diff options
| author | Xiubo Li <xiubli@redhat.com> | 2019-12-10 20:29:40 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 16:36:07 +0100 |
| commit | b817cc9f7d50bacbb6bd9b0f764432bdac68327c (patch) | |
| tree | 95a8aa83d014102018c17f434a852afe78713065 /fs | |
| parent | e534bec3712fc768f133defd6303353087bf90c8 (diff) | |
ceph: check availability of mds cluster on mount after wait timeout
[ Upstream commit 97820058fb2831a4b203981fa2566ceaaa396103 ]
If all the MDS daemons are down for some reason, then the first mount
attempt will fail with EIO after the mount request times out. A mount
attempt will also fail with EIO if all of the MDS's are laggy.
This patch changes the code to return -EHOSTUNREACH in these situations
and adds a pr_info error message to help the admin determine the cause.
URL: https://tracker.ceph.com/issues/4386
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ceph/mds_client.c | 3 | ||||
| -rw-r--r-- | fs/ceph/super.c | 5 |
2 files changed, 6 insertions, 2 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index b968334f841e..f36ddfea4997 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2261,8 +2261,7 @@ static int __do_request(struct ceph_mds_client *mdsc, if (!(mdsc->fsc->mount_options->flags & CEPH_MOUNT_OPT_MOUNTWAIT) && !ceph_mdsmap_is_cluster_available(mdsc->mdsmap)) { - err = -ENOENT; - pr_info("probably no mds server is up\n"); + err = -EHOSTUNREACH; goto finish; } } diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 088c4488b449..6b10b20bfe32 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -1055,6 +1055,11 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type, return res; out_splat: + if (!ceph_mdsmap_is_cluster_available(fsc->mdsc->mdsmap)) { + pr_info("No mds server is up or the cluster is laggy\n"); + err = -EHOSTUNREACH; + } + ceph_mdsc_close_sessions(fsc->mdsc); deactivate_locked_super(sb); goto out_final; |