From mboxrd@z Thu Jan 1 00:00:00 1970 From: jeffs_linux@123mail.org Subject: Re: Why do I get different results for 'mdadm --detail' & 'mdadm --examine' for the same array? Date: Wed, 15 Jun 2011 23:06:04 -0700 Message-ID: <1308204364.18753.1463722377@webmail.messagingengine.com> References: <1307840471.18429.1462140465@webmail.messagingengine.com><20110616101812.761f7397@notabene.brown><1308184754.28723.1463652469@webmail.messagingengine.com><20110616112243.22a20610@notabene.brown><1308188856.14820.1463669409@webmail.messagingengine.com><20110616120049.2f01ce88@notabene.brown> <1308191963.29354.1463681709@webmail.messagingengine.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1308191963.29354.1463681709@webmail.messagingengine.com> Sender: linux-raid-owner@vger.kernel.org To: NeilBrown Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids repeating the process on another box, i just noticed that these two results' UUIDs match exactly, /dev/.mdadm/map /dev/md/0_0 52f5b43c:e83f7e2a:be6ad32e:0536ab0e mdadm --detail --scan /dev/md/0_0 52f5b43c:e83f7e2a:be6ad32e:0536ab0e but the OTHER array's two UUIDs /dev/.mdadm/map /dev/md127 79fb7ad4:289bfae5:86c535ff:202960f2 mdadm --detail --scan /dev/md127 d47afb79:e5fa9b28:ff35c586:f2602920 are 'transforms' of one another; e.g., mdadm --detail --scan /dev/md127 d47afb79:e5fa9b28:ff35c586:f2602920 d4 e5 7a fa fb 9b 79: 28:... | | couplet order transform | d4 e5 7a fa fb 9b 79: 28: ... /dev/.mdadm/map /dev/md127 79fb7ad4:289bfae5:86c535ff:202960f2 what's happening here? that can't be a coincidence. is this a bug? or maybe an artifact of the type of array? jeff