Ηι, I was looking at the source code of the ceph MDS and in particular at the function CInode* Server::prepare_new_inode(...) in the mds/Server.cc file which creates a new inode. At lines 1739-1747 the code checks if the parent directory has the set-group-ID bit set. If this bit is set and the new inode refers to a directory then the new inode should also have the set-group-ID bit set. However, as I understand, at line 1744 the set-group-ID bit is set at the local variable [mode |= S_ISGID] and not on the inode. Shouldn't this line be [in->inode.mode |= S_ISGID;]? To illustrate the above problem I tried to create a new directory inside a directory that has the set-group-ID bit set: root@client-admin:/mnt/admin# mkdir mydir root@client-admin:/mnt/admin# chmod +s mydir root@client-admin:/mnt/admin# ls -l total 1 drwsr-sr-x 1 root root 0 Nov 22 2012 mydir -rw-r--r-- 1 root root 13 Oct 19 08:05 myfile.txt root@client-admin:/mnt/admin# cd mydir root@client-admin:/mnt/admin/mydir# mkdir newdir root@client-admin:/mnt/admin/mydir# ls -l total 1 drwxr-xr-x 1 root root 0 Nov 22 2012 newdir Finally, I would like to note that I am using Ceph 0.48.2 but the above problem also seems to exist in the v0.54 development release. Best regards, Girogos Kappes ----------------------------------------------------------- Giorgos Kappes Website: http://www.cs.uoi.gr/~gkappes email: geokapp@xxxxxxxxx -- 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