MIDRANGE dot COM Mailing List Archive



Home » MIDRANGE-L » May 2014

RE: IFS file Created, Accessed and Changed info



fixed

Thanks again, for your follow-up and extra detail

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of John Yeung
Sent: Thursday, May 29, 2014 10:33 AM
To: Midrange Systems Technical Discussion
Subject: Re: IFS file Created, Accessed and Changed info

Responding to my own post:

On Thu, May 29, 2014 at 12:11 PM, John Yeung <gallium.arsenide@xxxxxxxxx> wrote:

[TechRepublic:]
"The major difference is in the resolution time, which can vary from
10 milliseconds for 'create time' on FAT-formatted files to one hour
for 'access time' on NTFS-formatted files."

This is an amazingly awkward and uninformative statement. What about
the "access time" on FAT or the "create time" on NTFS, or the "change
time" on either? In any case, the one hour seems kind of
preposterous. Even the screen shots in that very article strongly
suggest that the access time has resolution no worse than one second.

I think the resolution on all three times are the same for any given
filesystem. I could be wrong, but it just seems like a ridiculous
idea to make some timestamps have finer resolution than others.

Well, according to the Python documentation (regarding its wrapper for the "stat" system call), Windows FAT filesystems have 2-second resolution on modification time and 1-day (yes, day!) resolution on access time.

So I was definitely wrong. I stand by the assessment that this is ridiculous, and I am still not completely confident about the correctness of the TechRepublic article. However, here's a link from Microsoft, which presumably is as authoritative as we have easy access
to:

http://msdn.microsoft.com/en-us/library/windows/desktop/ms724290%28v=vs.85%29.aspx

John Y.
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.






Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2014 by MIDRANGE dot COM and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available here. If you have questions about this, please contact