diff mbox series

[4.19,63/95] libceph: ignore pool overlay and cache logic on redirects

Message ID 20200601174031.022840356@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH June 1, 2020, 5:54 p.m. UTC 
From: Jerry Lee <leisurelysw24@gmail.com>

[ Upstream commit 890bd0f8997ae6ac0a367dd5146154a3963306dd ]

OSD client should ignore cache/overlay flag if got redirect reply.
Otherwise, the client hangs when the cache tier is in forward mode.

[ idryomov: Redirects are effectively deprecated and no longer
  used or tested.  The original tiering modes based on redirects
  are inherently flawed because redirects can race and reorder,
  potentially resulting in data corruption.  The new proxy and
  readproxy tiering modes should be used instead of forward and
  readforward.  Still marking for stable as obviously correct,
  though. ]

Cc: stable@vger.kernel.org
URL: https://tracker.ceph.com/issues/23296
URL: https://tracker.ceph.com/issues/36406
Signed-off-by: Jerry Lee <leisurelysw24@gmail.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/ceph/osd_client.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 76c41a84550e..b8c4aea42917 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -3540,7 +3540,9 @@  static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg)
 		 * supported.
 		 */
 		req->r_t.target_oloc.pool = m.redirect.oloc.pool;
-		req->r_flags |= CEPH_OSD_FLAG_REDIRECTED;
+		req->r_flags |= CEPH_OSD_FLAG_REDIRECTED |
+				CEPH_OSD_FLAG_IGNORE_OVERLAY |
+				CEPH_OSD_FLAG_IGNORE_CACHE;
 		req->r_tid = 0;
 		__submit_request(req, false);
 		goto out_unlock_osdc;