Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | drbd_limits.h |
| 3 | This file is part of DRBD by Philipp Reisner and Lars Ellenberg. |
| 4 | */ |
| 5 | |
| 6 | /* |
| 7 | * Our current limitations. |
| 8 | * Some of them are hard limits, |
| 9 | * some of them are arbitrary range limits, that make it easier to provide |
| 10 | * feedback about nonsense settings for certain configurable values. |
| 11 | */ |
| 12 | |
| 13 | #ifndef DRBD_LIMITS_H |
| 14 | #define DRBD_LIMITS_H 1 |
| 15 | |
| 16 | #define DEBUG_RANGE_CHECK 0 |
| 17 | |
| 18 | #define DRBD_MINOR_COUNT_MIN 1 |
Philipp Reisner | b80c043 | 2011-07-18 11:09:17 +0200 | [diff] [blame] | 19 | #define DRBD_MINOR_COUNT_MAX 255 |
Philipp Reisner | 2b8a90b | 2011-01-10 11:15:17 +0100 | [diff] [blame] | 20 | #define DRBD_MINOR_COUNT_DEF 32 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 21 | #define DRBD_MINOR_COUNT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 22 | |
Andreas Gruenbacher | 0c8e36d | 2011-03-30 16:00:17 +0200 | [diff] [blame] | 23 | #define DRBD_VOLUME_MAX 65535 |
| 24 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 25 | #define DRBD_DIALOG_REFRESH_MIN 0 |
| 26 | #define DRBD_DIALOG_REFRESH_MAX 600 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 27 | #define DRBD_DIALOG_REFRESH_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 28 | |
| 29 | /* valid port number */ |
| 30 | #define DRBD_PORT_MIN 1 |
| 31 | #define DRBD_PORT_MAX 0xffff |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 32 | #define DRBD_PORT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 33 | |
| 34 | /* startup { */ |
| 35 | /* if you want more than 3.4 days, disable */ |
| 36 | #define DRBD_WFC_TIMEOUT_MIN 0 |
| 37 | #define DRBD_WFC_TIMEOUT_MAX 300000 |
| 38 | #define DRBD_WFC_TIMEOUT_DEF 0 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 39 | #define DRBD_WFC_TIMEOUT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 40 | |
| 41 | #define DRBD_DEGR_WFC_TIMEOUT_MIN 0 |
| 42 | #define DRBD_DEGR_WFC_TIMEOUT_MAX 300000 |
| 43 | #define DRBD_DEGR_WFC_TIMEOUT_DEF 0 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 44 | #define DRBD_DEGR_WFC_TIMEOUT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 45 | |
| 46 | #define DRBD_OUTDATED_WFC_TIMEOUT_MIN 0 |
| 47 | #define DRBD_OUTDATED_WFC_TIMEOUT_MAX 300000 |
| 48 | #define DRBD_OUTDATED_WFC_TIMEOUT_DEF 0 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 49 | #define DRBD_OUTDATED_WFC_TIMEOUT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 50 | /* }*/ |
| 51 | |
| 52 | /* net { */ |
| 53 | /* timeout, unit centi seconds |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 54 | * more than one minute timeout is not useful */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 55 | #define DRBD_TIMEOUT_MIN 1 |
| 56 | #define DRBD_TIMEOUT_MAX 600 |
| 57 | #define DRBD_TIMEOUT_DEF 60 /* 6 seconds */ |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 58 | #define DRBD_TIMEOUT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 59 | |
Philipp Reisner | cdfda63 | 2011-07-05 15:38:59 +0200 | [diff] [blame] | 60 | /* If backing disk takes longer than disk_timeout, mark the disk as failed */ |
| 61 | #define DRBD_DISK_TIMEOUT_MIN 0 /* 0 = disabled */ |
| 62 | #define DRBD_DISK_TIMEOUT_MAX 6000 /* 10 Minutes */ |
