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test/iscsi-support: PR Out CLEAR helper function

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Add a helper function to dispatch Persistent Reserve Out requests with
CLEAR service action.

Signed-off-by: David Disseldorp <ddiss@suse.de>
This commit is contained in:
David Disseldorp
2015-09-18 17:58:42 +02:00
parent a569d55a0e
commit a90e5a3d4c
2 changed files with 50 additions and 0 deletions
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49
test-tool/iscsi-support.c
View File

@@ -973,6 +973,55 @@ prout_release(struct scsi_device *sdev,
return ret;
}
int
prout_clear(struct scsi_device *sdev, unsigned long long key)
{
struct scsi_persistent_reserve_out_basic poc;
struct scsi_task *task;
int ret = 0;
/* reserve the target using specified reservation type */
logging(LOG_VERBOSE,
"Send PROUT/CLEAR to clear all registrations and any PR "
"reservation");
if (!data_loss) {
printf("--dataloss flag is not set in. Skipping PROUT\n");
return -1;
}
memset(&poc, 0, sizeof (poc));
poc.reservation_key = key;
task = scsi_cdb_persistent_reserve_out(
SCSI_PERSISTENT_RESERVE_CLEAR,
SCSI_PERSISTENT_RESERVE_SCOPE_LU,
0, &poc);
assert(task != NULL);
task = send_scsi_command(sdev, task, NULL);
if (task == NULL) {
logging(LOG_NORMAL,
"[FAILED] Failed to send PROUT command: %s",
iscsi_get_error(sdev->iscsi_ctx));
return -1;
}
if (status_is_invalid_opcode(task)) {
scsi_free_scsi_task(task);
logging(LOG_NORMAL, "[SKIPPED] PERSISTENT RESERVE OUT is not implemented.");
return -2;
}
if (task->status != SCSI_STATUS_GOOD) {
logging(LOG_NORMAL,
"[FAILED] PROUT command: failed with sense. %s",
iscsi_get_error(sdev->iscsi_ctx));
ret = -1;
}
scsi_free_scsi_task(task);
return ret;
}
int
prin_verify_reserved_as(struct scsi_device *sdev,
unsigned long long key, enum scsi_persistent_out_type pr_type)

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

@@ -273,6 +273,7 @@ int prout_reserve(struct scsi_device *sdev,
unsigned long long key, enum scsi_persistent_out_type pr_type);
int prout_release(struct scsi_device *sdev,
unsigned long long key, enum scsi_persistent_out_type pr_type);
int prout_clear(struct scsi_device *sdev, unsigned long long key);
int prin_verify_not_reserved(struct scsi_device *sdev);
int prin_verify_reserved_as(struct scsi_device *sdev,
unsigned long long key, enum scsi_persistent_out_type pr_type);