Re: [ANNOUNCE] Ext3 vs Reiserfs benchmarks

[Matthias Andree]

On Mon, 15 Jul 2002, Thunder from the hill wrote:

> Hi,
> 
> On 15 Jul 2002, Patrick J. LoPresti wrote:
> > Note that this means writing a truly reliable shell or Perl script is
> > tricky.  I suppose you can "use POSIX qw(fsync);" in Perl.  But what do
> > you do for a shell script?  /bin/sync :-) ?
> 
> Write a binary (/usr/bin/fsync) which opens a fd, fsync it, close it, be 
> done with it.

Or steal one from FreeBSD (written by Paul Saab), fix the err() function
and be done with it.

.../usr.bin/fsync/fsync.{1,c}

Interesting side note -- mind the O_RDONLY:

        for (i = 1; i < argc; ++i) {
                if ((fd = open(argv[i], O_RDONLY)) < 0)
                        err(1, "open %s", argv[i]);

                if (fsync(fd) != 0)
                        err(1, "fsync %s", argv[1]);
                close(fd);
        }