Proper support of persistent reservation for multipath devices requires
communication with the multipath daemon, so that the reservation is
registered and applied when a path comes up. The device mapper
utilities provide a library to do so; this patch makes qemu-pr-helper.c
detect multipath devices and, when one is found, delegate the operation
to libmpathpersist.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
Makefile | 3 +
configure | 57 ++++++++-
docs/pr-manager.rst | 27 +++++
include/scsi/utils.h | 6 +
scsi/qemu-pr-helper.c | 311 +++++++++++++++++++++++++++++++++++++++++++++++++-
scsi/utils.c | 15 +++
6 files changed, 414 insertions(+), 5 deletions(-)
diff --git a/Makefile b/Makefile
index bfd4f69ecd..f1acaad05b 100644
--- a/Makefile
+++ b/Makefile
@@ -388,6 +388,9 @@ fsdev/virtfs-proxy-helper$(EXESUF):
fsdev/virtfs-proxy-helper.o fsdev/9p-marshal
fsdev/virtfs-proxy-helper$(EXESUF): LIBS += -lcap
scsi/qemu-pr-helper$(EXESUF): scsi/qemu-pr-helper.o scsi/utils.o
$(crypto-obj-y) $(io-obj-y) $(qom-obj-y) $(COMMON_LDADDS)
+ifdef CONFIG_MPATH
+scsi/qemu-pr-helper$(EXESUF): LIBS += -ludev -lmultipath -lmpathpersist
+endif
qemu-img-cmds.h: $(SRC_PATH)/qemu-img-cmds.hx $(SRC_PATH)/scripts/hxtool
$(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< >
$@,"GEN","$@")
diff --git a/configure b/configure
index 772aff18d6..d3c9371f7c 100755
--- a/configure
+++ b/configure
@@ -286,6 +286,7 @@ pixman=""
sdl=""
sdlabi=""
virtfs=""
+mpath=""
vnc="yes"
sparse="no"
vde=""
@@ -948,6 +949,10 @@ for opt do
;;
--enable-virtfs) virtfs="yes"
;;
+ --disable-mpath) mpath="no"
+ ;;
+ --enable-mpath) mpath="yes"
+ ;;
--disable-vnc) vnc="no"
;;
--enable-vnc) vnc="yes"
@@ -1491,6 +1496,7 @@ disabled with --disable-FEATURE, default is enabled if
available:
vnc-png PNG compression for VNC server
cocoa Cocoa UI (Mac OS X only)
virtfs VirtFS
+ mpath Multipath persistent reservation passthrough
xen xen backend driver support
xen-pci-passthrough
brlapi BrlAPI (Braile)
@@ -3336,6 +3342,29 @@ else
fi
##########################################
+# libmpathpersist probe
+
+if test "$mpath" != "no" ; then
+ cat > $TMPC <<EOF
+#include <libudev.h>
+#include <mpath_persist.h>
+unsigned mpath_mx_alloc_len = 1024;
+int logsink;
+int main(void) {
+ struct udev *udev = udev_new();
+ mpath_lib_init(udev);
+}
+EOF
+ if compile_prog "" "-ludev -lmultipath -lmpathpersist" ; then
+ mpathpersist=yes
+ else
+ mpathpersist=no
+ fi
+else
+ mpathpersist=no
+fi
+
+##########################################
# libcap probe
if test "$cap" != "no" ; then
@@ -5070,16 +5099,34 @@ if test "$want_tools" = "yes" ; then
fi
fi
if test "$softmmu" = yes ; then
- if test "$virtfs" != no ; then
- if test "$cap" = yes && test "$linux" = yes && test "$attr" = yes ; then
+ if test "$linux" = yes; then
+ if test "$virtfs" != no && test "$cap" = yes && test "$attr" = yes ; then
virtfs=yes
tools="$tools fsdev/virtfs-proxy-helper\$(EXESUF)"
else
if test "$virtfs" = yes; then
- error_exit "VirtFS is supported only on Linux and requires libcap
devel and libattr devel"
+ error_exit "VirtFS requires libcap devel and libattr devel"
fi
virtfs=no
fi
+ if test "$mpath" != no && test "$mpathpersist" = yes ; then
+ mpath=yes
+ tools="$tools mpath/qemu-mpath-helper\$(EXESUF)"
+ else
+ if test "$mpath" = yes; then
+ error_exit "Multipath requires libmpathpersist devel"
+ fi
+ mpath=no
+ fi
+ else
+ if test "$virtfs" = yes; then
+ error_exit "VirtFS is supported only on Linux"
