hi,all we do test about "rm directories" repeatedly, and the result confused us a lot. build ceph v0.30 on linux-2.6.37 folllow below steps: $ mount -t ceph 192.168.0.11:/ /mnt $ mkdir /mnt/a $ cd /mnt $ rm -rf a from the kernel client debug log, in the process "readdir a", we can't read directory "a" in client's cache, trace to soruce code , we find "(ci->i_ceph_flags & CEPH_I_COMPLETE)" is false, so client can't do "__dcache_readdir" function(Dir.c line 262),which was used to read data from cache. so client sends a request to MDS to get infomation of dir "a", that consumes much time, we can not tolerate if it needs 10s to remove 10 dirs. we are not clear that why client can't read dir "a" from it local cache?
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