diff options
| author | Yan, Zheng <zyan@redhat.com> | 2019-07-25 20:16:44 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2019-09-16 12:06:24 +0200 |
| commit | d468e729b74eafdfc8306ca8f77e1f26478d67da (patch) | |
| tree | b277dbf5c2468bc199014d8ff665563510539f43 /fs/ceph/mds_client.c | |
| parent | 5e3ded1bb642f2d7a6ded6deeafb155d5b5312f2 (diff) | |
ceph: add helper function that forcibly reconnects to ceph cluster.
It closes mds sessions, drop all caps and invalidates page caches,
then use new entity address to reconnect to the cluster.
After reconnect, all dirty data/metadata are dropped, file locks
get lost sliently. Open files continue to work because client will
try renewing caps on later read/write.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/mds_client.c')
| -rw-r--r-- | fs/ceph/mds_client.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index df4bea231017..ed4d20a54af7 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1394,9 +1394,12 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap, struct ceph_cap_flush *cf; struct ceph_mds_client *mdsc = fsc->mdsc; - if (ci->i_wrbuffer_ref > 0 && - READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) - invalidate = true; + if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) { + if (inode->i_data.nrpages > 0) + invalidate = true; + if (ci->i_wrbuffer_ref > 0) + mapping_set_error(&inode->i_data, -EIO); + } while (!list_empty(&ci->i_cap_flush_list)) { cf = list_first_entry(&ci->i_cap_flush_list, @@ -4369,7 +4372,12 @@ void ceph_mdsc_force_umount(struct ceph_mds_client *mdsc) session = __ceph_lookup_mds_session(mdsc, mds); if (!session) continue; + + if (session->s_state == CEPH_MDS_SESSION_REJECTED) + __unregister_session(mdsc, session); + __wake_requests(mdsc, &session->s_waiting); mutex_unlock(&mdsc->mutex); + mutex_lock(&session->s_mutex); __close_session(mdsc, session); if (session->s_state == CEPH_MDS_SESSION_CLOSING) { @@ -4378,6 +4386,7 @@ void ceph_mdsc_force_umount(struct ceph_mds_client *mdsc) } mutex_unlock(&session->s_mutex); ceph_put_mds_session(session); + mutex_lock(&mdsc->mutex); kick_requests(mdsc, mds); } |