| 63 | #define DRBD_DISK_TIMEOUT_DEF 0 /* disabled */ |
| 64 | #define DRBD_DISK_TIMEOUT_SCALE '1' |
| 65 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 66 | /* active connection retries when C_WF_CONNECTION */ |
| 67 | #define DRBD_CONNECT_INT_MIN 1 |
| 68 | #define DRBD_CONNECT_INT_MAX 120 |
| 69 | #define DRBD_CONNECT_INT_DEF 10 /* seconds */ |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 70 | #define DRBD_CONNECT_INT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 71 | |
| 72 | /* keep-alive probes when idle */ |
| 73 | #define DRBD_PING_INT_MIN 1 |
| 74 | #define DRBD_PING_INT_MAX 120 |
| 75 | #define DRBD_PING_INT_DEF 10 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 76 | #define DRBD_PING_INT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 77 | |
| 78 | /* timeout for the ping packets.*/ |
| 79 | #define DRBD_PING_TIMEO_MIN 1 |
Lars Ellenberg | f03c254 | 2011-06-20 22:21:19 +0200 | [diff] [blame] | 80 | #define DRBD_PING_TIMEO_MAX 300 |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 81 | #define DRBD_PING_TIMEO_DEF 5 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 82 | #define DRBD_PING_TIMEO_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 83 | |
| 84 | /* max number of write requests between write barriers */ |
| 85 | #define DRBD_MAX_EPOCH_SIZE_MIN 1 |
| 86 | #define DRBD_MAX_EPOCH_SIZE_MAX 20000 |
| 87 | #define DRBD_MAX_EPOCH_SIZE_DEF 2048 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 88 | #define DRBD_MAX_EPOCH_SIZE_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 89 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 90 | /* I don't think that a tcp send buffer of more than 10M is useful */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 91 | #define DRBD_SNDBUF_SIZE_MIN 0 |
| 92 | #define DRBD_SNDBUF_SIZE_MAX (10<<20) |
Lars Ellenberg | 89e1838 | 2009-09-21 10:46:22 +0200 | [diff] [blame] | 93 | #define DRBD_SNDBUF_SIZE_DEF 0 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 94 | #define DRBD_SNDBUF_SIZE_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 95 | |
| 96 | #define DRBD_RCVBUF_SIZE_MIN 0 |
| 97 | #define DRBD_RCVBUF_SIZE_MAX (10<<20) |
Lars Ellenberg | 89e1838 | 2009-09-21 10:46:22 +0200 | [diff] [blame] | 98 | #define DRBD_RCVBUF_SIZE_DEF 0 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 99 | #define DRBD_RCVBUF_SIZE_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 100 | |
| 101 | /* @4k PageSize -> 128kB - 512MB */ |
| 102 | #define DRBD_MAX_BUFFERS_MIN 32 |
| 103 | #define DRBD_MAX_BUFFERS_MAX 131072 |
| 104 | #define DRBD_MAX_BUFFERS_DEF 2048 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 105 | #define DRBD_MAX_BUFFERS_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 106 | |
| 107 | /* @4k PageSize -> 4kB - 512MB */ |
| 108 | #define DRBD_UNPLUG_WATERMARK_MIN 1 |
| 109 | #define DRBD_UNPLUG_WATERMARK_MAX 131072 |
| 110 | #define DRBD_UNPLUG_WATERMARK_DEF (DRBD_MAX_BUFFERS_DEF/16) |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 111 | #define DRBD_UNPLUG_WATERMARK_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 112 | |
| 113 | /* 0 is disabled. |
| 114 | * 200 should be more than enough even for very short timeouts */ |
| 115 | #define DRBD_KO_COUNT_MIN 0 |
| 116 | #define DRBD_KO_COUNT_MAX 200 |
