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| author | Yehuda Sadeh <yehuda@hq.newdream.net> | 2011-07-12 16:56:57 -0700 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-07-26 11:29:04 -0700 |
| commit | 79e3057c4c9d32b88e6745fd220d91b0a8b2030b (patch) | |
| tree | fb6f4bff64c4e6014af3bdaa5284e921d24111bd /drivers/block | |
| parent | 2f90b852e3ae73889d7f6de6ecf429b9b6a6b103 (diff) | |
| download | lwn-79e3057c4c9d32b88e6745fd220d91b0a8b2030b.tar.gz lwn-79e3057c4c9d32b88e6745fd220d91b0a8b2030b.zip | |
rbd: cancel watch request when releasing the device
We were missing this cleanup, so when a device was released
the osd didn't clean up its watchers list, so following notifications
could be slow as osd needed to timeout on the client.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 1278098624e6..7392d7af7eab 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1253,6 +1253,35 @@ fail: return ret; } +/* + * Request sync osd unwatch + */ +static int rbd_req_sync_unwatch(struct rbd_device *dev, + const char *obj) +{ + struct ceph_osd_req_op *ops; + + int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_WATCH, 0); + if (ret < 0) + return ret; + + ops[0].watch.ver = 0; + ops[0].watch.cookie = cpu_to_le64(dev->watch_event->cookie); + ops[0].watch.flag = 0; + + ret = rbd_req_sync_op(dev, NULL, + CEPH_NOSNAP, + 0, + CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK, + ops, + 1, obj, 0, 0, NULL, NULL, NULL); + + rbd_destroy_ops(ops); + ceph_osdc_cancel_event(dev->watch_event); + dev->watch_event = NULL; + return ret; +} + struct rbd_notify_info { struct rbd_device *dev; }; @@ -2290,7 +2319,7 @@ static void rbd_dev_release(struct device *dev) ceph_osdc_unregister_linger_request(&rbd_dev->client->osdc, rbd_dev->watch_request); if (rbd_dev->watch_event) - ceph_osdc_cancel_event(rbd_dev->watch_event); + rbd_req_sync_unwatch(rbd_dev, rbd_dev->obj_md_name); rbd_put_client(rbd_dev); |