From: "Rohit Sharma" Subject: Re: Copying Data Blocks Date: Tue, 6 Jan 2009 22:15:33 +0530 Message-ID: <2d08ef090901060845t85ac2b0i11c684a09d930608@mail.gmail.com> References: <2d08ef090901060236p46d4d396x797e4bceb24a2a34@mail.gmail.com> <5feb302e0901060612p4e114953pb6e297778aa7c0a4@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "Manish Katiyar" , ext4 , Kernelnewbies To: "rishi agrawal" Return-path: Received: from rn-out-0910.google.com ([64.233.170.190]:41451 "EHLO rn-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750846AbZAFQpe (ORCPT ); Tue, 6 Jan 2009 11:45:34 -0500 Received: by rn-out-0910.google.com with SMTP id k40so5399664rnd.17 for ; Tue, 06 Jan 2009 08:45:33 -0800 (PST) In-Reply-To: <5feb302e0901060612p4e114953pb6e297778aa7c0a4@mail.gmail.com> Content-Disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: On Tue, Jan 6, 2009 at 7:42 PM, rishi agrawal wrote: > yes i suppose the donor inode is known > moreover the receiver inode's number is also known > > On Tue, Jan 6, 2009 at 6:54 PM, Manish Katiyar wrote: >> >> On Tue, Jan 6, 2009 at 4:06 PM, Rohit Sharma wrote: >> > I want to read data blocks from one inode >> > and copy it to other inode. >> > >> > I mean to copy data from data blocks associated with one inode >> > to the data blocks associated with other inode. >> >> Copying 4K chunk of data itself is a costly operation. and depending Yes its a costly operation, but if this can be done then we can definitely copy n blocks at a time. >> on the size of your donor inode this can be huge . Why do you want to >> do that ? Do you know the inode of the donor inode ? For physically relocating a file from one disk to other. Yes Manish, i know the donor inode and i will create the reciever inode. Can we do that in kernel space.? >> >> thanks - >> Manish >> > >> > Is that possible in kernel space.? >> > -- >> > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in >> > the body of a message to majordomo@vger.kernel.org >> > More majordomo info at http://vger.kernel.org/majordomo-info.html >> > >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > Regards, > Rishi B. Agrawal > >