Number of blocks and size of blocks VXFS

[Daniel Fourie]

Hi

I would like to know how to get the block size and the number of blocks from a filesystem.

Regards

[javedk · Accepted solution]

u could try
fstyp -v /dev/vgXX/rlvolX

[A. Clay Stephenson]

... and I'll bet that you are concerned about blocksize because you learned in Oracle class that is VERY IMPORTANT to match the filesystem blocksize (or some multiple thereof) to the database blocksize. With respect to vxfs filesystems (unlike hfs, s5,or ufs filesystems which are block-based) the correct answer is "big woo". Vxfs filesystems always try to do i/o in big chunks (extents) and the filesystem blocksize doesn't matter at all. In fact, the tiny, 1KiB block is just fine because its only significance is the smallest unit of filesize allocation rather than the control of i/o chunk size.