b9dd210194
This test issues a logical unit reset iSCSI TMF request, and then confirms that all paths report a subsequent unit attention condition. Signed-off-by: David Disseldorp <ddiss@suse.de>
103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/*
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Copyright (C) 2013 Ronnie Sahlberg <ronniesahlberg@gmail.com>
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Copyright (C) 2015 David Disseldorp
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <CUnit/CUnit.h>
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#include "iscsi.h"
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#include "scsi-lowlevel.h"
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#include "iscsi-support.h"
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#include "iscsi-test-cu.h"
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#include "iscsi-multipath.h"
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#define MPATH_MAX_TUR_RETRIES 5
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static int
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test_iscsi_tur_until_good(struct scsi_device *iscsi_sd,
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int *num_uas)
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{
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int num_turs;
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*num_uas = 0;
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for (num_turs = 0; num_turs < MPATH_MAX_TUR_RETRIES; num_turs++) {
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struct scsi_task *tsk;
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tsk = iscsi_testunitready_sync(iscsi_sd->iscsi_ctx,
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iscsi_sd->iscsi_lun);
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if (tsk->status == SCSI_STATUS_GOOD) {
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logging(LOG_VERBOSE, "TUR good after %d retries",
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num_turs);
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return 0;
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} else if ((tsk->status == SCSI_STATUS_CHECK_CONDITION)
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&& (tsk->sense.key == SCSI_SENSE_UNIT_ATTENTION)) {
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logging(LOG_VERBOSE, "Got UA for TUR");
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(*num_uas)++;
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} else {
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logging(LOG_NORMAL, "unexpected non-UA failure: %d,%d",
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tsk->status, tsk->sense.key);
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}
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}
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return -ETIMEDOUT;
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}
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void
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test_multipathio_reset(void)
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{
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int reset_path;
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CHECK_FOR_DATALOSS;
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CHECK_FOR_SBC;
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MPATH_SKIP_IF_UNAVAILABLE(mp_sds, mp_num_sds);
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MPATH_SKIP_UNLESS_ISCSI(mp_sds, mp_num_sds);
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logging(LOG_VERBOSE, LOG_BLANK_LINE);
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for (reset_path = 0; reset_path < mp_num_sds; reset_path++) {
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int num_uas;
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int ret;
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int tur_path;
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struct scsi_device *reset_sd = mp_sds[reset_path];
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logging(LOG_VERBOSE, "Awaiting good TUR");
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ret = test_iscsi_tur_until_good(reset_sd, &num_uas);
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CU_ASSERT_EQUAL(ret, 0);
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logging(LOG_VERBOSE,
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"Test multipath LUN Reset using path %d", reset_path);
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ret = iscsi_task_mgmt_lun_reset_sync(reset_sd->iscsi_ctx,
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reset_sd->iscsi_lun);
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if (ret != 0) {
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logging(LOG_NORMAL, "LUN reset failed. %s",
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iscsi_get_error(reset_sd->iscsi_ctx));
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}
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CU_ASSERT_EQUAL(ret, 0);
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/* check for and clear LU reset UA on all paths */
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for (tur_path = 0; tur_path < mp_num_sds; tur_path++) {
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logging(LOG_VERBOSE, "check for LU reset unit "
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"attention via TUR on path %d", tur_path);
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ret = test_iscsi_tur_until_good(mp_sds[tur_path], &num_uas);
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CU_ASSERT_EQUAL(ret, 0);
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CU_ASSERT_NOT_EQUAL(num_uas, 0);
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}
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}
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}
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