Philipp Reisner | 65d9492 | 2011-07-13 10:24:51 +0200 | [diff] [blame] | 117 | #define DRBD_KO_COUNT_DEF 7 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 118 | #define DRBD_KO_COUNT_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 119 | /* } */ |
| 120 | |
| 121 | /* syncer { */ |
| 122 | /* FIXME allow rate to be zero? */ |
Andreas Gruenbacher | 6394b93 | 2011-05-11 14:29:52 +0200 | [diff] [blame] | 123 | #define DRBD_RESYNC_RATE_MIN 1 |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 124 | /* channel bonding 10 GbE, or other hardware */ |
Andreas Gruenbacher | 6394b93 | 2011-05-11 14:29:52 +0200 | [diff] [blame] | 125 | #define DRBD_RESYNC_RATE_MAX (4 << 20) |
| 126 | #define DRBD_RESYNC_RATE_DEF 250 |
| 127 | #define DRBD_RESYNC_RATE_SCALE 'k' /* kilobytes */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 128 | |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 129 | /* less than 7 would hit performance unnecessarily. */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 130 | #define DRBD_AL_EXTENTS_MIN 7 |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 131 | /* we use u16 as "slot number", (u16)~0 is "FREE". |
| 132 | * If you use >= 292 kB on-disk ring buffer, |
| 133 | * this is the maximum you can use: */ |
| 134 | #define DRBD_AL_EXTENTS_MAX 0xfffe |
Philipp Reisner | 65d9492 | 2011-07-13 10:24:51 +0200 | [diff] [blame] | 135 | #define DRBD_AL_EXTENTS_DEF 1237 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 136 | #define DRBD_AL_EXTENTS_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 137 | |
Andreas Gruenbacher | 309f0b7 | 2011-05-13 01:24:14 +0200 | [diff] [blame] | 138 | #define DRBD_MINOR_NUMBER_MIN -1 |
Andreas Gruenbacher | 0317d9e | 2011-07-13 13:40:30 +0200 | [diff] [blame] | 139 | #define DRBD_MINOR_NUMBER_MAX ((1 << 20) - 1) |
Andreas Gruenbacher | 309f0b7 | 2011-05-13 01:24:14 +0200 | [diff] [blame] | 140 | #define DRBD_MINOR_NUMBER_DEF -1 |
| 141 | #define DRBD_MINOR_NUMBER_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 142 | |
| 143 | /* } */ |
| 144 | |
| 145 | /* drbdsetup XY resize -d Z |
| 146 | * you are free to reduce the device size to nothing, if you want to. |
| 147 | * the upper limit with 64bit kernel, enough ram and flexible meta data |
Lars Ellenberg | 15b493d | 2011-06-28 09:48:48 +0200 | [diff] [blame] | 148 | * is 1 PiB, currently. */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 149 | /* DRBD_MAX_SECTORS */ |
Andreas Gruenbacher | c5482bb | 2011-05-11 14:44:55 +0200 | [diff] [blame] | 150 | #define DRBD_DISK_SIZE_MIN 0 |
Philipp Reisner | d942ae4 | 2011-05-31 13:07:24 +0200 | [diff] [blame] | 151 | #define DRBD_DISK_SIZE_MAX (1 * (2LLU << 40)) |
Andreas Gruenbacher | c5482bb | 2011-05-11 14:44:55 +0200 | [diff] [blame] | 152 | #define DRBD_DISK_SIZE_DEF 0 /* = disabled = no user size... */ |
| 153 | #define DRBD_DISK_SIZE_SCALE 's' /* sectors */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 154 | |
Lars Ellenberg | a5df0e1 | 2011-02-23 12:51:43 +0100 | [diff] [blame] | 155 | #define DRBD_ON_IO_ERROR_DEF EP_DETACH |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 156 | #define DRBD_FENCING_DEF FP_DONT_CARE |
| 157 | #define DRBD_AFTER_SB_0P_DEF ASB_DISCONNECT |
| 158 | #define DRBD_AFTER_SB_1P_DEF ASB_DISCONNECT |
| 159 | #define DRBD_AFTER_SB_2P_DEF ASB_DISCONNECT |
