Hi,
I woke up this morning to see the dreaded email from mdadm telling me
one of my drives failed overnight, while I was happily dreaming about
cute puppies and kittens installing a rainbow-colored roof on my
house. The array is a RAID6 (two parity drives) and this is the
current state:
md0 : active raid6 sdd1[5] sdg1[4] sde1[3](F) sdh1[2] sdf1[1] sdi1[0]
11720009728 blocks super 1.2 level 6, 512k chunk, algorithm 2
[6/5] [UUU_UU]
I've been using RAID in Linux for years, but this is actually the
first time I've had a disk fail in one.
If I remember correctly, the process should be as simple as:
#remove the failed disk from the array:
mdadm /dev/md0 -r /dev/sde1
#pull the drive, replace with new one, partition it, then add it to the array:
mdadm /dev/md0 -a /dev/sde1
and sit back and eat popcorn while I enjoy the blinkenlights for the
next several hours/days? :) Any advice/suggestions for managing this
process any differently?
For now I have unmounted the filesystem that sits atop it, to prevent
any more writes from occurring, just in case...
Thanks,
Paul
