From: Sebastian Harl Date: Fri, 25 Jan 2013 13:32:32 +0000 (+0100) Subject: netapp plugin: Added support for collecting dedup/compressed saved info. X-Git-Tag: collectd-5.3.0~43^2~2 X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=096b09915242de5471e5d835400ae73f7e5e1a2c;p=collectd.git netapp plugin: Added support for collecting dedup/compressed saved info. This information is available from the SIS subsystem starting with OnTap 8.1. --- diff --git a/src/netapp.c b/src/netapp.c index e65ec0e6..c87960d9 100644 --- a/src/netapp.c +++ b/src/netapp.c @@ -181,16 +181,18 @@ typedef struct { * * \brief Configuration struct for volume usage data (free / used). */ -#define CFG_VOLUME_USAGE_DF 0x0002 -#define CFG_VOLUME_USAGE_SNAP 0x0004 -#define CFG_VOLUME_USAGE_ALL 0x0006 -#define HAVE_VOLUME_USAGE_NORM_FREE 0x0010 -#define HAVE_VOLUME_USAGE_NORM_USED 0x0020 -#define HAVE_VOLUME_USAGE_SNAP_RSVD 0x0040 -#define HAVE_VOLUME_USAGE_SNAP_USED 0x0080 -#define HAVE_VOLUME_USAGE_SIS_SAVED 0x0100 -#define HAVE_VOLUME_USAGE_ALL 0x01f0 -#define IS_VOLUME_USAGE_OFFLINE 0x0200 +#define CFG_VOLUME_USAGE_DF 0x0002 +#define CFG_VOLUME_USAGE_SNAP 0x0004 +#define CFG_VOLUME_USAGE_ALL 0x0006 +#define HAVE_VOLUME_USAGE_NORM_FREE 0x0010 +#define HAVE_VOLUME_USAGE_NORM_USED 0x0020 +#define HAVE_VOLUME_USAGE_SNAP_RSVD 0x0040 +#define HAVE_VOLUME_USAGE_SNAP_USED 0x0080 +#define HAVE_VOLUME_USAGE_SIS_SAVED 0x0100 +#define HAVE_VOLUME_USAGE_COMPRESS_SAVED 0x0200 +#define HAVE_VOLUME_USAGE_DEDUP_SAVED 0x0400 +#define HAVE_VOLUME_USAGE_ALL 0x07f0 +#define IS_VOLUME_USAGE_OFFLINE 0x0800 struct data_volume_usage_s; typedef struct data_volume_usage_s data_volume_usage_t; struct data_volume_usage_s { @@ -204,6 +206,8 @@ struct data_volume_usage_s { uint64_t snap_reserved; uint64_t snap_used; uint64_t sis_saved; + uint64_t compress_saved; + uint64_t dedup_saved; data_volume_usage_t *next; }; @@ -1402,6 +1406,8 @@ static int cna_submit_volume_usage_data (const char *hostname, /* {{{ */ uint64_t norm_used = v->norm_used; uint64_t norm_free = v->norm_free; uint64_t sis_saved = v->sis_saved; + uint64_t compress_saved = v->compress_saved; + uint64_t dedup_saved = v->dedup_saved; uint64_t snap_reserve_used = 0; uint64_t snap_reserve_free = v->snap_reserved; uint64_t snap_norm_used = v->snap_used; @@ -1446,6 +1452,16 @@ static int cna_submit_volume_usage_data (const char *hostname, /* {{{ */ "df_complex", "sis_saved", (double) sis_saved, /* timestamp = */ 0, interval); + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_COMPRESS_SAVED)) + submit_double (hostname, /* plugin instance = */ plugin_instance, + "df_complex", "compression_saved", + (double) compress_saved, /* timestamp = */ 0, interval); + + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_DEDUP_SAVED)) + submit_double (hostname, /* plugin instance = */ plugin_instance, + "df_complex", "dedup_saved", + (double) dedup_saved, /* timestamp = */ 0, interval); + if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_NORM_USED)) submit_double (hostname, /* plugin instance = */ plugin_instance, "df_complex", "used", @@ -1554,6 +1570,101 @@ static void cna_handle_volume_snap_usage(const host_config_t *host, /* {{{ */ v->flags |= HAVE_VOLUME_USAGE_SNAP_USED; } /* }}} void cna_handle_volume_snap_usage */ +static void cna_handle_volume_sis_data (const host_config_t *host, /* {{{ */ + data_volume_usage_t *v, na_elem_t *sis) +{ + const char *sis_state; + uint64_t sis_saved_reported; + + if (na_elem_child(sis, "sis-info")) + sis = na_elem_child(sis, "sis-info"); + + sis_state = na_child_get_string(sis, "state"); + if (sis_state == NULL) + return; + + /* If SIS is not enabled, there's nothing left to do for this volume. */ + if (strcmp ("enabled", sis_state) != 0) + return; + + sis_saved_reported = na_child_get_uint64(sis, "size-saved", UINT64_MAX); + if (sis_saved_reported == UINT64_MAX) + return; + + /* size-saved is actually a 32 bit number, so ... time for some guesswork. */ + if ((sis_saved_reported >> 32) != 0) { + /* In case they ever fix this bug. */ + v->sis_saved = sis_saved_reported; + v->flags |= HAVE_VOLUME_USAGE_SIS_SAVED; + } else { /* really hacky work-around code. {{{ */ + uint64_t sis_saved_percent; + uint64_t sis_saved_guess; + uint64_t overflow_guess; + uint64_t guess1, guess2, guess3; + + /* Check if we have v->norm_used. Without it, we cannot calculate + * sis_saved_guess. */ + if ((v->flags & HAVE_VOLUME_USAGE_NORM_USED) == 0) + return; + + sis_saved_percent = na_child_get_uint64(sis, "percentage-saved", UINT64_MAX); + if (sis_saved_percent > 100) + return; + + /* The "size-saved" value is a 32bit unsigned integer. This is a bug and + * will hopefully be fixed in later versions. To work around the bug, try + * to figure out how often the 32bit integer wrapped around by using the + * "percentage-saved" value. Because the percentage is in the range + * [0-100], this should work as long as the saved space does not exceed + * 400 GBytes. */ + /* percentage-saved = size-saved / (size-saved + size-used) */ + if (sis_saved_percent < 100) + sis_saved_guess = v->norm_used * sis_saved_percent / (100 - sis_saved_percent); + else + sis_saved_guess = v->norm_used; + + overflow_guess = sis_saved_guess >> 32; + guess1 = overflow_guess ? ((overflow_guess - 1) << 32) + sis_saved_reported : sis_saved_reported; + guess2 = (overflow_guess << 32) + sis_saved_reported; + guess3 = ((overflow_guess + 1) << 32) + sis_saved_reported; + + if (sis_saved_guess < guess2) { + if ((sis_saved_guess - guess1) < (guess2 - sis_saved_guess)) + v->sis_saved = guess1; + else + v->sis_saved = guess2; + } else { + if ((sis_saved_guess - guess2) < (guess3 - sis_saved_guess)) + v->sis_saved = guess2; + else + v->sis_saved = guess3; + } + v->flags |= HAVE_VOLUME_USAGE_SIS_SAVED; + } /* }}} end of 32-bit workaround */ +} /* }}} void cna_handle_volume_sis_data */ + +/* ONTAP >= 8.1 uses SIS for managing dedup and compression */ +static void cna_handle_volume_sis_saved (const host_config_t *host, /* {{{ */ + data_volume_usage_t *v, na_elem_t *sis) +{ + uint64_t saved; + + if (na_elem_child(sis, "sis-info")) + sis = na_elem_child(sis, "sis-info"); + + saved = na_child_get_uint64(sis, "compress-saved", UINT64_MAX); + if (saved != UINT64_MAX) { + v->compress_saved = saved; + v->flags |= HAVE_VOLUME_USAGE_COMPRESS_SAVED; + } + + saved = na_child_get_uint64(sis, "dedup-saved", UINT64_MAX); + if (saved != UINT64_MAX) { + v->dedup_saved = saved; + v->flags |= HAVE_VOLUME_USAGE_DEDUP_SAVED; + } +} /* }}} void cna_handle_volume_sis_saved */ + static int cna_handle_volume_usage_data (const host_config_t *host, /* {{{ */ cfg_volume_usage_t *cfg_volume, na_elem_t *data) { @@ -1581,8 +1692,6 @@ static int cna_handle_volume_usage_data (const host_config_t *host, /* {{{ */ uint64_t value; na_elem_t *sis; - const char *sis_state; - uint64_t sis_saved_reported; volume_name = na_child_get_string (elem_volume, "name"); if (volume_name == NULL) @@ -1624,74 +1733,10 @@ static int cna_handle_volume_usage_data (const host_config_t *host, /* {{{ */ } sis = na_elem_child(elem_volume, "sis"); - if (sis == NULL) - continue; - - if (na_elem_child(sis, "sis-info")) - sis = na_elem_child(sis, "sis-info"); - - sis_state = na_child_get_string(sis, "state"); - if (sis_state == NULL) - continue; - - /* 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) - continue; - - /* size-saved is actually a 32 bit number, so ... time for some guesswork. */ - if ((sis_saved_reported >> 32) != 0) { - /* In case they ever fix this bug. */ - v->sis_saved = sis_saved_reported; - v->flags |= HAVE_VOLUME_USAGE_SIS_SAVED; - } else { /* really hacky work-around code. {{{ */ - uint64_t sis_saved_percent; - uint64_t sis_saved_guess; - uint64_t overflow_guess; - uint64_t guess1, guess2, guess3; - - /* Check if we have v->norm_used. Without it, we cannot calculate - * sis_saved_guess. */ - if ((v->flags & HAVE_VOLUME_USAGE_NORM_USED) == 0) - continue; - - sis_saved_percent = na_child_get_uint64(sis, "percentage-saved", UINT64_MAX); - if (sis_saved_percent > 100) - continue; - - /* The "size-saved" value is a 32bit unsigned integer. This is a bug and - * will hopefully be fixed in later versions. To work around the bug, try - * to figure out how often the 32bit integer wrapped around by using the - * "percentage-saved" value. Because the percentage is in the range - * [0-100], this should work as long as the saved space does not exceed - * 400 GBytes. */ - /* percentage-saved = size-saved / (size-saved + size-used) */ - if (sis_saved_percent < 100) - sis_saved_guess = v->norm_used * sis_saved_percent / (100 - sis_saved_percent); - else - sis_saved_guess = v->norm_used; - - overflow_guess = sis_saved_guess >> 32; - guess1 = overflow_guess ? ((overflow_guess - 1) << 32) + sis_saved_reported : sis_saved_reported; - guess2 = (overflow_guess << 32) + sis_saved_reported; - guess3 = ((overflow_guess + 1) << 32) + sis_saved_reported; - - if (sis_saved_guess < guess2) { - if ((sis_saved_guess - guess1) < (guess2 - sis_saved_guess)) - v->sis_saved = guess1; - else - v->sis_saved = guess2; - } else { - if ((sis_saved_guess - guess2) < (guess3 - sis_saved_guess)) - v->sis_saved = guess2; - else - v->sis_saved = guess3; - } - v->flags |= HAVE_VOLUME_USAGE_SIS_SAVED; - } /* }}} end of 32-bit workaround */ + if (sis != NULL) { + cna_handle_volume_sis_data (host, v, sis); + cna_handle_volume_sis_saved (host, v, sis); + } } /* for (elem_volume) */ return (cna_submit_volume_usage_data (host->name, cfg_volume, host->interval));