Curtis Doty wrote: > I'm horsing around with ext4 again. This time on Fedora 10. Is there any > sane reason why I cannot use the *full* 16TiB volume? > > ----8<---- > # vgcreate foo /dev/mapper/mpath* > Volume group "foo" successfully created > # lvcreate -L16T -nbar foo > Logical volume "bar" created > # mkfs.ext4 -Tlargefile4 /dev/foo/bar > mke2fs 1.41.3 (12-Oct-2008) > mkfs.ext4: Size of device /dev/foo/bar too big to be expressed in 32 bits > using a blocksize of 4096. > ----8<---- > > But it appears to *really* allow up to one PE less than the full 16TiB, > why? The real limit, IIRC, is (2^32 - 1) blocks, or 4k shy of 16T for 4k blocks. This is a little unfortunate since "lvcreate -L16T" is so handy, but it won't mkfs properly. (ext3 should have the same limitation). We should probably make mkfs just silently lop off one block if it encounters a boundary condition like this ... -Eric _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
