From: "J. R. Okajima" <hooanon05@yahoo.co.jp>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: Alessandro Pignotti <alexpigna.dev@gmail.com>,
Linux-Fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: [Patch] Support overriding uid/gid in overlayfs
Date: Fri, 01 Feb 2013 13:45:34 +0900 [thread overview]
Message-ID: <7500.1359693934@jrobl> (raw)
In-Reply-To: <CAJfpegt4=BBXM4rGzT6WqSZUhn8vLjbFU0mPHUSkysL9_VQTWA@mail.gmail.com>
Miklos Szeredi:
> They don't "solve" this, it's a fundamental property of the
> implementation. Overlayfs and union-mounts behave as if copy-up was a
> "bind mount" over the file in question. Yes, it's a namespace trick
> but it seems to work in most situations.
It must be a sad news for overlayfs users who have every met "non-most"
situations.
> The point was that uid/gid was to be overridden with *different*
> values for each overlayfs instance. So implementing uid/gid
> overriding in the lower fs doesn't help.
For the scenario which Alessandro Pignotti posted,
- everything on the lower fs are owned by a single user, by the
overriding feature.
- everything on the upper fs are owned by the user natively.
Isn't it enough?
J. R. Okajima
prev parent reply other threads:[~2013-02-01 4:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1358254695.3380.16.camel@avalon>
2013-01-25 11:08 ` [Patch] Support overriding uid/gid in overlayfs Miklos Szeredi
2013-01-28 15:58 ` Alessandro Pignotti
2013-01-31 16:15 ` Miklos Szeredi
2013-01-31 17:01 ` J. R. Okajima
2013-01-31 17:40 ` Miklos Szeredi
2013-02-01 4:45 ` J. R. Okajima [this message]
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