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zpool iostat -k shows kind of vdevs: ssd, hdd, file or mixed.
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inkdot7 committed Jan 13, 2017
1 parent 8427cb0 commit 90cc8c3
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Showing 2 changed files with 59 additions and 8 deletions.
54 changes: 48 additions & 6 deletions cmd/zpool/zpool_main.c
Original file line number Diff line number Diff line change
Expand Up @@ -152,15 +152,17 @@ enum iostat_type {
IOS_DEFAULT = 0,
IOS_LATENCY = 1,
IOS_QUEUES = 2,
IOS_L_HISTO = 3,
IOS_RQ_HISTO = 4,
IOS_KIND = 3,
IOS_L_HISTO = 4,
IOS_RQ_HISTO = 5,
IOS_COUNT, /* always last element */
};

/* iostat_type entries as bitmasks */
#define IOS_DEFAULT_M (1ULL << IOS_DEFAULT)
#define IOS_LATENCY_M (1ULL << IOS_LATENCY)
#define IOS_QUEUES_M (1ULL << IOS_QUEUES)
#define IOS_KIND_M (1ULL << IOS_KIND)
#define IOS_L_HISTO_M (1ULL << IOS_L_HISTO)
#define IOS_RQ_HISTO_M (1ULL << IOS_RQ_HISTO)

Expand Down Expand Up @@ -197,6 +199,9 @@ static const char *vsx_type_to_nvlist[IOS_COUNT][11] = {
ZPOOL_CONFIG_VDEV_ASYNC_W_ACTIVE_QUEUE,
ZPOOL_CONFIG_VDEV_SCRUB_ACTIVE_QUEUE,
NULL},
[IOS_KIND] = {
ZPOOL_CONFIG_VDEV_KIND,
NULL},
[IOS_RQ_HISTO] = {
ZPOOL_CONFIG_VDEV_SYNC_IND_R_HISTO,
ZPOOL_CONFIG_VDEV_SYNC_AGG_R_HISTO,
Expand Down Expand Up @@ -313,7 +318,7 @@ get_usage(zpool_help_t idx)
"[-R root] [-F [-n]]\n"
"\t <pool | id> [newpool]\n"));
case HELP_IOSTAT:
return (gettext("\tiostat [-c CMD] [-T d | u] [-ghHLpPvy] "
return (gettext("\tiostat [-c CMD] [-T d | u] [-ghHkLpPvy] "
"[[-lq]|[-r|-w]]\n"
"\t [[pool ...]|[pool vdev ...]|[vdev ...]] "
"[interval [count]]\n"));
Expand Down Expand Up @@ -1456,6 +1461,30 @@ max_width(zpool_handle_t *zhp, nvlist_t *nv, int depth, int max,
return (max);
}

static const char *
kind_mark(nvlist_t *nv)
{
nvlist_t *nvx;
uint64_t kind = VDEV_KIND_UNKNOWN;

if (nvlist_lookup_nvlist(nv, ZPOOL_CONFIG_VDEV_STATS_EX, &nvx) == 0)
nvlist_lookup_uint64(nvx, ZPOOL_CONFIG_VDEV_KIND,
&kind);

switch (kind) {
case VDEV_KIND_SSD:
return ("ssd");
case VDEV_KIND_FILE:
return ("file");
case VDEV_KIND_MIXED:
return ("mix");
case VDEV_KIND_HDD:
return ("hdd");
default:
return ("-");
}
}

typedef struct spare_cbdata {
uint64_t cb_guid;
zpool_handle_t *cb_zhp;
Expand Down Expand Up @@ -2629,6 +2658,7 @@ static const name_and_columns_t iostat_top_labels[][IOSTAT_MAX_LABELS] =
[IOS_QUEUES] = {{"syncq_read", 2}, {"syncq_write", 2},
{"asyncq_read", 2}, {"asyncq_write", 2}, {"scrubq_read", 2},
{NULL}},
[IOS_KIND] = {{"", 1}, {NULL}},
[IOS_L_HISTO] = {{"total_wait", 2}, {"disk_wait", 2},
{"sync_queue", 2}, {"async_queue", 2}, {NULL}},
[IOS_RQ_HISTO] = {{"sync_read", 2}, {"sync_write", 2},
Expand All @@ -2645,6 +2675,7 @@ static const name_and_columns_t iostat_bottom_labels[][IOSTAT_MAX_LABELS] =
{"write"}, {"read"}, {"write"}, {"wait"}, {NULL}},
[IOS_QUEUES] = {{"pend"}, {"activ"}, {"pend"}, {"activ"}, {"pend"},
{"activ"}, {"pend"}, {"activ"}, {"pend"}, {"activ"}, {NULL}},
[IOS_KIND] = {{"kind"}, {NULL}},
[IOS_L_HISTO] = {{"read"}, {"write"}, {"read"}, {"write"}, {"read"},
{"write"}, {"read"}, {"write"}, {"scrub"}, {NULL}},
[IOS_RQ_HISTO] = {{"ind"}, {"agg"}, {"ind"}, {"agg"}, {"ind"}, {"agg"},
Expand Down Expand Up @@ -2707,9 +2738,10 @@ default_column_width(iostat_cbdata_t *cb, enum iostat_type type)
[IOS_DEFAULT] = 15, /* 1PB capacity */
[IOS_LATENCY] = 10, /* 1B ns = 10sec */
[IOS_QUEUES] = 6, /* 1M queue entries */
[IOS_KIND] = 4, /* kind/file/ssd/hdd/mix */
};

