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test-tool: add COMPARE AND WRITE MiscompareSense test

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This test checks regular sense/ascq values on miscompare as well as
the Information sense field, which should be set as follows:
  sense key set to MISCOMPARE and the additional sense code set to
  MISCOMPARE DURING VERIFY OPERATION. In the sense data (see 4.18 and
  SPC-5) the offset from the start of the Data-Out Buffer to the first
  byte of data that was not equal shall be reported in the INFORMATION
  field.

Signed-off-by: David Disseldorp <ddiss@suse.de>
This commit is contained in:
David Disseldorp
2020-10-15 01:03:10 +02:00
parent 53c58f8aea
commit 957cc96232
3 changed files with 78 additions and 0 deletions
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1
test-tool/iscsi-test-cu.c
View File

@@ -68,6 +68,7 @@ static CU_TestInfo tests_compareandwrite[] = {
{ "Simple", test_compareandwrite_simple },
{ "DpoFua", test_compareandwrite_dpofua },
{ "Miscompare", test_compareandwrite_miscompare },
{ "MiscompareSense", test_compareandwrite_miscompare_sense },
{ "Unwritten", test_compareandwrite_unwritten },
{ "InvalidDataOutSize",
test_compareandwrite_invalid_dataout_size },

1
test-tool/iscsi-test-cu.h
View File

@@ -54,6 +54,7 @@ void test_teardown(void);
void test_compareandwrite_simple(void);
void test_compareandwrite_dpofua(void);
void test_compareandwrite_miscompare(void);
void test_compareandwrite_miscompare_sense(void);
void test_compareandwrite_unwritten(void);
void test_compareandwrite_invalid_dataout_size(void);

76
test-tool/test_compareandwrite_miscompare.c
View File

@@ -158,3 +158,79 @@ test_compareandwrite_miscompare(void)
}
}
}
void
test_compareandwrite_miscompare_sense(void)
{
unsigned i;
CHECK_FOR_DATALOSS;
CHECK_FOR_SBC;
CHECK_FOR_ISCSI(sd);
if (inq_bl->max_cmp < 1) {
logging(LOG_NORMAL, "[SKIPPED] COMPAREANDWRITE "
"max_cmp less than 1.");
CU_PASS("[SKIPPED] single block COMPAREANDWRITE not supported "
"Skipping test");
return;
}
logging(LOG_VERBOSE, LOG_BLANK_LINE);
logging(LOG_VERBOSE, "Test COMPARE_AND_WRITE of 1 block at the "
"start of the LUN");
logging(LOG_VERBOSE, "Write 1 block of 'A' at LBA:0");
memset(scratch, 'A', 2 * block_size);
WRITE16(sd, 0, block_size,
block_size, 0, 0, 0, 0, 0, scratch,
EXPECT_STATUS_GOOD);
memset(scratch + block_size, 'B', block_size);
logging(LOG_VERBOSE, "Overwrite blocks with 'B' "
"at LBA:0 (if they all contain 'A')");
COMPAREANDWRITE(sd, 0,
scratch, 2 * block_size, block_size,
0, 0, 0, 0,
EXPECT_STATUS_GOOD);
/* we've confirmed that c&w is supported, time for the proper test... */
logging(LOG_VERBOSE, "Vary location of miscompare in %zd bytes and check"
"sense", block_size);
memset(scratch + block_size, 'C', block_size);
for (i = 0; i < block_size; i++) {
struct scsi_task *tsk;
struct scsi_iovec iov;
logging(LOG_VERBOSE, "Fill buffer with 'B' except for %d "
"offset", i);
memset(scratch, 'B', block_size);
scratch[i] = 'Z';
tsk = scsi_cdb_compareandwrite(0, 2 * block_size, block_size,
0, 0, 0, 0, 0);
CU_ASSERT(tsk != NULL);
iov.iov_base = scratch;
iov.iov_len = 2 * block_size;
scsi_task_set_iov_out(tsk, &iov, 1);
tsk = iscsi_scsi_command_sync(sd->iscsi_ctx, sd->iscsi_lun,
tsk, NULL);
CU_ASSERT_FATAL(tsk != NULL);
CU_ASSERT(tsk->status == SCSI_STATUS_CHECK_CONDITION);
CU_ASSERT(tsk->sense.key == SCSI_SENSE_MISCOMPARE);
CU_ASSERT(tsk->sense.ascq
== SCSI_SENSE_ASCQ_MISCOMPARE_DURING_VERIFY);
if (tsk->sense.info_valid) {
logging(LOG_VERBOSE, "Check Information field provided"
" with miscompare sense response");
CU_ASSERT_EQUAL(tsk->sense.information, i);
}
scsi_free_scsi_task(tsk);
}
}