From 5b98ed47dc265f25b072335aacc330c260798410 Mon Sep 17 00:00:00 2001 From: Sven Trenkel Date: Wed, 30 Sep 2009 12:17:39 +0200 Subject: [PATCH] Added snapshot usage stats. --- src/netapp.c | 135 ++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 108 insertions(+), 27 deletions(-) diff --git a/src/netapp.c b/src/netapp.c index 9bfaaa66..1ef17a58 100644 --- a/src/netapp.c +++ b/src/netapp.c @@ -29,6 +29,7 @@ #include "utils_ignorelist.h" #include +#include #define HAS_ALL_FLAGS(has,needs) (((has) & (needs)) == (needs)) @@ -195,6 +196,8 @@ struct data_volume_usage_s { char *name; uint32_t flags; + na_elem_t *snap_query; + uint64_t norm_free; uint64_t norm_used; uint64_t snap_reserved; @@ -343,6 +346,8 @@ static void free_cfg_volume_usage (cfg_volume_usage_t *cvu) /* {{{ */ { data_volume_usage_t *next = data->next; sfree (data->name); + if (data->snap_query != NULL) + na_elem_free(data->snap_query); sfree (data); data = next; } @@ -384,11 +389,11 @@ static void free_host_config (host_config_t *hc) /* {{{ */ free_cfg_volume_usage (hc->cfg_volume_usage); free_cfg_system (hc->cfg_system); - sfree (hc); - if (hc->srv != NULL) na_server_close (hc->srv); + sfree (hc); + free_host_config (next); } /* }}} void free_host_config */ @@ -473,8 +478,14 @@ static data_volume_usage_t *get_volume_usage (cfg_volume_usage_t *cvu, /* {{{ */ if (ignore_capacity == 0) new->flags |= CFG_VOLUME_USAGE_DF; - if (ignore_snapshot == 0) + if (ignore_snapshot == 0) { new->flags |= CFG_VOLUME_USAGE_SNAP; + new->snap_query = na_elem_new ("snapshot-list-info"); + na_child_add_string(new->snap_query, "target-type", "volume"); + na_child_add_string(new->snap_query, "target-name", name); + } else { + new->snap_query = NULL; + } /* Add to end of list. */ if (last == NULL) @@ -1337,30 +1348,57 @@ static int cna_submit_volume_usage_data (const char *hostname, /* {{{ */ for (v = cfg_volume->volumes; v != NULL; v = v->next) { + uint64_t norm_used = v->norm_used; + uint64_t norm_free = v->norm_free; + uint64_t sis_saved = v->sis_saved; + uint64_t snap_reserve_used = 0; + uint64_t snap_reserve_free = v->snap_reserved; + uint64_t snap_norm_used = v->snap_used; + + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_USED | HAVE_VOLUME_USAGE_SNAP_RSVD)) { + if (v->snap_reserved > v->snap_used) { + snap_reserve_free = v->snap_reserved - v->snap_used; + snap_reserve_used = v->snap_used; + snap_norm_used = 0; + } else { + snap_reserve_free = 0; + snap_reserve_used = v->snap_reserved; + snap_norm_used = v->snap_used - v->snap_reserved; + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_NORM_USED) + && (norm_used >= snap_norm_used)) + norm_used -= snap_norm_used; + } + } + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_NORM_FREE)) submit_double (hostname, /* plugin instance = */ v->name, "df_complex", "free", - (double) v->norm_free, /* timestamp = */ 0); + (double) norm_free, /* timestamp = */ 0); + + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SIS_SAVED)) + submit_double (hostname, /* plugin instance = */ v->name, + "df_complex", "sis_saved", + (double) sis_saved, /* timestamp = */ 0); if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_NORM_USED)) submit_double (hostname, /* plugin instance = */ v->name, "df_complex", "used", - (double) v->norm_used, /* timestamp = */ 0); + (double) norm_used, /* timestamp = */ 0); if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_RSVD)) submit_double (hostname, /* plugin instance = */ v->name, "df_complex", "snap_reserved", - (double) v->snap_reserved, /* timestamp = */ 0); + (double) snap_reserve_free, /* timestamp = */ 0); - if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_USED)) + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_USED | HAVE_VOLUME_USAGE_SNAP_RSVD)) submit_double (hostname, /* plugin instance = */ v->name, - "df_complex", "snap_used", - (double) v->snap_used, /* timestamp = */ 0); + "df_complex", "snap_reserve_used", + (double) snap_reserve_used, /* timestamp = */ 0); - if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SIS_SAVED)) + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_USED)) submit_double (hostname, /* plugin instance = */ v->name, - "df_complex", "sis_saved", - (double) v->sis_saved, /* timestamp = */ 0); + "df_complex", "snap_normal_used", + (double) snap_norm_used, /* timestamp = */ 0); /* Clear all the HAVE_* flags */ v->flags &= ~HAVE_VOLUME_USAGE_ALL; @@ -1369,7 +1407,49 @@ static int cna_submit_volume_usage_data (const char *hostname, /* {{{ */ return (0); } /* }}} int cna_submit_volume_usage_data */ -static int cna_handle_volume_usage_data (const char *hostname, /* {{{ */ +static void cna_handle_volume_snap_usage(const host_config_t *host, data_volume_usage_t *v) +{ + uint64_t