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drbd: New sync parameters for the smart resync rate controller

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Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner
2010-07-05 13:42:03 +02:00
parent d28fd092a5
commit 9a31d7164d
4 changed files with 25 additions and 13 deletions
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6
drivers/block/drbd/drbd_main.c
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@@ -2690,7 +2690,11 @@ static void drbd_set_defaults(struct drbd_conf *mdev)
/* .cpu_mask = */ {}, 0, /* .cpu_mask = */ {}, 0,
/* .csums_alg = */ {}, 0, /* .csums_alg = */ {}, 0,
/* .use_rle = */ 0, /* .use_rle = */ 0,
/* .on_no_data = */ DRBD_ON_NO_DATA_DEF /* .on_no_data = */ DRBD_ON_NO_DATA_DEF,
/* .c_plan_ahead = */ DRBD_C_PLAN_AHEAD_DEF,
/* .c_delay_target = */ DRBD_C_DELAY_TARGET_DEF,
/* .c_fill_target = */ DRBD_C_FILL_TARGET_DEF,
/* .c_max_rate = */ DRBD_C_MAX_RATE_DEF
}; };
/* Have to use that way, because the layout differs between /* Have to use that way, because the layout differs between

4
drivers/block/drbd/drbd_nl.c
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@@ -1599,6 +1599,10 @@ static int drbd_nl_syncer_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *n
sc.after = DRBD_AFTER_DEF; sc.after = DRBD_AFTER_DEF;
sc.al_extents = DRBD_AL_EXTENTS_DEF; sc.al_extents = DRBD_AL_EXTENTS_DEF;
sc.on_no_data = DRBD_ON_NO_DATA_DEF; sc.on_no_data = DRBD_ON_NO_DATA_DEF;
sc.c_plan_ahead = DRBD_C_PLAN_AHEAD_DEF;
sc.c_delay_target = DRBD_C_DELAY_TARGET_DEF;
sc.c_fill_target = DRBD_C_FILL_TARGET_DEF;
sc.c_max_rate = DRBD_C_MAX_RATE_DEF;
} else } else
memcpy(&sc, &mdev->sync_conf, sizeof(struct syncer_conf)); memcpy(&sc, &mdev->sync_conf, sizeof(struct syncer_conf));

24
include/linux/drbd_limits.h
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@@ -134,21 +134,21 @@
#define DRBD_MAX_BIO_BVECS_MAX 128 #define DRBD_MAX_BIO_BVECS_MAX 128
#define DRBD_MAX_BIO_BVECS_DEF 0 #define DRBD_MAX_BIO_BVECS_DEF 0
#define DRBD_DP_VOLUME_MIN 4 #define DRBD_C_PLAN_AHEAD_MIN 0
#define DRBD_DP_VOLUME_MAX 1048576 #define DRBD_C_PLAN_AHEAD_MAX 300
#define DRBD_DP_VOLUME_DEF 16384 #define DRBD_C_PLAN_AHEAD_DEF 0 /* RS rate controller disabled by default */
#define DRBD_DP_INTERVAL_MIN 1 #define DRBD_C_DELAY_TARGET_MIN 1
#define DRBD_DP_INTERVAL_MAX 600 #define DRBD_C_DELAY_TARGET_MAX 100
#define DRBD_DP_INTERVAL_DEF 5 #define DRBD_C_DELAY_TARGET_DEF 10
#define DRBD_RS_THROTTLE_TH_MIN 1 #define DRBD_C_FILL_TARGET_MIN 0
#define DRBD_RS_THROTTLE_TH_MAX 600 #define DRBD_C_FILL_TARGET_MAX 100000
#define DRBD_RS_THROTTLE_TH_DEF 20 #define DRBD_C_FILL_TARGET_DEF 0 /* By default disabled -> controlled by delay_target */
#define DRBD_RS_HOLD_OFF_TH_MIN 1 #define DRBD_C_MAX_RATE_MIN 250 /* kByte/sec */
#define DRBD_RS_HOLD_OFF_TH_MAX 6000 #define DRBD_C_MAX_RATE_MAX (4 << 20)
#define DRBD_RS_HOLD_OFF_TH_DEF 100 #define DRBD_C_MAX_RATE_DEF 102400
#undef RANGE #undef RANGE
#endif #endif

4
include/linux/drbd_nl.h
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@@ -88,6 +88,10 @@ NL_PACKET(syncer_conf, 8,
NL_STRING( 64, T_MAY_IGNORE, csums_alg, SHARED_SECRET_MAX) NL_STRING( 64, T_MAY_IGNORE, csums_alg, SHARED_SECRET_MAX)
NL_BIT( 65, T_MAY_IGNORE, use_rle) NL_BIT( 65, T_MAY_IGNORE, use_rle)
NL_INTEGER( 75, T_MAY_IGNORE, on_no_data) NL_INTEGER( 75, T_MAY_IGNORE, on_no_data)
NL_INTEGER( 76, T_MAY_IGNORE, c_plan_ahead)
NL_INTEGER( 77, T_MAY_IGNORE, c_delay_target)
NL_INTEGER( 78, T_MAY_IGNORE, c_fill_target)
NL_INTEGER( 79, T_MAY_IGNORE, c_max_rate)
) )
NL_PACKET(invalidate, 9, ) NL_PACKET(invalidate, 9, )