From 513a8243d67f8e8d27f2883bd2f18bc87c7ca376 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Tue, 13 May 2014 11:19:26 +0400 Subject: libceph: mon_get_version request infrastructure Add support for mon_get_version requests to libceph. This reuses much of the ceph_mon_generic_request infrastructure, with one exception. Older OSDs don't set mon_get_version reply hdr->tid even if the original request had a non-zero tid, which makes it impossible to lookup ceph_mon_generic_request contexts by tid in get_generic_reply() for such replies. As a workaround, we allocate a reply message on the reply path. This can probably interfere with revoke, but I don't see a better way. Signed-off-by: Ilya Dryomov Reviewed-by: Sage Weil --- include/linux/ceph/mon_client.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'include/linux/ceph') diff --git a/include/linux/ceph/mon_client.h b/include/linux/ceph/mon_client.h index a486f39..585ef94 100644 --- a/include/linux/ceph/mon_client.h +++ b/include/linux/ceph/mon_client.h @@ -40,9 +40,9 @@ struct ceph_mon_request { }; /* - * ceph_mon_generic_request is being used for the statfs and poolop requests - * which are bening done a bit differently because we need to get data back - * to the caller + * ceph_mon_generic_request is being used for the statfs, poolop and + * mon_get_version requests which are being done a bit differently + * because we need to get data back to the caller */ struct ceph_mon_generic_request { struct kref kref; @@ -108,6 +108,9 @@ extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, struct ceph_statfs *buf); +extern int ceph_monc_do_get_version(struct ceph_mon_client *monc, + const char *what, u64 *newest); + extern int ceph_monc_open_session(struct ceph_mon_client *monc); extern int ceph_monc_validate_auth(struct ceph_mon_client *monc); -- cgit v1.1