From: Andras Elso <elso.andras@gmail.com>
Date: Mon, 6 May 2013 23:20:37 +0000 (+0200)
Subject: Client: get describe_layout by file handle/path
X-Git-Tag: v0.64~102^2~5
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=ee3d50e61e91aceffc027ed4836a7c526c1e198d;p=ceph.git

Client: get describe_layout by file handle/path

Signed-off-by: Andras Elso <elso.andras@gmail.com>
---

diff --git a/src/client/Client.cc b/src/client/Client.cc
index bed2c450f2f0..a2275c5342d2 100644
--- a/src/client/Client.cc
+++ b/src/client/Client.cc
@@ -7654,7 +7654,23 @@ int Client::ll_release(Fh *fh)
 
 // expose file layouts
 
-int Client::describe_layout(int fd, ceph_file_layout *lp)
+int Client::describe_layout(const char *relpath, ceph_file_layout *lp)
+{
+  Mutex::Locker lock(client_lock);
+
+  filepath path(relpath);
+  Inode *in;
+  int r = path_walk(path, &in);
+  if (r < 0)
+    return r;
+
+  *lp = in->layout;
+
+  ldout(cct, 3) << "describe_layout(" << relpath << ") = 0" << dendl;
+  return 0;
+}
+
+int Client::fdescribe_layout(int fd, ceph_file_layout *lp)
 {
   Mutex::Locker lock(client_lock);
 
@@ -7665,7 +7681,7 @@ int Client::describe_layout(int fd, ceph_file_layout *lp)
 
   *lp = in->layout;
 
-  ldout(cct, 3) << "describe_layout(" << fd << ") = 0" << dendl;
+  ldout(cct, 3) << "fdescribe_layout(" << fd << ") = 0" << dendl;
   return 0;
 }
 
diff --git a/src/client/Client.h b/src/client/Client.h
index 29a5020c6a63..b0bc6e0e1e4c 100644
--- a/src/client/Client.h
+++ b/src/client/Client.h
@@ -670,7 +670,8 @@ public:
   int lazyio_synchronize(int fd, loff_t offset, size_t count);
 
   // expose file layout
-  int describe_layout(int fd, ceph_file_layout* layout);
+  int describe_layout(const char *path, ceph_file_layout* layout);
+  int fdescribe_layout(int fd, ceph_file_layout* layout);
   int get_file_stripe_address(int fd, loff_t offset, vector<entity_addr_t>& address);
   int get_file_extent_osds(int fd, loff_t off, loff_t *len, vector<int>& osds);
   int get_osd_addr(int osd, entity_addr_t& addr);
diff --git a/src/client/SyntheticClient.cc b/src/client/SyntheticClient.cc
index fd2c6e57c3fe..79171da46f1d 100644
--- a/src/client/SyntheticClient.cc
+++ b/src/client/SyntheticClient.cc
@@ -3402,7 +3402,7 @@ int SyntheticClient::chunk_file(string &filename)
   inode_t inode;
   memset(&inode, 0, sizeof(inode));
   inode.ino = st.st_ino;
-  ret = client->describe_layout(fd, &inode.layout);
+  ret = client->fdescribe_layout(fd, &inode.layout);
   if (ret < 0)
     return ret;
 
diff --git a/src/libcephfs.cc b/src/libcephfs.cc
index 9d68715e7816..d0997c8f4cce 100644
--- a/src/libcephfs.cc
+++ b/src/libcephfs.cc
@@ -722,7 +722,7 @@ extern "C" int ceph_get_file_stripe_unit(struct ceph_mount_info *cmount, int fh)
 
   if (!cmount->is_mounted())
     return -ENOTCONN;
-  r = cmount->get_client()->describe_layout(fh, &l);
+  r = cmount->get_client()->fdescribe_layout(fh, &l);
   if (r < 0)
     return r;
   return l.fl_stripe_unit;
@@ -735,7 +735,7 @@ extern "C" int ceph_get_file_pool(struct ceph_mount_info *cmount, int fh)
 
   if (!cmount->is_mounted())
     return -ENOTCONN;
-  r = cmount->get_client()->describe_layout(fh, &l);
+  r = cmount->get_client()->fdescribe_layout(fh, &l);
   if (r < 0)
     return r;
   return l.fl_pg_pool;
@@ -748,7 +748,7 @@ extern "C" int ceph_get_file_pool_name(struct ceph_mount_info *cmount, int fh, c
 
   if (!cmount->is_mounted())
     return -ENOTCONN;
-  r = cmount->get_client()->describe_layout(fh, &l);
+  r = cmount->get_client()->fdescribe_layout(fh, &l);
   if (r < 0)
     return r;
   string name = cmount->get_client()->get_pool_name(l.fl_pg_pool);
@@ -767,7 +767,7 @@ extern "C" int ceph_get_file_replication(struct ceph_mount_info *cmount, int fh)
 
   if (!cmount->is_mounted())
     return -ENOTCONN;
-  r = cmount->get_client()->describe_layout(fh, &l);
+  r = cmount->get_client()->fdescribe_layout(fh, &l);
   if (r < 0)
     return r;
   int rep = cmount->get_client()->get_pool_replication(l.fl_pg_pool);