On Fri, March 21, 2008 7:26 am, Pradeep wrote: > Hi, > It appears that a 'mdadm -A' command erased the superblocks on my > disks. > Could you please take a look and let me know if I did something wrong ? > > (I was adding 2 disks that were in a raid 1 set to a new machine running > fedora 8.) > Briefly, I issued an 'mdadm --examine /dev/sdd1' command to check the > disks in my raid 1 > array. > (repeat similar command for /dev/sde1) > > Then I issued 'mdadm -A -v -u '400f8c5f:045827ea:f72fe561:698ccea2' > /dev/md0' > which errored out because it was looking at /dev/sdd instead of /dev/sdd1 > This isn't why it errored out. It looked at sdd and found nothing there. It also looked at various other devices and found nothing usable there. That is perfectly normal. What is strange is that it found sdd1 and sde1 in /proc/partitions, but couldn't find names for them in /dev, so it reports them as 8:65 and 8:49 However when you ran the "--examine", it did find /dev/sdd1 in /dev with the correct major/minor numbers. So something must have happened between those two commands. Also, I cannot think why it is reporting "Invalid argument" and failing to add the devices to the array. Where there any kernel message (view with 'dmesg') at this time? NeilBrown -- 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
