Ceph

ceph version: 0.80.6
platform : Redhat 6.5
Host: 3
osd node: 15 (5 per host)

operator:
1 start the ceph cluster;
2 shutdown a host;
3 after one day, restart the host;
4. the osd start , but entry up state, and all osd's cpu 100%;

then , gdb attach to osd, I find the FileStore::lfn_open return error.
int FileStore::lfn_open(coll_t cid,
const ghobject_t& oid,
bool create,
FDRef *outfd,
IndexedPath *path,
Index *index) {
....

r = (*index)->lookup(oid, path, &exist);
    if (r < 0) {
      derr << "could not find " << oid << " in index: " 
       << cpp_strerror(-r) << dendl;
      goto fail;
    }

r = ::open((*path)->path(), flags, 0644);

the ::open function return -1;

then I print path, I can find the path is:
(gdb) p *(CollectionIndex::Path *) 0x7f881c844160
$6 = {
full_path = "/ceph-data/ceph-1/current/meta/DIR_5/osdmap.168__0_AC977195__none",
parent_ref = std::tr1::shared_ptr (count 2) 0x7f881c8464a0,
parent_coll = { static META_COLL = {
static META_COLL = <same as static member of an already seen type>,
str="meta"
},
str = "meta"
}
}

but I list the "/ceph-data/ceph-1/current/meta/DIR_5/" , can't find the file:

[root@sandstone0002 DIR_5]# ll osdmap*
rw-r--r- 1 sdsadmin sdsadmin 17490 Nov 8 17:34 osdmap.883__0_AC94C795__none