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authorDouglas Fuller <dfuller@redhat.com>2017-08-16 17:19:27 +0300
committerIlya Dryomov <idryomov@gmail.com>2017-09-06 20:56:49 +0300
commit06d74376c8af32f5b8d777a943aa4dc99165088b (patch)
treee3a431e2eaae92a5fc64bc8e55853367efb7cc30 /net/ceph/mon_client.c
parent92776fd2c230f80be910cf33acd99682345209cd (diff)
downloadlinux-06d74376c8af32f5b8d777a943aa4dc99165088b.tar.xz
ceph: more accurate statfs
Improve accuracy of statfs reporting for Ceph filesystems comprising exactly one data pool. In this case, the Ceph monitor can now report the space usage for the single data pool instead of the global data for the entire Ceph cluster. Include support for this message in mon_client and leverage it in ceph/super. Signed-off-by: Douglas Fuller <dfuller@redhat.com> Reviewed-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net/ceph/mon_client.c')
-rw-r--r--net/ceph/mon_client.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 875675765531..63edc6e5f026 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -676,7 +676,8 @@ bad:
/*
* Do a synchronous statfs().
*/
-int ceph_monc_do_statfs(struct ceph_mon_client *monc, struct ceph_statfs *buf)
+int ceph_monc_do_statfs(struct ceph_mon_client *monc, u64 data_pool,
+ struct ceph_statfs *buf)
{
struct ceph_mon_generic_request *req;
struct ceph_mon_statfs *h;
@@ -696,6 +697,7 @@ int ceph_monc_do_statfs(struct ceph_mon_client *monc, struct ceph_statfs *buf)
goto out;
req->u.st = buf;
+ req->request->hdr.version = cpu_to_le16(2);
mutex_lock(&monc->mutex);
register_generic_request(req);
@@ -705,6 +707,8 @@ int ceph_monc_do_statfs(struct ceph_mon_client *monc, struct ceph_statfs *buf)
h->monhdr.session_mon = cpu_to_le16(-1);
h->monhdr.session_mon_tid = 0;
h->fsid = monc->monmap->fsid;
+ h->contains_data_pool = (data_pool != CEPH_NOPOOL);
+ h->data_pool = cpu_to_le64(data_pool);
send_generic_request(monc, req);
mutex_unlock(&monc->mutex);