From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dennison Williams Subject: The effects of multiple layers of block drivers Date: Thu, 10 Jan 2008 14:58:49 -0800 Message-ID: <4786A329.90702@2inches.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hello, I am starting to dig into the Block subsystem to try and uncover the reason for some data I lost recently. My situation is that I have multiple block drivers on top of each other and am wondering how the effectss of a raid 5 rebuild would affect the block devices above it. The layers are raid 5 -> lvm -> cryptoloop. It seems that after the raid 5 device was rebuilt by adding in a new disk, that the cryptoloop doesn't have a valid ext3 partition on it. As a raid device re-builds is there ant rearranging of sectors or corresponding blocks that would effect another block device on top of it? Sincerely, Dennison Williams