From: Dave Chinner <david@fromorbit.com>
To: Brian Foster <bfoster@redhat.com>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH] xfsrestore: use utimensat() to provide atime/mtime with ns resolution
Date: Fri, 5 Sep 2014 10:45:01 +1000 [thread overview]
Message-ID: <20140905004501.GU20518@dastard> (raw)
In-Reply-To: <1409848708-42666-1-git-send-email-bfoster@redhat.com>
On Thu, Sep 04, 2014 at 12:38:28PM -0400, Brian Foster wrote:
> xfsdump encodes and stores the full atime and mtime for each file with
> nanosecond resolution. xfsrestore uses utime() to set the times of each
> file that is restored. The latter supports resolution of 1 second, thus
> sub-second timestamp data is lost on restore.
That doesn't seem like a big deal. What sort of problems does this
actually cause?
FYI, many linux filesystems only have second resolution timestamps
and hence applications can't rely on sub-second timestamp resolution
to actually mean anything useful....
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
next prev parent reply other threads:[~2014-09-05 0:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-04 16:38 [PATCH] xfsrestore: use utimensat() to provide atime/mtime with ns resolution Brian Foster
2014-09-04 19:47 ` Eric Sandeen
2014-09-04 21:35 ` Brian Foster
2014-09-05 0:45 ` Dave Chinner [this message]
2014-09-05 1:04 ` Eric Sandeen
2014-09-05 1:24 ` Dave Chinner
2014-09-05 11:02 ` Brian Foster
2014-09-05 11:19 ` Greg Freemyer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140905004501.GU20518@dastard \
--to=david@fromorbit.com \
--cc=bfoster@redhat.com \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox