diff options
| -rw-r--r-- | blockdev.c | 91 | ||||
| -rw-r--r-- | qapi/block-core.json | 7 | ||||
| -rw-r--r-- | tests/qemu-iotests/136 | 2 |
3 files changed, 61 insertions, 39 deletions
@@ -300,6 +300,45 @@ static int parse_block_error_action(const char *buf, bool is_read, Error **errp) } } +static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, + Error **errp) +{ + const QListEntry *entry; + for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { + switch (qobject_type(entry->value)) { + + case QTYPE_QSTRING: { + unsigned long long length; + const char *str = qstring_get_str(qobject_to_qstring(entry->value)); + if (parse_uint_full(str, &length, 10) == 0 && + length > 0 && length <= UINT_MAX) { + block_acct_add_interval(stats, (unsigned) length); + } else { + error_setg(errp, "Invalid interval length: %s", str); + return false; + } + break; + } + + case QTYPE_QINT: { + int64_t length = qint_get_int(qobject_to_qint(entry->value)); + if (length > 0 && length <= UINT_MAX) { + block_acct_add_interval(stats, (unsigned) length); + } else { + error_setg(errp, "Invalid interval length: %" PRId64, length); + return false; + } + break; + } + + default: + error_setg(errp, "The specification of stats-intervals is invalid"); + return false; + } + } + return true; +} + static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) { if (throttle_conflicting(cfg)) { @@ -442,13 +481,14 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, int bdrv_flags = 0; int on_read_error, on_write_error; bool account_invalid, account_failed; - const char *stats_intervals; BlockBackend *blk; BlockDriverState *bs; ThrottleConfig cfg; int snapshot = 0; Error *error = NULL; QemuOpts *opts; + QDict *interval_dict = NULL; + QList *interval_list = NULL; const char *id; bool has_driver_specific_opts; BlockdevDetectZeroesOptions detect_zeroes = @@ -482,7 +522,14 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); - stats_intervals = qemu_opt_get(opts, "stats-intervals"); + qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); + qdict_array_split(interval_dict, &interval_list); + + if (qdict_size(interval_dict) != 0) { + error_setg(errp, "Invalid option stats-intervals.%s", + qdict_first(interval_dict)->key); + goto early_err; + } extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, &detect_zeroes, &error); @@ -583,33 +630,10 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, block_acct_init(blk_get_stats(blk), account_invalid, account_failed); - if (stats_intervals) { - char **intervals = g_strsplit(stats_intervals, ":", 0); - unsigned i; - - if (*stats_intervals == '\0') { - error_setg(&error, "stats-intervals can't have an empty value"); - } - - for (i = 0; !error && intervals[i] != NULL; i++) { - unsigned long long val; - if (parse_uint_full(intervals[i], &val, 10) == 0 && - val > 0 && val <= UINT_MAX) { - block_acct_add_interval(blk_get_stats(blk), val); - } else { - error_setg(&error, "Invalid interval length: '%s'", - intervals[i]); - } - } - - g_strfreev(intervals); - - if (error) { - error_propagate(errp, error); - blk_unref(blk); - blk = NULL; - goto err_no_bs_opts; - } + if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { + blk_unref(blk); + blk = NULL; + goto err_no_bs_opts; } } @@ -617,10 +641,14 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, err_no_bs_opts: qemu_opts_del(opts); + QDECREF(interval_dict); + QDECREF(interval_list); return blk; early_err: qemu_opts_del(opts); + QDECREF(interval_dict); + QDECREF(interval_list); err_no_opts: QDECREF(bs_opts); return NULL; @@ -3948,11 +3976,6 @@ QemuOptsList qemu_common_drive_opts = { .type = QEMU_OPT_BOOL, .help = "whether to account for failed I/O operations " "in the statistics", - },{ - .name = "stats-intervals", - .type = QEMU_OPT_STRING, - .help = "colon-separated list of intervals " - "for collecting I/O statistics, in seconds", }, { /* end of list */ } }, diff --git a/qapi/block-core.json b/qapi/block-core.json index f97c250..a07b13f 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -1531,9 +1531,8 @@ # @stats-account-failed: #optional whether to include failed # operations when computing latency and last # access statistics (default: true) (Since 2.5) -# @stats-intervals: #optional colon-separated list of intervals for -# collecting I/O statistics, in seconds (default: none) -# (Since 2.5) +# @stats-intervals: #optional list of intervals for collecting I/O +# statistics, in seconds (default: none) (Since 2.5) # @detect-zeroes: #optional detect and optimize zero writes (Since 2.1) # (default: off) # @@ -1551,7 +1550,7 @@ '*read-only': 'bool', '*stats-account-invalid': 'bool', '*stats-account-failed': 'bool', - '*stats-intervals': 'str', + '*stats-intervals': ['int'], '*detect-zeroes': 'BlockdevDetectZeroesOptions' } } ## diff --git a/tests/qemu-iotests/136 b/tests/qemu-iotests/136 index f574d83..e8c6937 100644 --- a/tests/qemu-iotests/136 +++ b/tests/qemu-iotests/136 @@ -69,7 +69,7 @@ sector = "%d" def setUp(self): drive_args = [] - drive_args.append("stats-intervals=%d" % interval_length) + drive_args.append("stats-intervals.0=%d" % interval_length) drive_args.append("stats-account-invalid=%s" % (self.account_invalid and "on" or "off")) drive_args.append("stats-account-failed=%s" % |