* SCSI error handle trace
@ 2013-10-23 7:01 Junliang Li
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From: Junliang Li @ 2013-10-23 7:01 UTC (permalink / raw)
To: linux-scsi
Hi, all
Recently, fnic driver patches a feature that gathers various important
stats for debugging issues. Sysadm can find problems via this trace
utility, but just for fnic driver.
In Linux SCSI subsystem, only a few trace points are set and we can not
trace deeply while middle layer handles error. AFAIK,
scsi_dispatch_cmd_error is available for running command error in LLD,
but how about Fibre Channel error or something like that?
A RAS tool named rasdaemon can use trace info to record errors. Now it
supports cpu, memory and PCIe error recording. If SCSI subsystem exports
more trace points, I think we can support SCSI error recording in
rasdaemon.
Best regards,
Junliang Li
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