+ fi
+ virtfs=no
+ if test "$mpath" = yes; then
+ error_exit "Multipath is supported only on Linux"
+ fi
+ mpath=no
fi
fi
@@ -5326,6 +5373,7 @@ echo "Audio drivers $audio_drv_list"
echo "Block whitelist (rw) $block_drv_rw_whitelist"
echo "Block whitelist (ro) $block_drv_ro_whitelist"
echo "VirtFS support $virtfs"
+echo "Multipath support $mpath"
echo "VNC support $vnc"
if test "$vnc" = "yes" ; then
echo "VNC SASL support $vnc_sasl"
@@ -5773,6 +5821,9 @@ fi
if test "$virtfs" = "yes" ; then
echo "CONFIG_VIRTFS=y" >> $config_host_mak
fi
+if test "$mpath" = "yes" ; then
+ echo "CONFIG_MPATH=y" >> $config_host_mak
+fi
if test "$vhost_scsi" = "yes" ; then
echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
fi
diff --git a/docs/pr-manager.rst b/docs/pr-manager.rst
index 7107e59fb8..9b1de198b1 100644
--- a/docs/pr-manager.rst
+++ b/docs/pr-manager.rst
@@ -60,6 +60,7 @@ system service and supports the following option:
-d, --daemon run in the background
-q, --quiet decrease verbosity
+-v, --verbose increase verbosity
-f, --pidfile=path PID file when running as a daemon
-k, --socket=path path to the socket
-T, --trace=trace-opts tracing options
@@ -82,3 +83,29 @@ its operation. To do this, add the following options:
-u, --user=user user to drop privileges to
-g, --group=group group to drop privileges to
+
+---------------------------------------------
+Multipath devices and persistent reservations
+---------------------------------------------
+
+Proper support of persistent reservation for multipath devices requires
+communication with the multipath daemon, so that the reservation is
+registered and applied when a path is newly discovered or becomes online
+again. :command:`qemu-pr-helper` can do this if the ``libmpathpersist``
+library was available on the system at build time.
+
+As of August 2017, a reservation key must be specified in ``multipath.conf``
+for ``multipathd`` to check for persistent reservation for newly
+discovered paths or reinstated paths. The attribute can be added
+to the ``defaults`` section or the ``multipaths`` section; for example::
+
+ multipaths {
+ multipath {
+ wwid XXXXXXXXXXXXXXXX
+ alias yellow
+ reservation_key 0x123abc
+ }
+ }
+
+Linking :program:`qemu-pr-helper` to ``libmpathpersist`` does not impede
+its usage on regular SCSI devices.
diff --git a/include/scsi/utils.h b/include/scsi/utils.h
index c12b34f2e5..c626be2c78 100644
--- a/include/scsi/utils.h
+++ b/include/scsi/utils.h
@@ -44,6 +44,8 @@ extern const struct SCSISense sense_code_LUN_NOT_READY;
extern const struct SCSISense sense_code_NO_MEDIUM;
/* LUN not ready, medium removal prevented */
extern const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED;
+/* Medium Error, Unrecoverable Read Error */
+extern const struct SCSISense sense_code_READ_ERROR;
/* Hardware error, internal target failure */
extern const struct SCSISense sense_code_TARGET_FAILURE;
/* Illegal request, invalid command operation code */
@@ -80,6 +82,8 @@ extern const struct SCSISense sense_code_CAPACITY_CHANGED;
extern const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM;
/* Unit attention, Power on, reset or bus device reset occurred */
extern const struct SCSISense sense_code_RESET;
+/* Unit attention, SCSI Bus Reset */
+extern const struct SCSISense sense_code_SCSI_BUS_RESET;
/* Unit attention, Medium may have changed*/
extern const struct SCSISense sense_code_MEDIUM_CHANGED;
