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[SCSI] zfcp: Add traces for state changes.

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This patch writes a trace record which provides information about state
changes for adapters, ports and units, e.g. target failure, targets becoming
online, targets being temporarily blocked due to pending recovery, targets
which have been recovered successfully etc.

Signed-off-by: Martin Peschke <mp3@de.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:
Martin Peschke
2008-03-27 14:22:02 +01:00
committed by James Bottomley
parent 348447e857
commit 698ec01635
10 changed files with 288 additions and 114 deletions
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drivers/s390/scsi/zfcp_scsi.c
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@@ -185,7 +185,7 @@ static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
atomic_clear_mask(ZFCP_STATUS_UNIT_REGISTERED, &unit->status);
sdpnt->hostdata = NULL;
unit->device = NULL;
zfcp_erp_unit_failed(unit);
zfcp_erp_unit_failed(unit, 12, 0);
zfcp_unit_put(unit);
} else
ZFCP_LOG_NORMAL("bug: no unit associated with SCSI device at "