From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ted Ts'o Subject: Re: [PATCH 2/3] ext4: Implement subtree ID support for ext4 filesystem Date: Wed, 11 Jul 2012 13:17:10 -0400 Message-ID: <20120711171710.GA8073@thunk.org> References: <1341847725-26114-1-git-send-email-dmonakhov@openvz.org> <1341847725-26114-3-git-send-email-dmonakhov@openvz.org> <20120709210439.GB11960@thunk.org> <874npefo7n.fsf@dmbot.sw.ru> <20120711132429.GA10872@thunk.org> <87vchue2u6.fsf@dmbot.sw.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, jack@suse.cz To: Dmitry Monakhov Return-path: Content-Disposition: inline In-Reply-To: <87vchue2u6.fsf@dmbot.sw.ru> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Wed, Jul 11, 2012 at 07:26:25PM +0400, Dmitry Monakhov wrote: > Yes this looks reasonable, the only thing that we should aware of is id > collision. We have to reserve pool numbers to quota group id's. > This can be easily solved by changing disk structure of quota-file > to use u64 on uid. How many pool id's are you anticipating? Is 32-bits really not enough? I'll note that uid_t and gid_t is only 32-bits today, and part of my goal is to try to preserve compatibility with the existing quota infrastructure. - Ted