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| author | Steffen Maier <maier@linux.ibm.com> | 2018-05-17 19:14:43 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-05-18 17:22:10 +0200 |
| commit | df30781699f53e4fd4c494c6f7dd16e3d5c21d30 (patch) | |
| tree | ce66a5ca73f33aafe1309dccb81dea2b7370c1e1 /Documentation/kobject.txt | |
| parent | scsi: cxlflash: Isolate external module dependencies (diff) | |
| download | linux-df30781699f53e4fd4c494c6f7dd16e3d5c21d30.tar.xz linux-df30781699f53e4fd4c494c6f7dd16e3d5c21d30.zip | |
scsi: zfcp: fix missing SCSI trace for result of eh_host_reset_handler
For problem determination we need to see whether and why we were successful
or not. This allows deduction of scsi_eh escalation.
Example trace record formatted with zfcpdbf from s390-tools:
Timestamp : ...
Area : SCSI
Subarea : 00
Level : 1
Exception : -
CPU ID : ..
Caller : 0x...
Record ID : 1
Tag : schrh_r SCSI host reset handler result
Request ID : 0x0000000000000000 none (invalid)
SCSI ID : 0xffffffff none (invalid)
SCSI LUN : 0xffffffff none (invalid)
SCSI LUN high : 0xffffffff none (invalid)
SCSI result : 0x00002002 field re-used for midlayer value: SUCCESS
or in other cases: 0x2009 == FAST_IO_FAIL
SCSI retries : 0xff none (invalid)
SCSI allowed : 0xff none (invalid)
SCSI scribble : 0xffffffffffffffff none (invalid)
SCSI opcode : ffffffff ffffffff ffffffff ffffffff none (invalid)
FCP rsp inf cod: 0xff none (invalid)
FCP rsp IU : 00000000 00000000 00000000 00000000 none (invalid)
00000000 00000000
v2.6.35 commit a1dbfddd02d2 ("[SCSI] zfcp: Pass return code from
fc_block_scsi_eh to scsi eh") introduced the first return with something
other than the previously hardcoded single SUCCESS return path.
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Fixes: a1dbfddd02d2 ("[SCSI] zfcp: Pass return code from fc_block_scsi_eh to scsi eh")
Cc: <stable@vger.kernel.org> #2.6.38+
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'Documentation/kobject.txt')
0 files changed, 0 insertions, 0 deletions