[SCSI] zfcp: Improve reliability of SCSI eh handlers in zfcp

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When the SCSI midlayer is running error recovery, the low-level error
recovery in zfcp could be running and preventing the SCSI midlayer to
issue error recovery requests. To avoid unnecessary error recovery
escalation, wait for the zfcp erp to finish and retry if necessary.

While reworking the SCSI eh handlers, alsa cleanup the code and
simplify the interface from zfcp_scsi to the fsf layer.

Acked-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

...

This commit is contained in:

Christof Schmitt 2009-03-02 13:09:00 +01:00 • committed by James Bottomley

parent 92cab0d93a

commit 63caf367e1

4 changed files with 78 additions and 99 deletions

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3

drivers/s390/scsi/zfcp_def.h

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11

drivers/s390/scsi/zfcp_ext.h

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39

drivers/s390/scsi/zfcp_fsf.c

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122

drivers/s390/scsi/zfcp_scsi.c

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