diff options
| author | Philipp Reisner <philipp.reisner@linbit.com> | 2011-07-13 10:24:51 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-08 16:57:53 +0100 |
| commit | 65d94927e036cd8e8e1406fa7fc387b4ae730159 (patch) | |
| tree | f94163859ca2af88cc7d24dc9356afcb9f7d867e /include/linux/drbd_limits.h | |
| parent | 367d675da8fa0041e0f336ecf940992837cc4c50 (diff) | |
| download | lwn-65d94927e036cd8e8e1406fa7fc387b4ae730159.tar.gz lwn-65d94927e036cd8e8e1406fa7fc387b4ae730159.zip | |
drbd: Changed some defaults
* Enabled the resync controller, with a fill target of 50Kib. That gives
reasonable resync speeds without tuning. A much better default than
the 250KiB/s fixed.
* Enable bitmap compression. It is save to use, and most people have
more CPU power than network bandwidth.
* ko-count of 7: Abort a connection if the peer fails to process a
write request within 42 seconds.
* al-extents of 1237: ~5 GiB seems to be a much more sane default
these days.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'include/linux/drbd_limits.h')
| -rw-r--r-- | include/linux/drbd_limits.h | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index ddd332db2a5d..defdebfecb72 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -16,7 +16,7 @@ #define DEBUG_RANGE_CHECK 0 #define DRBD_MINOR_COUNT_MIN 1 -#define DRBD_MINOR_COUNT_MAX 256 +#define DRBD_MINOR_COUNT_MAX (1U << 20) #define DRBD_MINOR_COUNT_DEF 32 #define DRBD_VOLUME_MAX 65535 @@ -99,7 +99,7 @@ * 200 should be more than enough even for very short timeouts */ #define DRBD_KO_COUNT_MIN 0 #define DRBD_KO_COUNT_MAX 200 -#define DRBD_KO_COUNT_DEF 0 +#define DRBD_KO_COUNT_DEF 7 /* } */ /* syncer { */ @@ -117,7 +117,7 @@ * 919 * 7 = 6433 */ #define DRBD_AL_EXTENTS_MIN 7 #define DRBD_AL_EXTENTS_MAX 6433 -#define DRBD_AL_EXTENTS_DEF 127 +#define DRBD_AL_EXTENTS_DEF 1237 #define DRBD_MINOR_NUMBER_MIN -1 #define DRBD_MINOR_NUMBER_MAX (1<<30) @@ -151,7 +151,7 @@ #define DRBD_C_PLAN_AHEAD_MIN 0 #define DRBD_C_PLAN_AHEAD_MAX 300 -#define DRBD_C_PLAN_AHEAD_DEF 0 /* RS rate controller disabled by default */ +#define DRBD_C_PLAN_AHEAD_DEF 20 #define DRBD_C_DELAY_TARGET_MIN 1 #define DRBD_C_DELAY_TARGET_MAX 100 @@ -159,7 +159,7 @@ #define DRBD_C_FILL_TARGET_MIN 0 #define DRBD_C_FILL_TARGET_MAX (1<<20) /* 500MByte in sec */ -#define DRBD_C_FILL_TARGET_DEF 0 /* By default disabled -> controlled by delay_target */ +#define DRBD_C_FILL_TARGET_DEF 100 /* Try to place 50KiB in socket send buffer during resync */ #define DRBD_C_MAX_RATE_MIN 250 /* kByte/sec */ #define DRBD_C_MAX_RATE_MAX (4 << 20) @@ -167,7 +167,7 @@ #define DRBD_C_MIN_RATE_MIN 0 /* kByte/sec */ #define DRBD_C_MIN_RATE_MAX (4 << 20) -#define DRBD_C_MIN_RATE_DEF 4096 +#define DRBD_C_MIN_RATE_DEF 250 #define DRBD_CONG_FILL_MIN 0 #define DRBD_CONG_FILL_MAX (10<<21) /* 10GByte in sectors */ @@ -187,6 +187,6 @@ #define DRBD_ALLOW_TWO_PRIMARIES_DEF 0 #define DRBD_ALWAYS_ASBP_DEF 0 -#define DRBD_USE_RLE_DEF 0 +#define DRBD_USE_RLE_DEF 1 #endif |