snap_used = 0, value; + na_elem_t *data, *elem_snap, *elem_snapshots; + na_elem_iter_t iter_snap; + + data = na_server_invoke_elem(host->srv, v->snap_query); + if (na_results_status(data) != NA_OK) + { + if (na_results_errno(data) != EVOLUMEOFFLINE) + ERROR ("netapp plugin: cna_handle_volume_snap_usage: na_server_invoke_elem for " + "volume \"%s\" failed with error %d: %s", v->name, + na_results_errno(data), na_results_reason(data)); + na_elem_free(data); + return; + } + + elem_snapshots = na_elem_child (data, "snapshots"); + if (elem_snapshots == NULL) + { + ERROR ("netapp plugin: cna_handle_volume_snap_usage: " + "na_elem_child (\"snapshots\") failed."); + na_elem_free(data); + return; + } + + iter_snap = na_child_iterator (elem_snapshots); + for (elem_snap = na_iterator_next (&iter_snap); + elem_snap != NULL; + elem_snap = na_iterator_next (&iter_snap)) + { + value = na_child_get_uint64(elem_snap, "cumulative-total", 0); + if (value > snap_used) + snap_used = value; + } + na_elem_free (data); + /* snap_used is the total size of the oldest snapshot plus all + * newer ones in blocks (1KB). */ + v->snap_used = snap_used * 1024; + v->flags |= HAVE_VOLUME_USAGE_SNAP_USED; +} + +static int cna_handle_volume_usage_data (const host_config_t *host, /* {{{ */ cfg_volume_usage_t *cfg_volume, na_elem_t *data) { na_elem_t *elem_volume; @@ -1389,7 +1469,7 @@ static int cna_handle_volume_usage_data (const char *hostname, /* {{{ */ elem_volume != NULL; elem_volume = na_iterator_next (&iter_volume)) { - const char *volume_name; + const char *volume_name, *state; data_volume_usage_t *v; uint64_t value; @@ -1402,11 +1482,18 @@ static int cna_handle_volume_usage_data (const char *hostname, /* {{{ */ if (volume_name == NULL) continue; + state = na_child_get_string (elem_volume, "state"); + if ((state == NULL) || (strcmp(state, "online") != 0)) + continue; + /* get_volume_usage may return NULL if the volume is to be ignored. */ v = get_volume_usage (cfg_volume, volume_name); if (v == NULL) continue; + if ((v->flags & CFG_VOLUME_USAGE_SNAP) != 0) + cna_handle_volume_snap_usage(host, v); + if ((v->flags & CFG_VOLUME_USAGE_DF) == 0) continue; @@ -1426,7 +1513,7 @@ static int cna_handle_volume_usage_data (const char *hostname, /* {{{ */ value = na_child_get_uint64(elem_volume, "snapshot-blocks-reserved", UINT64_MAX); if (value != UINT64_MAX) { /* 1 block == 1024 bytes as per API docs */ - v->norm_used = 1024 * value; + v->snap_reserved = 1024 * value; v->flags |= HAVE_VOLUME_USAGE_SNAP_RSVD; } @@ -1438,13 +1525,9 @@ static int cna_handle_volume_usage_data (const char *hostname, /* {{{ */ if (sis_state == NULL) continue; - /* If SIS is not enabled, set the HAVE_VOLUME_USAGE_SIS_SAVED flag and set - * sis_saved to UINT64_MAX to signal this condition to the submit function. */ - if (strcmp ("enabled", sis_state) != 0) { - v->sis_saved = UINT64_MAX; - v->flags |= HAVE_VOLUME_USAGE_SIS_SAVED; + /* If SIS is not enabled, there's nothing left to do for this volume. */ + if (strcmp ("enabled", sis_state) != 0) continue; - } sis_saved_reported = na_child_get_uint64(sis, "size-saved", UINT64_MAX); if (sis_saved_reported == UINT64_MAX) @@ -1502,7 +1585,7 @@ static int cna_handle_volume_usage_data (const char *hostname, /* {{{ */ } /* }}} end of 32-bit workaround */ } /* for (elem_volume) */ - return (cna_submit_volume_usage_data (hostname, cfg_volume)); + return (cna_submit_volume_usage_data (host->name, cfg_volume)); } /* }}} int cna_handle_volume_usage_data */ static int cna_setup_volume_usage (cfg_volume_usage_t *cvu) /* {{{ */ @@ -1520,8 +1603,6 @@ static int cna_setup_volume_usage (cfg_volume_usage_t *cvu) /* {{{ */ return (-1); } - /* TODO: cvu->snap_query = na_elem_new("snapshot-list-info"); */ - return (0); } /* }}} int cna_setup_volume_usage */ @@ -1557,7 +1638,7 @@ static int cna_query_volume_usage (host_config_t *host) /* {{{ */ return (-1); } - status = cna_handle_volume_usage_data (host->name, host->cfg_volume_usage, data); + status = cna_handle_volume_usage_data (host, host->cfg_volume_usage, data); if (status == 0) host->cfg_volume_usage->interval.last_read = now; @@ -1760,14 +1841,14 @@ static int cna_config_get_interval (const oconfig_item_t *ci, /* {{{ */ if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER)) { - WARNING ("netapp plugin: The `Multiplier' option needs exactly one numeric argument."); + WARNING ("netapp plugin: The `Interval' option needs exactly one numeric argument."); return (-1); } tmp = (time_t) (ci->values[0].value.number + .5); if (tmp < 1) { - WARNING ("netapp plugin: The `Multiplier' option needs a positive integer argument."); + WARNING ("netapp plugin: The `Interval' option needs a positive integer argument."); return (-1); } -- 2.30.2