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authorJosef Bacik <josef@toxicpanda.com>2017-04-06 17:02:04 -0400
committerJens Axboe <axboe@fb.com>2017-04-17 09:58:42 -0600
commit560bc4b39952ed77cdb0000992e9415b0ee89edb (patch)
tree0caccc78ca51712357d01f781addf324c7eb0e8e /include
parent2516ab1543fdd1f9d08385d73cae51f668a9f3dc (diff)
nbd: handle dead connections
Sometimes we like to upgrade our server without making all of our clients freak out and reconnect. This patch provides a way to specify a dead connection timeout to allow us to pause all requests and wait for new connections to be opened. With this in place I can take down the nbd server for less than the dead connection timeout time and bring it back up and everything resumes gracefully. Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
-rw-r--r--include/uapi/linux/nbd-netlink.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/nbd-netlink.h b/include/uapi/linux/nbd-netlink.h
index b69105cc8eea..c2209c75626c 100644
--- a/include/uapi/linux/nbd-netlink.h
+++ b/include/uapi/linux/nbd-netlink.h
@@ -32,6 +32,7 @@ enum {
NBD_ATTR_SERVER_FLAGS,
NBD_ATTR_CLIENT_FLAGS,
NBD_ATTR_SOCKETS,
+ NBD_ATTR_DEAD_CONN_TIMEOUT,
__NBD_ATTR_MAX,
};
#define NBD_ATTR_MAX (__NBD_ATTR_MAX - 1)