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drbd: Four new configuration settings for resync speed control 

To reasonably control resync speed over drbd-proxy connections,
drbd has to measure the current delay of packets transmitted over
the (possibly congested) data socket vs the meta-data socket.

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 2010-05-04 11:12:00 +02:00
parent 7237bc430f
commit 67c7ddd055
3 changed files with 24 additions and 0 deletions
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4
drivers/block/drbd/drbd_nl.c
View File

@ -1555,6 +1555,10 @@ static int drbd_nl_syncer_conf(struct drbd_conf *mdev, struct drbd_nl_cfg_req *n
sc.rate = DRBD_RATE_DEF;
sc.after = DRBD_AFTER_DEF;
sc.al_extents = DRBD_AL_EXTENTS_DEF;
sc.dp_volume = DRBD_DP_VOLUME_DEF;
sc.dp_interval = DRBD_DP_INTERVAL_DEF;
sc.throttle_th = DRBD_RS_THROTTLE_TH_DEF;
sc.hold_off_th = DRBD_RS_HOLD_OFF_TH_DEF;
} else
memcpy(&sc, &mdev->sync_conf, sizeof(struct syncer_conf));

16
include/linux/drbd_limits.h
View File

@ -133,5 +133,21 @@
#define DRBD_MAX_BIO_BVECS_MAX 128
#define DRBD_MAX_BIO_BVECS_DEF 0
#define DRBD_DP_VOLUME_MIN 4
#define DRBD_DP_VOLUME_MAX 1048576
#define DRBD_DP_VOLUME_DEF 16384
#define DRBD_DP_INTERVAL_MIN 1
#define DRBD_DP_INTERVAL_MAX 600
#define DRBD_DP_INTERVAL_DEF 5
#define DRBD_RS_THROTTLE_TH_MIN 1
#define DRBD_RS_THROTTLE_TH_MAX 600
#define DRBD_RS_THROTTLE_TH_DEF 20
#define DRBD_RS_HOLD_OFF_TH_MIN 1
#define DRBD_RS_HOLD_OFF_TH_MAX 6000
#define DRBD_RS_HOLD_OFF_TH_DEF 100
#undef RANGE
#endif

4
include/linux/drbd_nl.h
View File

@ -78,6 +78,10 @@ NL_PACKET(syncer_conf, 8,
NL_INTEGER( 30, T_MAY_IGNORE, rate)
NL_INTEGER( 31, T_MAY_IGNORE, after)
NL_INTEGER( 32, T_MAY_IGNORE, al_extents)
NL_INTEGER( 71, T_MAY_IGNORE, dp_volume)
NL_INTEGER( 72, T_MAY_IGNORE, dp_interval)
NL_INTEGER( 73, T_MAY_IGNORE, throttle_th)
NL_INTEGER( 74, T_MAY_IGNORE, hold_off_th)
NL_STRING( 52, T_MAY_IGNORE, verify_alg, SHARED_SECRET_MAX)
NL_STRING( 51, T_MAY_IGNORE, cpu_mask, 32)
NL_STRING( 64, T_MAY_IGNORE, csums_alg, SHARED_SECRET_MAX)