Date: Mon, 12 Jul 2010 16:12:39 -0400 From: Patrick Donnelly <batrick@batbytes.com> To: freebsd-stable@freebsd.org Subject: 8.0-Release Writes Go Beyond HD Capacity Message-ID: <AANLkTik5vyuD6w-_7lqaonmD7rvZO9cHIGrmaL2hoEkE@mail.gmail.com>
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Hi List,
I brought a question to the freebsd-questions list [1] about write
problem I was experiencing when writing directly to a hard drive
device. The workflow is:
fd = open("/dev/ad1", O_WRONLY|O_SYNC);
write(fd, buf, BUFSIZ); /* loop until drive full error (write(...) == -1) */
close(fd);
On my box with 8.0 Release, the write loop will constantly return 0
(nothing written) after I reach the end of the hard drive capacity.
After discussion in the earlier linked thread [1] and a look at the
specification [2], I think this may be a bug in the implementation.
Shouldn't write return an error code?
[1] http://lists.freebsd.org/pipermail/freebsd-questions/2010-July/218628.html
[2] http://www.opengroup.org/onlinepubs/000095399/functions/write.html
--
- Patrick Donnelly
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