| 160 | #define DRBD_RR_CONFLICT_DEF ASB_DISCONNECT |
Philipp Reisner | 265be2d | 2010-05-31 10:14:17 +0200 | [diff] [blame] | 161 | #define DRBD_ON_NO_DATA_DEF OND_IO_ERROR |
Philipp Reisner | 422028b | 2010-10-27 11:12:07 +0200 | [diff] [blame] | 162 | #define DRBD_ON_CONGESTION_DEF OC_BLOCK |
Philipp Reisner | 380207d | 2011-11-11 12:31:20 +0100 | [diff] [blame] | 163 | #define DRBD_READ_BALANCING_DEF RB_PREFER_LOCAL |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 164 | |
| 165 | #define DRBD_MAX_BIO_BVECS_MIN 0 |
| 166 | #define DRBD_MAX_BIO_BVECS_MAX 128 |
| 167 | #define DRBD_MAX_BIO_BVECS_DEF 0 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 168 | #define DRBD_MAX_BIO_BVECS_SCALE '1' |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 169 | |
Philipp Reisner | 9a31d71 | 2010-07-05 13:42:03 +0200 | [diff] [blame] | 170 | #define DRBD_C_PLAN_AHEAD_MIN 0 |
| 171 | #define DRBD_C_PLAN_AHEAD_MAX 300 |
Philipp Reisner | 65d9492 | 2011-07-13 10:24:51 +0200 | [diff] [blame] | 172 | #define DRBD_C_PLAN_AHEAD_DEF 20 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 173 | #define DRBD_C_PLAN_AHEAD_SCALE '1' |
Philipp Reisner | 67c7ddd | 2010-05-04 11:12:00 +0200 | [diff] [blame] | 174 | |
Philipp Reisner | 9a31d71 | 2010-07-05 13:42:03 +0200 | [diff] [blame] | 175 | #define DRBD_C_DELAY_TARGET_MIN 1 |
| 176 | #define DRBD_C_DELAY_TARGET_MAX 100 |
| 177 | #define DRBD_C_DELAY_TARGET_DEF 10 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 178 | #define DRBD_C_DELAY_TARGET_SCALE '1' |
Philipp Reisner | 67c7ddd | 2010-05-04 11:12:00 +0200 | [diff] [blame] | 179 | |
Philipp Reisner | 9a31d71 | 2010-07-05 13:42:03 +0200 | [diff] [blame] | 180 | #define DRBD_C_FILL_TARGET_MIN 0 |
Philipp Reisner | 00b4253 | 2010-10-05 11:19:39 +0200 | [diff] [blame] | 181 | #define DRBD_C_FILL_TARGET_MAX (1<<20) /* 500MByte in sec */ |
Philipp Reisner | 65d9492 | 2011-07-13 10:24:51 +0200 | [diff] [blame] | 182 | #define DRBD_C_FILL_TARGET_DEF 100 /* Try to place 50KiB in socket send buffer during resync */ |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 183 | #define DRBD_C_FILL_TARGET_SCALE 's' /* sectors */ |
Philipp Reisner | 67c7ddd | 2010-05-04 11:12:00 +0200 | [diff] [blame] | 184 | |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 185 | #define DRBD_C_MAX_RATE_MIN 250 |
Philipp Reisner | 9a31d71 | 2010-07-05 13:42:03 +0200 | [diff] [blame] | 186 | #define DRBD_C_MAX_RATE_MAX (4 << 20) |
| 187 | #define DRBD_C_MAX_RATE_DEF 102400 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 188 | #define DRBD_C_MAX_RATE_SCALE 'k' /* kilobytes */ |
Philipp Reisner | 67c7ddd | 2010-05-04 11:12:00 +0200 | [diff] [blame] | 189 | |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 190 | #define DRBD_C_MIN_RATE_MIN 0 |
Lars Ellenberg | 0f0601f | 2010-08-11 23:40:24 +0200 | [diff] [blame] | 191 | #define DRBD_C_MIN_RATE_MAX (4 << 20) |
Philipp Reisner | 65d9492 | 2011-07-13 10:24:51 +0200 | [diff] [blame] | 192 | #define DRBD_C_MIN_RATE_DEF 250 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 193 | #define DRBD_C_MIN_RATE_SCALE 'k' /* kilobytes */ |
Lars Ellenberg | 0f0601f | 2010-08-11 23:40:24 +0200 | [diff] [blame] | 194 | |
Philipp Reisner | 422028b | 2010-10-27 11:12:07 +0200 | [diff] [blame] | 195 | #define DRBD_CONG_FILL_MIN 0 |
