On 04/28/2016 08:40 AM, James Bottomley wrote:
Well, the entire room, that's vendors, users and implementors complained that path failover takes far too long. I think in their minds this is enough substance to go on.
The only complaints I heard about path failover taking too long came from people working on FC drivers. Aren't SCSI transport layer implementations expected to fail I/O after fast_io_fail_tmo expired instead of waiting until the SCSI error handler has finished? If so, why is it considered an issue that error handling for the FC protocol can take very long (hours)?
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