# mdadm --assemble --force /dev/md3 /dev/sd[c-l]1 This hint did it :) Thank you for your great help! Have a nice day. Stephan -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of Justin Piszcz Sent: Wednesday, January 07, 2009 7:19 PM To: stephan sperber Cc: linux-raid@xxxxxxxxxxxxxxx Subject: Re: failed raid5 after ide cable malfunction. On Wed, 7 Jan 2009, stephan sperber wrote: > Hello everybody! > I have a little trouble in getting the raid5 up and running again. > What has happened so far: > 1. Booting the System > 2. Ide cable had some troubles so 2 disks went "mad" during boot and raid > couldn't get assembled. > (/dev/sda4 /dev/sdb2) > 3. I forced poweroff because system wasn't responsible due to ATA connection > problems. > 4. after reboot the raid5 got up again, were clean, but attempted a resync. > 5. during the resync the cable had troubles again, so those 2 devices were > marked as spare. > 6. i forced a poweroff again and reseated the cable. > 7. I booted again but now all devices of the raid were marked as spare. > > Is there a possibility to get the raid active without dataloss? > > Here some infos: > cat /proc/mdstat > Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] > [raid10] > md1 : inactive sdc2[2](S) sdb2[1](S) sda4[0](S) > 709140864 blocks > > unused devices: <none> > > mdadm --detail /dev/md1 > mdadm: md device /dev/md1 does not appear to be active. > > Thx in advance > Stephan > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Example (use your disks obviously): # mdadm --assemble --force /dev/md3 /dev/sd[c-l]1 If that does not work, you can use Neil's advice from another thread: > Your only option at this stage is to re-create the array with the best > devices. Create it will one device missing so that it won't try a > resync. > e.g. > mdadm -C /dev/md0 -l5 -n5 /dev/hde1 /dev/hdg1 /dev/hdi1 missing /dev/sda1 You would want -C /dev/md1 -l5 -n3 and then specify only two of the disks with one "missing" See if this does it for you? Justin. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
