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SBC: Add support for WRITESAME10 and a simple test for using writesame10 to unmap blocks from thin provisioned luns

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This commit is contained in:
Ronnie Sahlberg
2012-04-28 13:55:37 +10:00
parent dc01df1e00
commit cc0fa15e14
9 changed files with 278 additions and 1 deletions
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141
test-tool/0180_writesame10_unmap.c Normal file
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@@ -0,0 +1,141 @@
/*
Copyright (C) 2012 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "iscsi.h"
#include "scsi-lowlevel.h"
#include "iscsi-test.h"
int T0180_writesame10_unmap(const char *initiator, const char *url)
{
struct iscsi_context *iscsi;
struct scsi_task *task;
struct scsi_readcapacity16 *rc16;
int ret, i, lun;
uint32_t block_size, num_blocks;
int lbppb;
iscsi = iscsi_context_login(initiator, url, &lun);
if (iscsi == NULL) {
printf("Failed to login to target\n");
return -1;
}
/* find the size of the LUN */
task = iscsi_readcapacity16_sync(iscsi, lun);
if (task == NULL) {
printf("Failed to send readcapacity16 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status != SCSI_STATUS_GOOD) {
printf("Readcapacity command: failed with sense. %s\n", iscsi_get_error(iscsi));
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
rc16 = scsi_datain_unmarshall(task);
if (rc16 == NULL) {
printf("failed to unmarshall readcapacity16 data. %s\n", iscsi_get_error(iscsi));
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
if (rc16->lbpme == 0){
printf("Logical unit is fully provisioned. Skipping test\n");
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
block_size = rc16->block_length;
num_blocks = rc16->returned_lba;
lbppb = 1 << rc16->lbppbe;
scsi_free_scsi_task(task);
if (!data_loss) {
printf("--dataloss flag is not set. Skipping test\n");
ret = -1;
goto finished;
}
ret = 0;
/* unmap the first 1 - 256 blocks at the start of the LUN */
printf("Unmapping first 1-256 blocks ... ");
for (i=1; i<=256; i++) {
/* only try unmapping whole physical blocks */
if (i % lbppb) {
continue;
}
task = iscsi_writesame10_sync(iscsi, lun, NULL, 0,
0, i,
0, 1, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITESAME10 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status != SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITESAME10 command: failed with sense. %s\n", iscsi_get_error(iscsi));
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
}
printf("[OK]\n");
/* unmap the last 1 - 256 blocks at the end of the LUN */
printf("Unmapping last 1-256 blocks ... ");
for (i=1; i<=256; i++) {
/* only try unmapping whole physical blocks */
if (i % lbppb) {
continue;
}
task = iscsi_writesame10_sync(iscsi, lun, NULL, 0,
num_blocks + 1 - i, i,
0, 1, 0, 0, 0, 0);
if (task == NULL) {
printf("[FAILED]\n");
printf("Failed to send WRITESAME10 command: %s\n", iscsi_get_error(iscsi));
ret = -1;
goto finished;
}
if (task->status != SCSI_STATUS_GOOD) {
printf("[FAILED]\n");
printf("WRITESAME10 command: failed with sense. %s\n", iscsi_get_error(iscsi));
ret = -1;
scsi_free_scsi_task(task);
goto finished;
}
scsi_free_scsi_task(task);
}
printf("[OK]\n");
finished:
iscsi_logout_sync(iscsi);
iscsi_destroy_context(iscsi);
return ret;
}

3
test-tool/iscsi-test.c
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@@ -72,6 +72,9 @@ struct scsi_test tests[] = {
{ "T0170_unmap_simple", T0170_unmap_simple },
{ "T0171_unmap_zero", T0171_unmap_zero },
/* writesame10*/
{ "T0180_writesame10_unmap", T0180_writesame10_unmap },
{ NULL, NULL }
};

2
test-tool/iscsi-test.h
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@@ -47,3 +47,5 @@ int T0160_readcapacity16_simple(const char *initiator, const char *url);
int T0170_unmap_simple(const char *initiator, const char *url);
int T0171_unmap_zero(const char *initiator, const char *url);
int T0180_writesame10_unmap(const char *initiator, const char *url);