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-rw-r--r--drivers/target/target_core_transport.c7
-rw-r--r--drivers/target/target_core_xcopy.c22
-rw-r--r--include/target/target_core_base.h1
3 files changed, 24 insertions, 6 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 00ec46413146..000bc6d077ea 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1706,6 +1706,7 @@ void transport_generic_request_failure(struct se_cmd *cmd,
case TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED:
case TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED:
case TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED:
+ case TCM_COPY_TARGET_DEVICE_NOT_REACHABLE:
break;
case TCM_OUT_OF_RESOURCES:
sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
@@ -2873,6 +2874,12 @@ static const struct sense_info sense_info_table[] = {
.ascq = 0x03, /* LOGICAL BLOCK REFERENCE TAG CHECK FAILED */
.add_sector_info = true,
},
+ [TCM_COPY_TARGET_DEVICE_NOT_REACHABLE] = {
+ .key = COPY_ABORTED,
+ .asc = 0x0d,
+ .ascq = 0x02, /* COPY TARGET DEVICE NOT REACHABLE */
+
+ },
[TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE] = {
/*
* Returning ILLEGAL REQUEST would cause immediate IO errors on
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 75cd85426ae3..f2a1443ecb33 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -104,7 +104,7 @@ static int target_xcopy_locate_se_dev_e4(struct se_cmd *se_cmd, struct xcopy_op
}
mutex_unlock(&g_device_mutex);
- pr_err("Unable to locate 0xe4 descriptor for EXTENDED_COPY\n");
+ pr_debug_ratelimited("Unable to locate 0xe4 descriptor for EXTENDED_COPY\n");
return -EINVAL;
}
@@ -185,7 +185,7 @@ static int target_xcopy_parse_tiddesc_e4(struct se_cmd *se_cmd, struct xcopy_op
static int target_xcopy_parse_target_descriptors(struct se_cmd *se_cmd,
struct xcopy_op *xop, unsigned char *p,
- unsigned short tdll)
+ unsigned short tdll, sense_reason_t *sense_ret)
{
struct se_device *local_dev = se_cmd->se_dev;
unsigned char *desc = p;
@@ -193,6 +193,8 @@ static int target_xcopy_parse_target_descriptors(struct se_cmd *se_cmd,
unsigned short start = 0;
bool src = true;
+ *sense_ret = TCM_INVALID_PARAMETER_LIST;
+
if (offset != 0) {
pr_err("XCOPY target descriptor list length is not"
" multiple of %d\n", XCOPY_TARGET_DESC_LEN);
@@ -243,9 +245,16 @@ static int target_xcopy_parse_target_descriptors(struct se_cmd *se_cmd,
rc = target_xcopy_locate_se_dev_e4(se_cmd, xop, true);
else
rc = target_xcopy_locate_se_dev_e4(se_cmd, xop, false);
-
- if (rc < 0)
+ /*
+ * If a matching IEEE NAA 0x83 descriptor for the requested device
+ * is not located on this node, return COPY_ABORTED with ASQ/ASQC
+ * 0x0d/0x02 - COPY_TARGET_DEVICE_NOT_REACHABLE to request the
+ * initiator to fall back to normal copy method.
+ */
+ if (rc < 0) {
+ *sense_ret = TCM_COPY_TARGET_DEVICE_NOT_REACHABLE;
goto out;
+ }
pr_debug("XCOPY TGT desc: Source dev: %p NAA IEEE WWN: 0x%16phN\n",
xop->src_dev, &xop->src_tid_wwn[0]);
@@ -816,7 +825,8 @@ out:
xcopy_pt_undepend_remotedev(xop);
kfree(xop);
- pr_warn("target_xcopy_do_work: Setting X-COPY CHECK_CONDITION -> sending response\n");
+ pr_warn_ratelimited("target_xcopy_do_work: rc: %d, Setting X-COPY CHECK_CONDITION"
+ " -> sending response\n", rc);
ec_cmd->scsi_status = SAM_STAT_CHECK_CONDITION;
target_complete_cmd(ec_cmd, SAM_STAT_CHECK_CONDITION);
}
@@ -875,7 +885,7 @@ sense_reason_t target_do_xcopy(struct se_cmd *se_cmd)
" tdll: %hu sdll: %u inline_dl: %u\n", list_id, list_id_usage,
tdll, sdll, inline_dl);
- rc = target_xcopy_parse_target_descriptors(se_cmd, xop, &p[16], tdll);
+ rc = target_xcopy_parse_target_descriptors(se_cmd, xop, &p[16], tdll, &ret);
if (rc <= 0)
goto out;
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index fb8e3b6febdf..c2119008990a 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -177,6 +177,7 @@ enum tcm_sense_reason_table {
TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15),
TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16),
TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17),
+ TCM_COPY_TARGET_DEVICE_NOT_REACHABLE = R(0x18),
#undef R
};