Hi all.
I found something that looks like a bug.
The configuration is the following:
Dual CPU machine with Linux RedHat 7.1 running kernel 2.4.17
(official), connected to SAN with two FC-HBAs (QLogic 2200).
Bug appears when I am starting two processes, first doing I/O
to first LUN through first HBA and second doing I/O to second
LUN through second HBA. When I am disconnecting first HBA
from the SAN, machine getting into four minute SCSI error
recovery and then first process exits with I/O error as it
should, while second process getting stacked and never
returns (this is the problem - it should continue doing I/O
like nothing happend).
This problem appearing on SMP kernel. On UP kernel,
everything works fine.
I found this while I was working on volume manager driver.
This driver should be able to do fail over to another HBA (if
available) in case of error.
I have all required hardware and software to work out this
problem so I'll be glad to give a hand to who ever can
(should?) or/and will start working on this.
Alexandr Sandler.
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This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:00:28 EST