From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maciej 'Agaran' Pijanka Subject: mdadm, raid10, and problem Date: Sun, 20 May 2007 17:35:35 +0200 Message-ID: <20070520153535.GA563@ep09.pld-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org Cc: neilb@suse.de List-Id: linux-raid.ids Hello i was trying to build raid 10 from six devices (currently loops but need to check before i try to do same on physical drives). and mdadm gets bit mad, mdadm -C -l10 -n6 /dev/loop1 /dev/loop2 /dev/loop3 missing missing missing produced weird result when tried loop missing loop missing loop missing it worked i understand that its logical to give three pairs of devices but content of error wasn't logical in any way mdadm 2.6 [root@develbox /]# mdadm --create /dev/md0 -l10 -n6 -R /dev/loop0 /dev/loop1 /dev/loop2 missing missing missing mdadm: /dev/loop0 appears to be part of a raid array: level=raid10 devices=6 ctime=Sun May 20 17:32:43 2007 mdadm: /dev/loop1 appears to be part of a raid array: level=raid10 devices=6 ctime=Sun May 20 17:32:43 2007 mdadm: /dev/loop2 appears to be part of a raid array: level=raid10 devices=6 ctime=Sun May 20 17:32:43 2007 mdadm: RUN_ARRAY failed: Input/output error mdadm: stopped /dev/md0 [root@develbox /]# -from dmesg: md: bind md: bind md: bind md: md0: raid array is not clean -- starting background reconstruction raid10: not enough operational mirrors for md0 md: pers->run() failed ... md: md0 stopped. md: unbind md: export_rdev(loop2) md: unbind md: export_rdev(loop1) md: unbind md: export_rdev(loop0) [root@develbox /]# ps. am not subscribed, please cc to me best regards maciej pijanka -- agaran at pld dash linux dot org :: PLD Linux Developer [#133161] I do not fear computers. I fear the lack of them. [Isaac Asimov]