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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2010-08-11 23:40:24 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2010-10-14 18:38:20 +0200 |
| commit | 0f0601f4ea2f53cfd8bcae060fb03d9bbde070ec (patch) | |
| tree | 42bcbd8edf48c9cee526893108cc69b4918a9f64 /include | |
| parent | drbd: reduce code duplication when receiving data requests (diff) | |
| download | linux-0f0601f4ea2f53cfd8bcae060fb03d9bbde070ec.tar.xz linux-0f0601f4ea2f53cfd8bcae060fb03d9bbde070ec.zip | |
drbd: new configuration parameter c-min-rate
We now track the data rate of locally submitted resync related requests,
and can thus detect non-resync activity on the lower level device.
If the current sync rate is above c-min-rate, and the lower level device
appears to be busy, we throttle the resyncer.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/drbd_limits.h | 4 | ||||
| -rw-r--r-- | include/linux/drbd_nl.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 06dbba47a8ef..0b24ded6fffd 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -150,5 +150,9 @@ #define DRBD_C_MAX_RATE_MAX (4 << 20) #define DRBD_C_MAX_RATE_DEF 102400 +#define DRBD_C_MIN_RATE_MIN 0 /* kByte/sec */ +#define DRBD_C_MIN_RATE_MAX (4 << 20) +#define DRBD_C_MIN_RATE_DEF 4096 + #undef RANGE #endif diff --git a/include/linux/drbd_nl.h b/include/linux/drbd_nl.h index e23683c87ca1..ade91107c9a5 100644 --- a/include/linux/drbd_nl.h +++ b/include/linux/drbd_nl.h @@ -92,6 +92,7 @@ NL_PACKET(syncer_conf, 8, 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_INTEGER( 80, T_MAY_IGNORE, c_min_rate) ) NL_PACKET(invalidate, 9, ) |