Pavel Kostyuk, of SWSoft, posted the following information in the SWSoft forums(thread).
It is summarized here for your benefit. Basically, when Virtuozzo is installed on Linux,
the following options are used to format the VZ partition:
# mke2fs -i 1024 -b 1024 -j /dev/device
That is a block-size of 1024 bytes, with 1024 bytes per inode. This gives the most optimal
relation of blocks to inodes for a VPS installation.