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libceph: add update_authorizer auth method

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Currently the messenger calls out to a get_authorizer con op, which will
create a new authorizer if it doesn't yet have one.  In the meantime, when
we rotate our service keys, the authorizer doesn't get updated.  Eventually
it will be rejected by the server on a new connection attempt and get
invalidated, and we will then rebuild a new authorizer, but this is not
ideal.

Instead, if we do have an authorizer, call a new update_authorizer op that
will verify that the current authorizer is using the latest secret.  If it
is not, we will build a new one that does.  This avoids the transient
failure.

This fixes one of the sorry sequence of events for bug

	http://tracker.ceph.com/issues/4282

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
This commit is contained in:
Sage Weil
2013-03-25 10:26:01 -07:00
parent 4b8e8b5d78
commit 0bed9b5c52
5 changed files with 38 additions and 1 deletions
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7
fs/ceph/mds_client.c
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@@ -3445,7 +3445,12 @@ static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
}
if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) {
int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_MDS,
auth);
auth);
if (ret)
return ERR_PTR(ret);
} else if (ac->ops && ac->ops_update_authorizer) {
int ret = ac->ops->update_authorizer(ac, CEPH_ENTITY_TYPE_MDS,
auth);
if (ret)
return ERR_PTR(ret);
}