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| author | Philipp Reisner <philipp.reisner@linbit.com> | 2011-11-11 12:31:20 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-08 16:58:10 +0100 |
| commit | 380207d08e7c4d1b19c0323777278992b4fbf9d6 (patch) | |
| tree | 3a35f3543810eb2a7d87f15dd62a8fe8e13aad76 /include/linux/drbd.h | |
| parent | d10b4ea32bf2b77a3d56a20992cd549978df7b38 (diff) | |
| download | lwn-380207d08e7c4d1b19c0323777278992b4fbf9d6.tar.gz lwn-380207d08e7c4d1b19c0323777278992b4fbf9d6.zip | |
drbd: Load balancing of read requests
New config option for the disk secition "read-balancing", with
the values: prefer-local, prefer-remote, round-robin, when-congested-remote.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'include/linux/drbd.h')
| -rw-r--r-- | include/linux/drbd.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 1e9f754b66ac..157ba3d74dc7 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -102,6 +102,14 @@ enum drbd_on_congestion { OC_DISCONNECT, }; +enum drbd_read_balancing { + RB_PREFER_LOCAL, + RB_PREFER_REMOTE, + RB_ROUND_ROBIN, + RB_LEAST_PENDING, + RB_CONGESTED_REMOTE, +}; + /* KEEP the order, do not delete or insert. Only append. */ enum drbd_ret_code { ERR_CODE_BASE = 100, |