Hi Simon, On Wed, 18 May 2011, Simon Tian wrote: > Hi, > > Could any one give me an answer? > > My application need to open one file with two clients in different > hosts. One for write/read and one for read only. The client could be > developed based on libceph or librbd. > I tried librbd, exception appear too. I opened a bug for this, http://tracker.newdream.net/issues/1097. Can you try the patch below? I this may just be something missed in a locking rewrite way back when in a rare code path: Thanks! sage diff --git a/src/client/Client.cc b/src/client/Client.cc index 7f7fb08..bf0997a 100644 --- a/src/client/Client.cc +++ b/src/client/Client.cc @@ -4934,7 +4934,6 @@ public: void Client::sync_write_commit(Inode *in) { - client_lock.Lock(); assert(unsafe_sync_write > 0); unsafe_sync_write--; @@ -4947,8 +4946,6 @@ void Client::sync_write_commit(Inode *in) } put_inode(in); - - client_lock.Unlock(); } int Client::write(int fd, const char *buf, loff_t size, loff_t offset) -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
