From: Jason Dillaman <dillaman@redhat.com>
Date: Tue, 15 Mar 2016 20:34:26 +0000 (-0400)
Subject: librbd: implement mirror image resync request API
X-Git-Tag: v10.1.0~70^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F8138%2Fhead;p=ceph.git

librbd: implement mirror image resync request API

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
---

diff --git a/src/librbd/internal.cc b/src/librbd/internal.cc
index 8b10bd1bcdb9..4aa480de1cbb 100644
--- a/src/librbd/internal.cc
+++ b/src/librbd/internal.cc
@@ -2580,7 +2580,31 @@ int validate_mirroring_enabled(ImageCtx *ictx) {
   int mirror_image_resync(ImageCtx *ictx) {
     CephContext *cct = ictx->cct;
     ldout(cct, 20) << __func__ << ": ictx=" << ictx << dendl;
-    return -EOPNOTSUPP;
+
+    int r = validate_mirroring_enabled(ictx);
+    if (r < 0) {
+      return r;
+    }
+
+    std::string mirror_uuid;
+    r = Journal<>::get_tag_owner(ictx, &mirror_uuid);
+    if (r < 0) {
+      lderr(cct) << "failed to determine tag ownership: " << cpp_strerror(r)
+                 << dendl;
+      return r;
+    } else if (mirror_uuid == Journal<>::LOCAL_MIRROR_UUID) {
+      lderr(cct) << "image is primary, cannot resync to itself" << dendl;
+      return -EINVAL;
+    }
+
+    // flag the journal indicating that we want to rebuild the local image
+    r = Journal<>::request_resync(ictx);
+    if (r < 0) {
+      lderr(cct) << "failed to request resync: " << cpp_strerror(r) << dendl;
+      return r;
+    }
+
+    return 0;
   }
 
   int mirror_image_get_info(ImageCtx *ictx, mirror_image_info_t *mirror_image_info,