Levi Pearson wrote: > On Tue, Aug 10, 2010 at 6:03 PM, Mike Lovell <[email protected]> wrote: > >> i'm working on a program that uses a statvfs call to check the space >> free, space used, and total space on a filesystem. when looking through >> the docs for statvfs, i see that there is f_bsize and f_frsize that >> define block size and 'fundamental file system block size' or fragment >> size. it also has f_blocks which is the number of f_frsize units in the >> file system. i'm wondering about the f_bfree and f_bavail numbers >> though. are these supposed to be in terms of f_bsize or f_frsize? since >> its talking about blocks with these items and some of the docs refer to >> f_frsize as fragment size, i'm guessing that they are in terms of >> f_bsize. but it doesn't seem all that clear to me. anyone know for sure >> what this is supposed to be? thanks. >> > > The f_frsize value is the actual minimum allocation unit of the > filesystem, while the f_bsize is the block size that would lead to > most efficient use of the disk with io calls. All of the block counts > are in terms of f_frsize, since it is the actual allocation unit size. > The BSD manpages are a bit more informative on this function than the > POSIX ones. > awesome. thanks for the info.
mike /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
