linux-kernel - Re: [PATCH v2] fs/ceph/quota: ignore quota with CAP_SYS

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Message-ID: <CA+2bHPb+_=1NQQ2RaTzNy155c6+ng+sjbE6-di2-4mqgOK7ysg@mail.gmail.com>
Date: Wed, 11 Sep 2024 11:01:18 -0400
From: Patrick Donnelly <pdonnell@...hat.com>
To: Max Kellermann <max.kellermann@...os.com>
Cc: xiubli@...hat.com, idryomov@...il.com, ceph-devel@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] fs/ceph/quota: ignore quota with CAP_SYS_RESOURCE

On Wed, Sep 11, 2024 at 10:25 AM Max Kellermann
<max.kellermann@...os.com> wrote:
>
> CAP_SYS_RESOURCE allows users to "override disk quota limits".  Most
> filesystems have a CAP_SYS_RESOURCE check in all quota check code
> paths, but Ceph currently does not.  This patch implements the
> feature.

Just because the client cooperatively maintains the quota limits with
the MDS does not mean it can override the quota in a distributed
system.

NAK

-- 
Patrick Donnelly, Ph.D.
He / Him / His
Red Hat Partner Engineer
IBM, Inc.
GPG: 19F28A586F808C2402351B93C3301A3E258DD79D