Re: An nfs question ftruncate vs. pwrite

[Peter Staubach]

Kenny Simpson wrote:

> When a file that is opened with normal flags (O_RDWR|O_CREAT|O_TRUNC|O_LARGEFILE) is on NFS, and
> it is exteded via ftruncate, the new expty pages get read back from the server before the system
> call returns:
>  (from strace -T):
> ftruncate64(3, 41943040)                = 0 <0.063866>

Is there a question in there?

If the question is whether the new empty pages get read in from the
server before the ftruncate system call returns, then no, they do not.
They get read in from the server as required in the normal course of
future operations.

   Thanx...

      ps
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