From: Andreas Gruenbacher <agruen@suse.de>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: Valerie Aurora <vaurora@redhat.com>,
linuxram@us.ibm.com, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, neilb@suse.de,
viro@zeniv.linux.org.uk
Subject: Re: [PATCH 6/7 v3] overlay: hybrid overlay filesystem prototype
Date: Mon, 27 Sep 2010 13:49:48 +0200 [thread overview]
Message-ID: <201009271349.49077.agruen@suse.de> (raw)
In-Reply-To: <E1P08oT-0004C7-3O@pomaz-ex.szeredi.hu>
On Monday 27 September 2010 10:11:53 Miklos Szeredi wrote:
> [...] marking new directories opaque is only a half solution.
> E.g. consider the case when we have /a/b/c/ on the lower fs
> and /a/b/ on the upper, which is not opaque. Then /a/b/c/ is created
> on the upper fs off-line. The union logic can't notice that "c"
> should really be opaque and will merge with the contents of the lower
> layer.
I can think of arguments for either behavior, perhaps with a slight preference
for your suggestion (default = opaque).
In any case, admins will need a way to flip opaque flags and remove undesired
whiteouts.
Thanks,
Andreas
next prev parent reply other threads:[~2010-09-27 11:49 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-20 18:04 [PATCH 0/7 v3] overlay filesystem prototype Miklos Szeredi
2010-09-20 18:04 ` [PATCH 1/7 v3] vfs: implement open "forwarding" Miklos Szeredi
2010-09-20 18:04 ` [PATCH 2/7 v3] vfs: make i_op->permission take a dentry instead of an inode Miklos Szeredi
2010-09-20 18:04 ` [PATCH 3/7 v3] vfs: add flag to allow rename to same inode Miklos Szeredi
2010-09-23 22:04 ` Valerie Aurora
2010-09-20 18:04 ` [PATCH 4/7 v3] vfs: export do_splice_direct() to modules Miklos Szeredi
2010-09-20 18:04 ` [PATCH 5/7 v3] vfs: fix possible use after free in finish_open() Miklos Szeredi
2010-09-23 20:19 ` Valerie Aurora
2010-09-20 18:04 ` [PATCH 6/7 v3] overlay: hybrid overlay filesystem prototype Miklos Szeredi
2010-09-22 23:21 ` Valerie Aurora
2010-09-24 14:33 ` Jens Axboe
2010-09-24 17:16 ` Valerie Aurora
2010-09-24 17:56 ` Valerie Aurora
2010-09-27 8:11 ` Miklos Szeredi
2010-09-27 11:49 ` Andreas Gruenbacher [this message]
2010-09-27 12:15 ` J. R. Okajima
2010-09-27 18:47 ` Valerie Aurora
2010-09-28 8:24 ` Andreas Gruenbacher
2010-09-30 21:51 ` Valerie Aurora
2010-10-01 9:34 ` Andreas Gruenbacher
2010-10-06 17:31 ` Valerie Aurora
2010-10-11 9:41 ` Michal Suchanek
2010-10-11 13:51 ` Scott James Remnant
2010-09-20 18:04 ` [PATCH 7/7 v3] overlay: overlay filesystem documentation Miklos Szeredi
2010-09-21 1:31 ` [PATCH 0/7 v3] overlay filesystem prototype Neil Brown
2010-09-22 9:50 ` Miklos Szeredi
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