Robert Nichols wrote: > Filipe Brandenburger wrote: >> Found it! It's not related to CentOS 4 or 5 (I found a C4 machine in >> which small files took 8kb of diskspace and a C5 machine in which >> small files took 4kb). It's related to SELinux being enabled or not. >> Casually most of my C4 machines had SELinux disabled and most of my C5 >> have it enabled. Now I dug out some machines with the opposite config >> and I checked it out. >> >> I believe if SELinux is enabled, it will use extended attributes to >> store the file's SELinux context (you can see it with "ls -Z", for >> some reason you cannot see it with "getfattr -d", I was expecting that >> to be possible). I guess when the file has extended attributes it will >> use an additional block to store them. That basically doubles the >> storage requirements if you have millions of tiny files... > > It shouldn't be doing that. In any case, I can confirm that selinux is disabled on the x86_64 C5 box where I tested yesterday and reported 4kb usage. And I see the same on another similar box (4kb file, selinux disabled on x86_64 C5).