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drbd: New disk option al-updates

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By disabling al-updates one might increase performace. The price for
that is that in case a crashed primary (that had al-updates disabled)
is reintegraded, it will receive a full-resync instead of a bitmap
based resync.

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
2012-02-20 21:53:28 +01:00
parent 26ec92871b
commit 9a51ab1c1b
5 changed files with 30 additions and 4 deletions
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include/linux/drbd.h
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@@ -338,6 +338,7 @@ extern const char *drbd_set_st_err_str(enum drbd_state_rv);
#define MDF_PEER_OUT_DATED (1 << 5)
#define MDF_CRASHED_PRIMARY (1 << 6)
#define MDF_AL_CLEAN (1 << 7)
#define MDF_AL_DISABLED (1 << 8)
enum drbd_uuid_index {
UI_CURRENT,