On Mon, 19 Aug 2013 07:48:20 +0000 <Matthias.Blaesing@xxxxxxxxxx> wrote: > Hey, > > Strange. I would definitely have expected one of those to start the > > recovery. > > Does anything appear in the kernel logs (e.g. output of 'dmesg')? > > Please see the attaches boot.msg - from my perspective it only confirms the results > gained from the /proc/mdstat and mdadm output. I guess I should have been more explicit. It looks like you have just attached a log of what happened at boot. I mean does anything appear in the dmesg output when you try to add the spare device to the array. > > To give some more information - her the mdadm.conf: > > s15434194:~ # cat /etc/mdadm.conf > CREATE owner=root group=disk mode=0660 auto=yes > > MAILADDR root > > DEVICE containers partitions > ARRAY /dev/md1 level=raid1 num-devices=2 devices=/dev/sda1,/dev/sdb1 > ARRAY /dev/md3 level=raid1 num-devices=2 devices=/dev/sda3,/dev/sdb3 > > > Could it be that the problem lies in the order in the devices row? When I compare the working md1 and the non-working md3 array I see a difference in the mapping of devices to numbers: No, the order is irrelevant. The experiment below wouldn't change anything. NeilBrown > > For md1: > > Number Major Minor RaidDevice State > 0 8 1 0 active sync /dev/sda1 > 1 8 17 1 active sync /dev/sdb1 > > For md3: > > Number Major Minor RaidDevice State > 0 8 19 0 active sync /dev/sdb3 > 1 0 0 1 removed > > 2 8 3 - spare /dev/sda3 > > > Would this be worth a try (the disks need approx. 24 hours to reach the rebuild-state, so I'm reluctant to try without some hope) to do: > > 1. change the Array line in /etc/mdadm.conf for md3 to read (switching order): > ARRAY /dev/md3 level=raid1 num-devices=2 devices=/dev/sdb3,/dev/sda3 > 2. Remove the spare sda3 > 3. Zero the superblock of sda3 > 4. Add sda3 again to the array > > ? > > Mit freundlichen Grüßen > > Matthias Bläsing > Abt IT > KompetenzCenter > > Tel.: 02351 950-344 > Fax.: 02351 950-222 > mailto: matthias.blaesing@xxxxxxxxxx > www.persona.de > > > persona service Verwaltungs AG & Co. KG > Freisenbergstraße 31 • 58513 Lüdenscheid > Tel.: (02351) 950-0 • Fax: (02351) 950-222 > Sitz Lüdenscheid • Registergericht Iserlohn, HRA Nr. 2930 > > persönlich haftende Gesellschafterin: persona service AG > Gartenstraße 93 • CH-4002 Basel > Handelsregister Basel, Nr. CH-270.3.012.836-8 > diese vertreten durch den Verwaltungsrat: > Georg Breucker (Präsident) und Dr. Sebastian Burckhardt > www.persona.de
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