/* Unit attention, Reported LUNs data has changed */
@@ -90,6 +94,8 @@ extern const struct SCSISense
sense_code_DEVICE_INTERNAL_RESET;
extern const struct SCSISense sense_code_WRITE_PROTECTED;
/* Data Protection, Space Allocation Failed Write Protect */
extern const struct SCSISense sense_code_SPACE_ALLOC_FAILED;
+/* Aborted Command, LUN Communication Failure */
+extern const struct SCSISense sense_code_LUN_COMM_FAILURE;
#define SENSE_CODE(x) sense_code_ ## x
diff --git a/scsi/qemu-pr-helper.c b/scsi/qemu-pr-helper.c
index d52234af0f..707bb6127b 100644
--- a/scsi/qemu-pr-helper.c
+++ b/scsi/qemu-pr-helper.c
@@ -51,6 +51,14 @@
#include <pwd.h>
#include <grp.h>
+#ifdef CONFIG_MPATH
+#define CONTROL_PATH "/dev/mapper/control"
+#include <libudev.h>
+#include "mpath_cmd.h"
+#include "mpath_persist.h"
+#endif
+
+QEMU_BUILD_BUG_ON(PR_HELPER_DATA_SIZE > MPATH_MAX_PARAM_LEN);
#define PR_OUT_FIXED_PARAM_SIZE 24
@@ -60,6 +68,7 @@ static enum { RUNNING, TERMINATE, TERMINATING } state;
static QIOChannelSocket *server_ioc;
static int server_watch;
static int num_active_sockets = 1;
+static int noisy;
static int verbose;
#ifdef CONFIG_LIBCAP
@@ -162,9 +171,290 @@ static int do_sgio(int fd, const uint8_t *cdb, uint8_t
*sense,
return thread_pool_submit_co(pool, do_sgio_worker, &data);
}
+/* Device mapper interface */
+
+#ifdef CONFIG_MPATH
+typedef struct DMData {
+ struct dm_ioctl dm;
+ uint8_t data[1024];
+} DMData;
+
+static int control_fd;
+
+static void *dm_ioctl(int ioc, struct dm_ioctl *dm)
+{
+ static DMData d;
+ memcpy(&d.dm, dm, sizeof(d.dm));
+ QEMU_BUILD_BUG_ON(sizeof(d.data) < sizeof(struct dm_target_spec));
+
+ d.dm.version[0] = DM_VERSION_MAJOR;
+ d.dm.version[1] = 0;
+ d.dm.version[2] = 0;
+ d.dm.data_size = 1024;
+ d.dm.data_start = offsetof(DMData, data);
+ if (ioctl(control_fd, ioc, &d) < 0) {
+ return NULL;
+ }
+ memcpy(dm, &d.dm, sizeof(d.dm));
+ return &d.data;
+}
+
+static void *dm_dev_ioctl(int fd, int ioc, struct dm_ioctl *dm)
+{
+ struct stat st;
+ int r;
+
+ r = fstat(fd, &st);
+ if (r < 0) {
+ perror("fstat");
+ exit(1);
+ }
+
+ dm->dev = st.st_rdev;
+ return dm_ioctl(ioc, dm);
+}
+
+static void dm_init(void)
+{
+ control_fd = open(CONTROL_PATH, O_RDWR);
+ if (control_fd < 0) {
+ perror("Cannot open " CONTROL_PATH);
+ exit(1);
+ }
+ struct dm_ioctl dm = { 0 };
+ if (!dm_ioctl(DM_VERSION, &dm)) {
+ perror("ioctl");
+ exit(1);
+ }
+ if (dm.version[0] != DM_VERSION_MAJOR) {
+ fprintf(stderr, "Unsupported device mapper interface");
+ exit(1);
+ }
+}
+
+/* Variables required by libmultipath and libmpathpersist. */
+unsigned mpath_mx_alloc_len = PR_HELPER_DATA_SIZE;
+int logsink;
+
+static void multipath_pr_init(void)
+{
+ static struct udev *udev;
+
+ udev = udev_new();
+ mpath_lib_init(udev);
+}
+
+static int is_mpath(int fd)
+{
+ struct dm_ioctl dm = { .flags = DM_NOFLUSH_FLAG };
+ struct dm_target_spec *tgt;
+
+ tgt = dm_dev_ioctl(fd, DM_TABLE_STATUS, &dm);
+ if (!tgt) {
+ if (errno == ENXIO) {
+ return 0;
+ }
+ perror("ioctl");
+ exit(EXIT_FAILURE);
+ }
+ return !strncmp(tgt->target_type, "multipath", DM_MAX_TYPE_NAME);
+}
+
+static int mpath_reconstruct_sense(int fd, int r, uint8_t *sense)
+{
+ switch (r) {
+ case MPATH_PR_SUCCESS:
+ return GOOD;
+ case MPATH_PR_SENSE_NOT_READY:
+ case MPATH_PR_SENSE_MEDIUM_ERROR:
+ case MPATH_PR_SENSE_HARDWARE_ERROR:
+ case MPATH_PR_SENSE_ABORTED_COMMAND:
+ {
+ /* libmpathpersist ate the exact sense. Try to find it by
+ * issuing TEST UNIT READY.
