer. Usually it means, you have a SAN problem and you should open a case with your SAN switch or better - storage device vendor.

But as far as I see from the output of lsattr -El fscsi0 you don't have SAN. You have a direct-attached storage. If you have a SAN fabric, not a direct-attached storage, then you have a problem connecting to the fabric, mostly a broken cable is the cause.

If you really have a direct-attached storage, then I have some other question:
- how many LDEVs/LUNs do you receive from the storage?
- does the problem happen only with this LDEV (Nr. 00:00:00:00:00:00:00:02) or also with other LDEVs?
- is the storage connected through multiple adapters or is it the only adapter to the storage?
- how many different storages are connected using this adapter?

If it is a single storage directly connected through the single adapter, I would recommend:
- to check the cable
- to switch off dyntrk and fc_err_recov
- to minimize max_xfer_size and corresponding parameters on the hdisk

agent.kgb

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LEARN ABOUT CENTOS

iprupdate

IPRUPDATE(8)						      System Manager's Manual						      IPRUPDATE(8)

NAME

       iprupdate - IBM Power RAID adapter/device microcode update utility

SYNOPSIS

       iprupdate

       iprupdate --debug --check_only --daemon --use-polling --use-uevents

DESCRIPTION

       iprupdate  is used to update the microcode on IBM storage adapters and the disk units attached to them to a minimum supported level. It can
       be run at any time while the ipr device driver is loaded. The utility will check the microcode revision level of each storage  adapter/disk
       unit  on  the  system  and  compare  it	to  the  microcode  revision  level  that  is installed in /etc/microcode, /usr/lib/microcode, and
       /lib/firmware.  If the microcode level on the adapter/device is below the minimum supported level and the level	of  the  latest  image	is
       newer, the microcode will be updated to the latest level available. It is desired that this be called in the boot process.

OPTIONS

       --version
	      Print the version number of iprupdate

       --debug
	      Enable additional error logging. Enabling this will result in additional errors logging to /var/log/messages.

       --check_only
	      Check if any adapters or disk units are below their minimum supported level.

       --daemon
	      Run as a daemon to handle adapters and devices being hotplugged.

       --use-polling
	      Do not use netlink/uevent notification, but rather poll for adapter and device configuration changes.

       --use-uevents
	      Use  netlink/uevent notification rather than polling for adapter and device configuration changes. If not specified, polling will be
	      used until the first uevent notification appears, then netlink will be used.

AUTHOR

       Brian King (brking@us.ibm.com)

								   February 2005						      IPRUPDATE(8)