Re: statfs64 missing

[Trond Myklebust <trond.myklebust@fys.uio.no>]

>>>>> " " == Andi Kleen <ak@muc.de> writes:

     > This problem already exists on 2.4. You can actually access NFS
     > servers which have more than 2TB of disk space. NFS uses the
     > local write size as block size. When you are lucky then
     > 0xfffffffff*wsize is bigger than what your NFS server
     > reports. If not you get wrong results.  The only workaround
     > currently is to increase wsize, but that has its limits too.

     > Fixing it properly probably requires statfs64(). Any reason why
     > this was not included in the sector_t patchkit ?

If fixing NFS is the main concern, and we're adding a new syscall,
could someone also add in an equivalent of the Solaris
etc. 'f_frsize'.

Reporting the underlying local filessystem block size can be of use
for some applications. On NFS this value usually differs from the
'optimal transfer block size' aka. f_bsize.

Cheers,
  Trond