+ */
+ uint8_t cdb[6] = { TEST_UNIT_READY };
+ return do_sgio(fd, cdb, sense, NULL, 0, SG_DXFER_NONE);
+ }
+
+ case MPATH_PR_SENSE_UNIT_ATTENTION:
+ /* Congratulations libmpathpersist, you ruined the Unit Attention...
+ * Return a heavyweight one.
+ */
+ scsi_build_sense(sense, SENSE_CODE(SCSI_BUS_RESET));
+ return CHECK_CONDITION;
+ case MPATH_PR_SENSE_INVALID_OP:
+ /* Only one valid sense. */
+ scsi_build_sense(sense, SENSE_CODE(INVALID_OPCODE));
+ return CHECK_CONDITION;
+ case MPATH_PR_ILLEGAL_REQ:
+ /* Guess. */
+ scsi_build_sense(sense, SENSE_CODE(INVALID_PARAM));
+ return CHECK_CONDITION;
+ case MPATH_PR_NO_SENSE:
+ scsi_build_sense(sense, SENSE_CODE(NO_SENSE));
+ return CHECK_CONDITION;
+
+ case MPATH_PR_RESERV_CONFLICT:
+ return RESERVATION_CONFLICT;
+
+ case MPATH_PR_OTHER:
+ default:
+ scsi_build_sense(sense, SENSE_CODE(LUN_COMM_FAILURE));
+ return CHECK_CONDITION;
+ }
+}
+
+static int multipath_pr_in(int fd, const uint8_t *cdb, uint8_t *sense,
+ uint8_t *data, int sz)
+{
+ int rq_servact = cdb[1];
+ struct prin_resp resp;
+ size_t written;
+ int r;
+
+ switch (rq_servact) {
+ case MPATH_PRIN_RKEY_SA:
+ case MPATH_PRIN_RRES_SA:
+ case MPATH_PRIN_RCAP_SA:
+ break;
+ case MPATH_PRIN_RFSTAT_SA:
+ /* Nobody implements it anyway, so bail out. */
+ default:
+ /* Cannot parse any other output. */
+ scsi_build_sense(sense, SENSE_CODE(INVALID_FIELD));
+ return CHECK_CONDITION;
+ }
+
+ r = mpath_persistent_reserve_in(fd, rq_servact, &resp, noisy, verbose);
+ if (r == MPATH_PR_SUCCESS) {
+ switch (rq_servact) {
+ case MPATH_PRIN_RKEY_SA:
+ case MPATH_PRIN_RRES_SA: {
+ struct prin_readdescr *out = &resp.prin_descriptor.prin_readkeys;
+ stl_be_p(&data[0], out->prgeneration);
+ stl_be_p(&data[4], out->additional_length);
+ memcpy(&data[8], out->key_list, MIN(out->additional_length, sz -
8));
+ written = MIN(out->additional_length + 8, sz);
+ break;
+ }
+ case MPATH_PRIN_RCAP_SA: {
+ struct prin_capdescr *out = &resp.prin_descriptor.prin_readcap;
+ stw_be_p(&data[0], out->length);
+ data[2] = out->flags[0];
+ data[3] = out->flags[1];
+ stw_be_p(&data[4], out->pr_type_mask);
+ written = MIN(6, sz);
+ break;
+ }
+ default:
+ scsi_build_sense(sense, SENSE_CODE(INVALID_OPCODE));
+ return CHECK_CONDITION;
+ }
+ assert(written < sz);
+ memset(data + written, 0, sz - written);
+ }
+
+ return mpath_reconstruct_sense(fd, r, sense);
+}
+
+static int multipath_pr_out(int fd, const uint8_t *cdb, uint8_t *sense,
+ const uint8_t *param, int sz)
+{
+ int rq_servact = cdb[1];
+ int rq_scope = cdb[2] >> 4;
+ int rq_type = cdb[2] & 0xf;
+ struct prout_param_descriptor paramp;
+ char transportids[PR_HELPER_DATA_SIZE];
+ int r;
+ int i, j;
+
+ switch (rq_servact) {
+ case MPATH_PROUT_REG_SA:
+ case MPATH_PROUT_RES_SA:
