That is a VERITAS file system

In VxFS 1 block = 512 bytes in VERITAS (my memory deceives me at times..please verify)
What that message means "probably" is that the disk is full and its FS has a block size of 1 (if u set it at a block size of 64 bytes, i bet the fs size will come down but the disk will start crawling)

BTW, i have seen this error with one of my SUN box and i remember the disk went bad soon - call up VERITAS asap they will know better than i do

~s4g3