From: Theodore Ts'o <tytso@mit.edu>
To: "J. Bruce Fields" <bfields@fieldses.org>
Cc: linux-ext4@vger.kernel.org, sandeen@redhat.com,
Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>,
gluster-devel@nongnu.org
Subject: Re: regressions due to 64-bit ext4 directory cookies
Date: Wed, 13 Feb 2013 10:14:55 -0500 [thread overview]
Message-ID: <20130213151455.GB17431@thunk.org> (raw)
In-Reply-To: <20130213133131.GE14195@fieldses.org>
On Wed, Feb 13, 2013 at 08:31:31AM -0500, J. Bruce Fields wrote:
> They're assuming they can take the high bits of the cookie for their own
> use.
>
> (In more detail: they're spreading a single directory across multiple
> nodes, and encoding a node ID into the cookie they return, so they can
> tell which node the cookie came from when they get it back.)
>
> That works if you assume the cookie is an "offset" bounded above by some
> measure of the directory size, hence unlikely to ever use the high
> bits....
Right, but why wouldn't a nfs export option solave the problem for
gluster?
Basically, it would be nice if we did not have to degrade locally
running userspace applications by globally turning off 64-bit telldir
cookies just because there are some broken cluster file systems and
nfsv3 clients out there. And if we are only turning off 64-bit
cookies for NFS, wouldn't it make sense to make this be a NFS export
option, as opposed to a mount option?
Regards,
- Ted
next prev parent reply other threads:[~2013-02-13 15:15 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-12 20:28 regressions due to 64-bit ext4 directory cookies J. Bruce Fields
2013-02-12 20:56 ` Bernd Schubert
2013-02-12 21:00 ` J. Bruce Fields
2013-02-13 8:17 ` Bernd Schubert
2013-02-13 22:18 ` J. Bruce Fields
2013-02-13 13:31 ` [Gluster-devel] " Niels de Vos
2013-02-13 15:40 ` Bernd Schubert
2013-02-14 5:32 ` Dave Chinner
2013-02-13 4:00 ` Theodore Ts'o
2013-02-13 13:31 ` J. Bruce Fields
2013-02-13 15:14 ` Theodore Ts'o [this message]
2013-02-13 15:19 ` J. Bruce Fields
2013-02-13 15:36 ` Theodore Ts'o
[not found] ` <20130213153654.GC17431-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2013-02-13 16:20 ` J. Bruce Fields
2013-02-13 16:20 ` J. Bruce Fields
[not found] ` <20130213162059.GL14195-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2013-02-13 16:43 ` Myklebust, Trond
2013-02-13 16:43 ` Myklebust, Trond
2013-02-13 21:33 ` J. Bruce Fields
2013-02-14 3:59 ` Myklebust, Trond
[not found] ` <4FA345DA4F4AE44899BD2B03EEEC2FA91F3D6BAB-UCI0kNdgLrHLJmV3vhxcH3OR4cbS7gtM96Bgd4bDwmQ@public.gmane.org>
2013-02-14 5:45 ` Dave Chinner
2013-02-14 5:45 ` Dave Chinner
2013-02-13 21:21 ` Anand Avati
2013-02-13 21:21 ` Anand Avati
[not found] ` <CAFboF2wXvP+vttiff8iRE9rAgvV8UWGbFprgVp8p7kE43TU=PA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-02-13 22:20 ` [Gluster-devel] " Theodore Ts'o
2013-02-13 22:20 ` Theodore Ts'o
2013-02-13 22:41 ` J. Bruce Fields
[not found] ` <20130213224141.GU14195-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2013-02-13 22:47 ` Theodore Ts'o
2013-02-13 22:47 ` Theodore Ts'o
[not found] ` <20130213224720.GE5938-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2013-02-13 22:57 ` Anand Avati
2013-02-13 22:57 ` Anand Avati
[not found] ` <CAFboF2z1akN_edrY_fT915xfehfHGioA2M=PSHv0Fp3rD-5v5A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-02-13 23:05 ` [Gluster-devel] " J. Bruce Fields
2013-02-13 23:05 ` J. Bruce Fields
[not found] ` <20130213230511.GW14195-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2013-02-13 23:44 ` Theodore Ts'o
2013-02-13 23:44 ` Theodore Ts'o
[not found] ` <20130213234430.GF5938-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2013-02-14 0:05 ` Anand Avati
2013-02-14 0:05 ` Anand Avati
[not found] ` <CAFboF2zS+YAa0uUxMFUAbqgPh3Kb4xZu40WUjLyGn8qPoP+Oyw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-02-14 21:47 ` [Gluster-devel] " J. Bruce Fields
2013-02-14 21:47 ` J. Bruce Fields
2013-03-26 15:23 ` Bernd Schubert
2013-03-26 15:23 ` [Gluster-devel] " Bernd Schubert
[not found] ` <5151BD5F.30607-mPn0NPGs4xGatNDF+KUbs4QuADTiUCJX@public.gmane.org>
2013-03-26 15:48 ` Eric Sandeen
2013-03-26 15:48 ` Eric Sandeen
2013-03-28 14:07 ` Theodore Ts'o
2013-03-28 16:26 ` Eric Sandeen
2013-03-28 17:52 ` Zach Brown
[not found] ` <20130328175205.GD16651-fypN+1c5dIyjpB87vu3CluTW4wlIGRCZ@public.gmane.org>
2013-03-28 18:05 ` Anand Avati
2013-03-28 18:05 ` Anand Avati
[not found] ` <CAFboF2ztc06G00z8ga35NrxgnT2YgBiDECgU_9kvVA_Go1_Bww-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-03-28 18:31 ` [Gluster-devel] " J. Bruce Fields
2013-03-28 18:31 ` J. Bruce Fields
[not found] ` <20130328183153.GG7080-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org>
2013-03-28 18:49 ` Anand Avati
2013-03-28 18:49 ` Anand Avati
[not found] ` <CAFboF2w49Lc0vM0SerbJfL9_RuSHgEU+y_Yk7F4pLxeiqu+KRg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-03-28 19:43 ` [Gluster-devel] " Jeff Darcy
2013-03-28 19:43 ` Jeff Darcy
[not found] ` <51549D74.1060703-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-03-28 22:14 ` Anand Avati
2013-03-28 22:14 ` Anand Avati
[not found] ` <CAFboF2xkvXx9YFYxBXupwg=s=3MaeQYm2KK2m8MFtEBPsxwQ7Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-03-28 22:20 ` Anand Avati
2013-03-28 22:20 ` Anand Avati
2013-02-14 21:46 ` [Gluster-devel] " J. Bruce Fields
2013-02-14 21:46 ` J. Bruce Fields
[not found] ` <20130213222052.GD5938-AKGzg7BKzIDYtjvyW6yDsg@public.gmane.org>
2013-02-14 6:10 ` Dave Chinner
2013-02-14 6:10 ` Dave Chinner
2013-02-14 22:01 ` J. Bruce Fields
2013-02-15 2:27 ` Dave Chinner
2013-02-13 6:56 ` Andreas Dilger
2013-02-13 13:40 ` J. Bruce Fields
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