+ case MPATH_PROUT_REL_SA:
+ case MPATH_PROUT_CLEAR_SA:
+ case MPATH_PROUT_PREE_SA:
+ case MPATH_PROUT_PREE_AB_SA:
+ case MPATH_PROUT_REG_IGN_SA:
+ case MPATH_PROUT_REG_MOV_SA:
+ break;
+ default:
+ /* Cannot parse any other input. */
+ scsi_build_sense(sense, SENSE_CODE(INVALID_FIELD));
+ return CHECK_CONDITION;
+ }
+
+ /* Convert input data, especially transport IDs, to the structs
+ * used by libmpathpersist (which, of course, will immediately
+ * do the opposite).
+ */
+ memset(¶mp, 0, sizeof(paramp));
+ memcpy(¶mp.key, ¶m[0], 8);
+ memcpy(¶mp.sa_key, ¶m[8], 8);
+ paramp.sa_flags = param[10];
+ for (i = PR_OUT_FIXED_PARAM_SIZE, j = 0; i < sz; ) {
+ struct transportid *id = (struct transportid *) &transportids[j];
+ int len;
+
+ id->format_code = param[i] & 0xc0;
+ id->protocol_id = param[i] & 0x0f;
+ switch (param[i] & 0xcf) {
+ case 0:
+ /* FC transport. */
+ memcpy(id->n_port_name, ¶m[i + 8], 8);
+ j += offsetof(struct transportid, n_port_name[8]);
+ i += 24;
+ break;
+ case 3:
+ case 0x43:
+ /* iSCSI transport. */
+ len = lduw_be_p(¶m[i + 2]);
+ if (len > 252 || (len & 3)) {
+ /* For format code 00, the standard says the maximum is 223,
+ * plus the NUL terminator. For format code 01 there is no
+ * maximum length, but libmpathpersist ignores the first byte
+ * of id->iscsi_name so our maximum is 252.
+ */
+ goto illegal_req;
+ }
+ if (memchr(¶m[i + 4], 0, len) == NULL) {
+ goto illegal_req;
+ }
+ memcpy(id->iscsi_name, ¶m[i + 2], len + 2);
+ j += offsetof(struct transportid, iscsi_name[len + 2]);
+ i += len + 4;
+ break;
+ case 6:
+ /* SAS transport. */
+ memcpy(id->sas_address, ¶m[i + 4], 8);
+ j += offsetof(struct transportid, sas_address[8]);
+ i += 24;
+ break;
+ default:
+ illegal_req:
+ scsi_build_sense(sense, SENSE_CODE(INVALID_PARAM));
+ return CHECK_CONDITION;
+ }
+
+ paramp.trnptid_list[paramp.num_transportid++] = id;
+ }
+
+ r = mpath_persistent_reserve_out(fd, rq_servact, rq_scope, rq_type,
+ ¶mp, noisy, verbose);
+ return mpath_reconstruct_sense(fd, r, sense);
+}
+#endif
+
static int do_pr_in(int fd, const uint8_t *cdb, uint8_t *sense,
uint8_t *data, int sz)
{
+#ifdef CONFIG_MPATH
+ if (is_mpath(fd)) {
+ return multipath_pr_in(fd, cdb, sense, data, sz);
+ }
+#endif
+
return do_sgio(fd, cdb, sense, data, sz,
SG_DXFER_FROM_DEV);
}
@@ -172,6 +462,12 @@ static int do_pr_in(int fd, const uint8_t *cdb, uint8_t
*sense,
static int do_pr_out(int fd, const uint8_t *cdb, uint8_t *sense,
const uint8_t *param, int sz)
{
+#ifdef CONFIG_MPATH
+ if (is_mpath(fd)) {
+ return multipath_pr_out(fd, cdb, sense, param, sz);
+ }
+#endif
+
return do_sgio(fd, cdb, sense, (uint8_t *)param, sz,
SG_DXFER_TO_DEV);
}
@@ -444,6 +740,11 @@ static int drop_privileges(void)
CAP_SYS_RAWIO) < 0) {
return -1;
}
+ /* For /dev/mapper/control ioctls */
+ if (capng_update(CAPNG_ADD, CAPNG_EFFECTIVE | CAPNG_PERMITTED,
+ CAP_SYS_ADMIN) < 0) {
+ return -1;
+ }
/* Change user/group id, retaining the capabilities. Because file
descriptors
* are passed via SCM_RIGHTS, we don't need supplementary groups (and in
@@ -461,7 +762,7 @@ static int drop_privileges(void)
int main(int argc, char **argv)
{
- const char *sopt = "hVk:fdT:u:g:q";
+ const char *sopt = "hVk:fdT:u:g:vq";
struct option lopt[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
@@ -471,10 +772,12 @@ int main(int argc, char **argv)
{ "trace", required_argument, NULL, 'T' },
{ "user", required_argument, NULL, 'u' },
{ "group", required_argument, NULL, 'g' },
+ { "verbose", no_argument, NULL, 'v' },
{ "quiet", no_argument, NULL, 'q' },
{ NULL, 0, NULL, 0 }
};
int opt_ind = 0;
+ int loglevel = 1;
int quiet = 0;
char ch;
Error *local_err = NULL;
@@ -551,6 +854,9 @@ int main(int argc, char **argv)
case 'q':
quiet = 1;
break;
+ case 'v':
+ ++loglevel;
+ break;
case 'T':
g_free(trace_file);
trace_file = trace_opt_parse(optarg);
@@ -570,7 +876,8 @@ int main(int argc, char **argv)
}
/* set verbosity */
- verbose = !quiet;
+ noisy = !quiet && (loglevel >= 3);
+ verbose = quiet ? 0 : MIN(loglevel, 3);
if (!trace_init_backends()) {
exit(1);
diff --git a/scsi/utils.c b/scsi/utils.c
index eedd5f45b4..b5c0e05408 100644
--- a/scsi/utils.c
+++ b/scsi/utils.c
@@ -116,6 +116,11 @@ const struct SCSISense
sense_code_NOT_READY_REMOVAL_PREVENTED = {
.key = NOT_READY, .asc = 0x53, .ascq = 0x02
};
+/* Medium Error, Unrecoverable Read Error */
+const struct SCSISense sense_code_READ_ERROR = {
+ .key = MEDIUM_ERROR, .asc = 0x11, .ascq = 0x00
+};
+
/* Hardware error, internal target failure */
const struct SCSISense sense_code_TARGET_FAILURE = {
.key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00
@@ -191,6 +196,11 @@ const struct SCSISense sense_code_OVERLAPPED_COMMANDS = {
.key = ABORTED_COMMAND, .asc = 0x4e, .ascq = 0x00
};
+/* Command aborted, LUN Communication Failure */
+const struct SCSISense sense_code_LUN_COMM_FAILURE = {
+ .key = ABORTED_COMMAND, .asc = 0x08, .ascq = 0x00
+};
+
/* Unit attention, Capacity data has changed */
const struct SCSISense sense_code_CAPACITY_CHANGED = {
.key = UNIT_ATTENTION, .asc = 0x2a, .ascq = 0x09
@@ -201,6 +211,11 @@ const struct SCSISense sense_code_RESET = {
.key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00
};
+/* Unit attention, SCSI bus reset */
+const struct SCSISense sense_code_SCSI_BUS_RESET = {
+ .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x02
+};
+
/* Unit attention, No medium */
const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = {
.key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00
--
2.13.5
