From: Mingxin Liu <mingxin@xsky.com>
Date: Mon, 27 Jun 2016 06:35:45 +0000 (+0800)
Subject: tools/rados: add --with-clones option to include clones for cache-flush/cache-evict
X-Git-Tag: v10.2.6~30^2~3^2~1
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=c74a4fa811e40dda2ed331ca885183542c301913;p=ceph.git

tools/rados: add --with-clones option to include clones for cache-flush/cache-evict

Signed-off-by: Mingxin Liu <mingxin@xsky.com>
(cherry picked from commit 3dd9fa2fb39c76ba3977d7bc09cd28bb3465d56c)
---

diff --git a/src/tools/rados/rados.cc b/src/tools/rados/rados.cc
index 4f53a68ed8a7a..f91835dc63e4b 100644
--- a/src/tools/rados/rados.cc
+++ b/src/tools/rados/rados.cc
@@ -219,6 +219,8 @@ void usage(ostream& out)
 "   --read-percent                   percent of operations that are read\n"
 "   --target-throughput              target throughput (in bytes)\n"
 "   --run-length                     total time (in seconds)\n"
+"CACHE POOLS OPTIONS:\n"
+"   --with-clones                    include clones when doing flush or evict\n"
     ;
 }
 
@@ -1548,6 +1550,7 @@ static int rados_tool_common(const std::map < std::string, std::string > &opts,
   bool cleanup = true;
   bool no_verify = false;
   bool use_striper = false;
+  bool with_clones = false;
   const char *snapname = NULL;
   snap_t snapid = CEPH_NOSNAP;
   std::map<std::string, std::string>::const_iterator i;
@@ -1755,6 +1758,10 @@ static int rados_tool_common(const std::map < std::string, std::string > &opts,
   if (i != opts.end()) {
     bench_write_dest |= static_cast<int>(OP_WRITE_DEST_XATTR);
   }
+  i = opts.find("with-clones");
+  if (i != opts.end()) {
+    with_clones = true;
+  }
 
   // open rados
   ret = rados.init_with_context(g_ceph_context);
@@ -3167,31 +3174,100 @@ static int rados_tool_common(const std::map < std::string, std::string > &opts,
     if (!pool_name || nargs.size() < 2)
       usage_exit();
     string oid(nargs[1]);
-    ret = do_cache_flush(io_ctx, oid);
-    if (ret < 0) {
-      cerr << "error from cache-flush " << oid << ": "
-	   << cpp_strerror(ret) << std::endl;
-      goto out;
+    if (with_clones) {
+      snap_set_t ls;
+      io_ctx.snap_set_read(LIBRADOS_SNAP_DIR);
+      ret = io_ctx.list_snaps(oid, &ls);
+      if (ret < 0) {
+        cerr << "error listing snapshots " << pool_name << "/" << oid << ": "
+             << cpp_strerror(ret) << std::endl;
+        goto out;
+      }
+      for (std::vector<clone_info_t>::iterator ci = ls.clones.begin();
+           ci != ls.clones.end(); ++ci) {
+        if (snapid != CEPH_NOSNAP && ci->cloneid > snapid)
+          break;
+        io_ctx.snap_set_read(ci->cloneid);
+        ret = do_cache_flush(io_ctx, oid);
+        if (ret < 0) {
+          cerr << "error from cache-flush " << oid << ": "
+               << cpp_strerror(ret) << std::endl;
+          goto out;
+        }
+      }
+    } else {
+      ret = do_cache_flush(io_ctx, oid);
+      if (ret < 0) {
+        cerr << "error from cache-flush " << oid << ": "
+	     << cpp_strerror(ret) << std::endl;
+        goto out;
+      }
     }
   } else if (strcmp(nargs[0], "cache-try-flush") == 0) {
     if (!pool_name || nargs.size() < 2)
       usage_exit();
     string oid(nargs[1]);
-    ret = do_cache_try_flush(io_ctx, oid);
-    if (ret < 0) {
-      cerr << "error from cache-try-flush " << oid << ": "
-	   << cpp_strerror(ret) << std::endl;
-      goto out;
+    if (with_clones) {
+      snap_set_t ls;
+      io_ctx.snap_set_read(LIBRADOS_SNAP_DIR);
+      ret = io_ctx.list_snaps(oid, &ls);
+      if (ret < 0) {
+        cerr << "error listing snapshots " << pool_name << "/" << oid << ": "
+             << cpp_strerror(ret) << std::endl;
+        goto out;
+      }
+      for (std::vector<clone_info_t>::iterator ci = ls.clones.begin();
+           ci != ls.clones.end(); ++ci) {
+        if (snapid != CEPH_NOSNAP && ci->cloneid > snapid)
+          break;
+        io_ctx.snap_set_read(ci->cloneid);
+        ret = do_cache_try_flush(io_ctx, oid);
+        if (ret < 0) {
+          cerr << "error from cache-flush " << oid << ": "
+               << cpp_strerror(ret) << std::endl;
+          goto out;
+        }
+      }
+    } else {
+      ret = do_cache_try_flush(io_ctx, oid);
+      if (ret < 0) {
+        cerr << "error from cache-flush " << oid << ": "
+             << cpp_strerror(ret) << std::endl;
+        goto out;
+      }
     }
   } else if (strcmp(nargs[0], "cache-evict") == 0) {
     if (!pool_name || nargs.size() < 2)
       usage_exit();
     string oid(nargs[1]);
-    ret = do_cache_evict(io_ctx, oid);
-    if (ret < 0) {
-      cerr << "error from cache-evict " << oid << ": "
-	   << cpp_strerror(ret) << std::endl;
-      goto out;
+    if (with_clones) {
+      snap_set_t ls;
+      io_ctx.snap_set_read(LIBRADOS_SNAP_DIR);
+      ret = io_ctx.list_snaps(oid, &ls);
+      if (ret < 0) {
+        cerr << "error listing snapshots " << pool_name << "/" << oid << ": "
+             << cpp_strerror(ret) << std::endl;
+        goto out;
+      }
+      for (std::vector<clone_info_t>::iterator ci = ls.clones.begin();
+           ci != ls.clones.end(); ++ci) {
+        if (snapid != CEPH_NOSNAP && ci->cloneid > snapid)
+          break;
+        io_ctx.snap_set_read(ci->cloneid);
+        ret = do_cache_evict(io_ctx, oid);
+        if (ret < 0) {
+          cerr << "error from cache-flush " << oid << ": "
+               << cpp_strerror(ret) << std::endl;
+          goto out;
+        }
+      }
+    } else {
+      ret = do_cache_evict(io_ctx, oid);
+      if (ret < 0) {
+        cerr << "error from cache-flush " << oid << ": "
+             << cpp_strerror(ret) << std::endl;
+        goto out;
+      }
     }
   } else if (strcmp(nargs[0], "cache-flush-evict-all") == 0) {
     if (!pool_name)
@@ -3410,6 +3486,8 @@ int main(int argc, const char **argv)
       opts["write-dest-obj"] = "true";
     } else if (ceph_argparse_flag(args, i, "--write-xattr", (char*)NULL)) {
       opts["write-dest-xattr"] = "true";
+    } else if (ceph_argparse_flag(args, i, "--with-clones", (char*)NULL)) {
+      opts["with-clones"] = "true";
     } else {
       if (val[0] == '-')
         usage_exit();