From: NeilBrown <neilb@suse.de>
To: Jan Engelhardt <jengelh@inai.de>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
viro@ZenIV.linux.org.uk, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, hch@infradead.org,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
apw@canonical.com, nbd@openwrt.org, hramrach@centrum.cz,
jordipujolp@gmail.com, ezk@fsl.cs.sunysb.edu,
ricwheeler@gmail.com, dhowells@redhat.com, hpj@urpla.net,
sedat.dilek@googlemail.com, penberg@kernel.org,
goran.cetusic@gmail.com, romain@orebokech.com, mszeredi@suse.cz
Subject: Re: [PATCH 07/13] overlay: overlay filesystem documentation
Date: Mon, 10 Sep 2012 13:18:02 +1000 [thread overview]
Message-ID: <20120910131802.157d6a35@notabene.brown> (raw)
In-Reply-To: <alpine.LNX.2.01.1209100333290.22738@frira.zrqbmnf.qr>
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On Mon, 10 Sep 2012 03:47:04 +0200 (CEST) Jan Engelhardt <jengelh@inai.de>
wrote:
>
> On Wednesday 2012-08-15 17:48, Miklos Szeredi wrote:
> >[...]
> >+This is most obvious from the 'st_dev' field returned by stat(2).
> >+
> >+While directories will report an st_dev from the overlay-filesystem,
> >+all non-directory objects will report an st_dev from the lower or
> >+upper filesystem that is providing the object.
>
> That would seem to render `rsync --one-filesystem` unusable?
> (or similar options in other tools)
>
Would it? Have you tested? or examine source code? or just guessed?
I quick look at rsync and du suggest that you only consider --one-file-system
when looking at a directory - they assume files are in the same filesystem as
their parent.
I cannot promise that everything would work exactly as expected, but I
suspect most things will..... though that might depend on your expectations.
NeilBrown
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next prev parent reply other threads:[~2012-09-10 3:18 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-15 15:48 [PATCH 00/13] overlay filesystem: request for inclusion (v14) Miklos Szeredi
2012-08-15 15:48 ` [PATCH 01/13] vfs: add i_op->open() Miklos Szeredi
2012-08-15 17:21 ` J. Bruce Fields
2012-08-15 20:28 ` NeilBrown
2012-08-16 10:10 ` Miklos Szeredi
2012-08-15 15:48 ` [PATCH 02/13] vfs: export do_splice_direct() to modules Miklos Szeredi
2012-08-15 15:48 ` [PATCH 03/13] vfs: introduce clone_private_mount() Miklos Szeredi
2012-08-15 15:48 ` [PATCH 04/13] overlay filesystem Miklos Szeredi
2012-08-16 6:24 ` Eric W. Biederman
2012-08-16 10:25 ` Miklos Szeredi
2012-08-15 15:48 ` [PATCH 05/13] overlayfs: add statfs support Miklos Szeredi
2012-08-17 18:20 ` Ben Hutchings
2012-08-29 22:48 ` Miklos Szeredi
2012-08-30 5:54 ` Ben Hutchings
2012-08-31 12:47 ` J. R. Okajima
2012-08-15 15:48 ` [PATCH 06/13] overlayfs: implement show_options Miklos Szeredi
2012-08-15 15:48 ` [PATCH 07/13] overlay: overlay filesystem documentation Miklos Szeredi
2012-08-15 19:53 ` J. Bruce Fields
2012-08-16 10:09 ` Miklos Szeredi
2012-09-10 1:47 ` Jan Engelhardt
2012-09-10 3:18 ` NeilBrown [this message]
2012-08-15 15:48 ` [PATCH 08/13] fs: limit filesystem stacking depth Miklos Szeredi
2012-08-16 8:02 ` Sedat Dilek
2012-08-16 8:30 ` Sedat Dilek
2012-08-16 10:42 ` Miklos Szeredi
2012-08-16 13:24 ` Sedat Dilek
2012-09-03 15:05 ` Miklos Szeredi
2012-08-15 15:48 ` [PATCH 09/13] overlayfs: fix possible leak in ovl_new_inode Miklos Szeredi
2012-08-15 15:48 ` [PATCH 10/13] overlayfs: create new inode in ovl_link Miklos Szeredi
2012-08-15 15:48 ` [PATCH 11/13] vfs: export __inode_permission() to modules Miklos Szeredi
2012-08-15 17:17 ` Sedat Dilek
2012-08-15 15:48 ` [PATCH 12/13] ovl: switch to __inode_permission() Miklos Szeredi
2012-08-15 16:59 ` Casey Schaufler
2012-08-15 17:07 ` Andy Whitcroft
2012-08-15 17:34 ` Casey Schaufler
2012-08-15 15:48 ` [PATCH 13/13] overlayfs: copy up i_uid/i_gid from the underlying inode Miklos Szeredi
2012-08-15 17:14 ` [PATCH 00/13] overlay filesystem: request for inclusion (v14) Sedat Dilek
-- strict thread matches above, loose matches on Subject: below --
2012-09-20 18:55 [PATCH 00/13] overlay filesystem: request for inclusion (v15) Miklos Szeredi
2012-09-20 18:55 ` [PATCH 07/13] overlay: overlay filesystem documentation Miklos Szeredi
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