if (cb->cb_literal)
if (cb->cb_literal || type == IOS_KIND)
column_width = widths[type];

return (column_width);
Expand Down Expand Up @@ -3412,6 +3444,9 @@ print_vdev_stats(zpool_handle_t *zhp, const char *name, nvlist_t *oldnv,
print_iostat_latency(cb, oldnv, newnv, scale);
if (cb->cb_flags & IOS_QUEUES_M)
print_iostat_queues(cb, oldnv, newnv, scale);
if (cb->cb_flags & IOS_KIND_M)
printf("%s%4s", cb->cb_scripted ? "\t" : " ",
kind_mark(newnv));
if (cb->cb_flags & IOS_ANYHISTO_M) {
printf("\n");
print_iostat_histos(cb, oldnv, newnv, scale, name);
Expand Down Expand Up @@ -3960,7 +3995,7 @@ fsleep(float sec) {


/*
* zpool iostat [-c CMD] [-ghHLpPvy] [[-lq]|[-r|-w]] [-n name] [-T d|u]
* zpool iostat [-c CMD] [-ghHkLpPvy] [[-lq]|[-r|-w]] [-n name] [-T d|u]
* [[ pool ...]|[pool vdev ...]|[vdev ...]]
* [interval [count]]
*
Expand All @@ -3973,6 +4008,7 @@ fsleep(float sec) {
* -p Display values in parsable (exact) format.
* -H Scripted mode. Don't display headers, and separate properties
* by a single tab.
* -k Display kind of device, e.g. solid-state or mixed.
* -l Display average latency
* -q Display queue depths
* -w Display latency histograms
Expand Down Expand Up @@ -4001,6 +4037,7 @@ zpool_do_iostat(int argc, char **argv)
boolean_t guid = B_FALSE;
boolean_t follow_links = B_FALSE;
boolean_t full_name = B_FALSE;
boolean_t kind = B_FALSE;
iostat_cbdata_t cb = { 0 };
char *cmd = NULL;

Expand All @@ -4011,7 +4048,7 @@ zpool_do_iostat(int argc, char **argv)
uint64_t unsupported_flags;

/* check options */
while ((c = getopt(argc, argv, "c:gLPT:vyhplqrwH")) != -1) {
while ((c = getopt(argc, argv, "c:gLPT:vyhpklqrwH")) != -1) {
switch (c) {
case 'c':
cmd = optarg;
Expand All @@ -4034,6 +4071,9 @@ zpool_do_iostat(int argc, char **argv)
case 'p':
parsable = B_TRUE;
break;
case 'k':
kind = B_TRUE;
break;
case 'l':
latency = B_TRUE;
break;
Expand Down Expand Up @@ -4189,6 +4229,8 @@ zpool_do_iostat(int argc, char **argv)
cb.cb_flags |= IOS_LATENCY_M;
if (queues)
cb.cb_flags |= IOS_QUEUES_M;
if (kind)
cb.cb_flags |= IOS_KIND_M;
}

/*
Expand Down
13 changes: 11 additions & 2 deletions man/man8/zpool.8
Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,7 @@ zpool \- configures ZFS storage pools

.LP
.nf
\fB\fBzpool iostat\fR [\fB-c\fR \fBCMD\fR] [\fB-T\fR \fBd\fR | \fBu\fR] [\fB-ghHLpPvy\fR] [\fB-lq\fR]|[\fB-r\fR|-\fBw\fR]]
\fB\fBzpool iostat\fR [\fB-c\fR \fBCMD\fR] [\fB-T\fR \fBd\fR | \fBu\fR] [\fB-ghHkLpPvy\fR] [\fB-lq\fR]|[\fB-r\fR|-\fBw\fR]]
[[\fIpool\fR ...]|[\fIpool vdev\fR ...]|[\fIvdev\fR ...]] [\fIinterval\fR[\fIcount\fR]]\fR

.fi
Expand Down Expand Up @@ -1523,7 +1523,7 @@ Scan using the default search path, the libblkid cache will not be consulted. A
.sp
.ne 2
.na
\fB\fBzpool iostat\fR [\fB-c\fR \fBCMD\fR] [\fB-T\fR \fBd\fR | \fBu\fR] [\fB-ghHLpPvy\fR] [[\fB-lq\fR]|[\fB-r\fR|\fB-w\fR]] [[\fIpool\fR ...]|[\fIpool vdev\fR ...]|[\fIvdev\fR ...]] [\fIinterval\fR[\fIcount\fR]]\fR
\fB\fBzpool iostat\fR [\fB-c\fR \fBCMD\fR] [\fB-T\fR \fBd\fR | \fBu\fR] [\fB-ghHkLpPvy\fR] [[\fB-lq\fR]|[\fB-r\fR|\fB-w\fR]] [[\fIpool\fR ...]|[\fIpool vdev\fR ...]|[\fIvdev\fR ...]] [\fIinterval\fR[\fIcount\fR]]\fR

.ad
.sp .6
Expand Down Expand Up @@ -1585,6 +1585,15 @@ Display vdev GUIDs instead of the normal device names. These GUIDs can be used i
Scripted mode. Do not display headers, and separate fields by a single tab instead of arbitrary space.
.RE

.sp
.ne 2
.na
\fB\fB-k\fR\fR
.ad
.RS 12n
Display the kind of device a pool or vdev is based on: ssd, hdd or file. Mixed mirror vdevs that have both ssd (or file) and hdd members are marked "mix". A pool is considered mixed if all members are at least mixed, i.e. no pure hdd.
.RE

.sp
.ne 2
.na
Expand Down

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