03-15-2016
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
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