On 01/04/14 19:21, Roland RoLaNd wrote: > Dear all, > I'm not used to handling software raid. > I've inherited a server which has raid 10 set. > one of our disks failed, and it's to be replaced today. > My question is; any hint how to add this new disk to the existing raid array ? > first thought is :- Create identical partitions as other disks in the array i'd like to add it to.- add it to raid. > Though i'm extremely worried of messing things up and wiping all my data. > Any hint would be appreciated > Remember to set the "Linux raid autodetect" flag (fd) on the partition. take a look into /proc/mdstat # cat /proc/mdstat To adjust the speed of rebuild look here: /proc/sys/dev/raid/speed_limit_max /proc/sys/dev/raid/speed_limit_min You can adjust them by echo-ing a new value directly into them: # echo 1000000 > /proc/sys/dev/raid/speed_limit_max and make that permanent by setting it in /etc/sysctl.conf dev.raid.speed_limit_max = 1000000 when you do finally get to rebuilding the array, use 'watch' to monitor the rebuild. # watch 'cat /proc/mdstat' Then follow JC's exampled and you should be right.
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