Jeff Vian wrote:
Exactly, and IIRC the filesystem knows that if it needs X amount of space for a file, then Y number of inodes are marked for use for that file at the beginning. Thus space allocated is as contiguous as is efficient for read/write on the disk.
If "the filesystem knows that if it needs X amount of space for a file," that implies there's a way of telling it that.
How's that done? I don't recall any system call for *x (there is one for OS/2), and one could do it in JCL in IBM's OS in the 60s), but in the *x world I've never seen a way to do it.
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