From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Burgess Subject: Re: RAID without superblock Date: Sun, 19 Apr 2009 14:57:32 -0700 Message-ID: <1240178252.31728.12.camel@cichlid.com> References: <20090419114743.GA29195@lazy.lzy> <20090419210200.GA6942@lazy.lzy> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090419210200.GA6942@lazy.lzy> Sender: linux-raid-owner@vger.kernel.org To: Piergiorgio Sartor , linux raid mailing list List-Id: linux-raid.ids On Sun, 2009-04-19 at 23:04 +0200, Piergiorgio Sartor wrote: > Ah! I was thinking about it as a method to > build a RAID with an already existing disk > or partition, which cannot be modified. > So, let's say I've already a disk with some > data and I want/need to protect it with a > RAID configuration, but I cannot re-create > the RAID from scratch, because this will > damage the content of the disk. Does the filesystem support shrinking? Maybe you can shrink it a tiny bit and put the superblock at the end. Some sb formats do this. Ext2/3 can be shrunk, xfs not.