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From: NORM%IONAACAD.BITNET@tecmtyvm.mty.itesm.mx ( Norman Walsh)
Newsgroups: comp.lang.pascal
Subject: TP BlockWrite problem?
Message-ID: <26033@adm.brl.mil>
Date: 15 Feb 91 18:08:19 GMT
Sender: news@adm.brl.mil
Lines: 23

Has anyone ever had any difficulties with the builtin BlockWrite
function?  Occasionally, Blockwrite fails.  I have been tentative
about posting this question because I can't believe that the problem
is in Blockwrite.  What has lead me to post it is that the problem
has now occured twice.  In two different programs written by
different developers that do entirely different things.

In both cases the block write indicates that 0 bytes where written
when there is no reason that I can think of for the write to fail.
There is certainly enough disk space, it's in a small loop, and
the file has been written to several times before (i.e. it isn't the
first time through the loop that fails).

Leads: -It seems to happen on the last write to the file (the last
        block).
       -It seems to happen only when there is a small amount of disk
        space free (less than a meg or so?  2M? 3M?)

One program is copying a file (appending) and the other is writing
a file to disk from packets coming across the network.

                                            Any ideas?
                                              ndw