| 196 | #define DRBD_CONG_FILL_MAX (10<<21) /* 10GByte in sectors */ |
| 197 | #define DRBD_CONG_FILL_DEF 0 |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 198 | #define DRBD_CONG_FILL_SCALE 's' /* sectors */ |
Philipp Reisner | 422028b | 2010-10-27 11:12:07 +0200 | [diff] [blame] | 199 | |
| 200 | #define DRBD_CONG_EXTENTS_MIN DRBD_AL_EXTENTS_MIN |
| 201 | #define DRBD_CONG_EXTENTS_MAX DRBD_AL_EXTENTS_MAX |
| 202 | #define DRBD_CONG_EXTENTS_DEF DRBD_AL_EXTENTS_DEF |
Andreas Gruenbacher | 32bdb64 | 2011-05-09 18:26:20 +0200 | [diff] [blame] | 203 | #define DRBD_CONG_EXTENTS_SCALE DRBD_AL_EXTENTS_SCALE |
Philipp Reisner | 422028b | 2010-10-27 11:12:07 +0200 | [diff] [blame] | 204 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 205 | #define DRBD_PROTOCOL_DEF DRBD_PROT_C |
| 206 | |
Andreas Gruenbacher | 7bac3e6 | 2011-05-06 17:50:57 +0200 | [diff] [blame] | 207 | #define DRBD_DISK_BARRIER_DEF 0 |
| 208 | #define DRBD_DISK_FLUSHES_DEF 1 |
| 209 | #define DRBD_DISK_DRAIN_DEF 1 |
| 210 | #define DRBD_MD_FLUSHES_DEF 1 |
| 211 | #define DRBD_TCP_CORK_DEF 1 |
Philipp Reisner | 9a51ab1 | 2012-02-20 21:53:28 +0100 | [diff] [blame] | 212 | #define DRBD_AL_UPDATES_DEF 1 |
Lars Ellenberg | dd4f699 | 2016-06-14 00:26:20 +0200 | [diff] [blame^] | 213 | /* We used to ignore the discard_zeroes_data setting. |
| 214 | * To not change established (and expected) behaviour, |
| 215 | * by default assume that, for discard_zeroes_data=0, |
| 216 | * we can make that an effective discard_zeroes_data=1, |
| 217 | * if we only explicitly zero-out unaligned partial chunks. */ |
| 218 | #define DRBD_DISCARD_ZEROES_IF_ALIGNED 1 |
Andreas Gruenbacher | 7bac3e6 | 2011-05-06 17:50:57 +0200 | [diff] [blame] | 219 | |
| 220 | #define DRBD_ALLOW_TWO_PRIMARIES_DEF 0 |
| 221 | #define DRBD_ALWAYS_ASBP_DEF 0 |
Philipp Reisner | 65d9492 | 2011-07-13 10:24:51 +0200 | [diff] [blame] | 222 | #define DRBD_USE_RLE_DEF 1 |
Lars Ellenberg | aaaba34 | 2014-03-18 12:30:09 +0100 | [diff] [blame] | 223 | #define DRBD_CSUMS_AFTER_CRASH_ONLY_DEF 0 |
Andreas Gruenbacher | 7bac3e6 | 2011-05-06 17:50:57 +0200 | [diff] [blame] | 224 | |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 225 | #define DRBD_AL_STRIPES_MIN 1 |
| 226 | #define DRBD_AL_STRIPES_MAX 1024 |
| 227 | #define DRBD_AL_STRIPES_DEF 1 |
| 228 | #define DRBD_AL_STRIPES_SCALE '1' |
| 229 | |
| 230 | #define DRBD_AL_STRIPE_SIZE_MIN 4 |
| 231 | #define DRBD_AL_STRIPE_SIZE_MAX 16777216 |
| 232 | #define DRBD_AL_STRIPE_SIZE_DEF 32 |
| 233 | #define DRBD_AL_STRIPE_SIZE_SCALE 'k' /* kilobytes */ |
Philipp Reisner | 5d0b17f | 2014-03-18 14:24:35 +0100 | [diff] [blame] | 234 | |
| 235 | #define DRBD_SOCKET_CHECK_TIMEO_MIN 0 |
| 236 | #define DRBD_SOCKET_CHECK_TIMEO_MAX DRBD_PING_TIMEO_MAX |
| 237 | #define DRBD_SOCKET_CHECK_TIMEO_DEF 0 |
| 238 | #define DRBD_SOCKET_CHECK_TIMEO_SCALE '1' |
Philipp Reisner | a5ca66c | 2016-06-14 00:26:14 +0200 | [diff] [blame] | 239 | |
| 240 | #define DRBD_RS_DISCARD_GRANULARITY_MIN 0 |
| 241 | #define DRBD_RS_DISCARD_GRANULARITY_MAX (1<<20) /* 1MiByte */ |
| 242 | #define DRBD_RS_DISCARD_GRANULARITY_DEF 0 /* disabled by default */ |
| 243 | #define DRBD_RS_DISCARD_GRANULARITY_SCALE '1' /* bytes */ |
| 244 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 245 | #endif |