linux-ext4 - Re: [PATCH v2 0/4] quota: add project quota support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1407703644.8477.1.camel@jarvis.lan>
Date:	Sun, 10 Aug 2014 13:47:24 -0700
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Theodore Ts'o <tytso@....edu>
Cc:	Li Xi <pkuelelixi@...il.com>, linux-fsdevel@...r.kernel.org,
	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	viro@...iv.linux.org.uk, hch@...radead.org,
	Jan Kara <jack@...e.cz>, Andreas Dilger <adilger@...ger.ca>,
	"Niu, Yawei" <yawei.niu@...el.com>
Subject: Re: [PATCH v2 0/4] quota: add project quota support


On Sat, 2014-08-09 at 13:24 -0400, Theodore Ts'o wrote:
> The last time I asked why in the world anyone would want to use this
> feature, the only use case that I heard was people who were using
> containers, and where the all of the project id's were inside a
> chroot.  Hence, any questions I asked about what happens when a file
> gets moved out from the hierarchy were hand-waved away, since inside a
> chroot, it could never happen.

Actually, I don't believe that's entirely accurate.  The performance
problem with shared filesystem roots for containers has meant OpenVZ has
been using a block root for a while.  However, we still support the old
shared filesystem root, but for quota's within the chroot, we use a subtree
quota system (not a project quota) for which Dmitry Monakhov
posted the patches several times a couple of years ago.

James


--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html