I've tried searching for this answer, but haven't found anything elegant.
I have numerous servers in a colo that is in another state. I need to find a way to check that the servers have RAID-1 on them, so that I can determine if they were setup correctly by my colo.
df -h shows:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
442G 1.5G 418G 1% /
/dev/sda1 99M 19M 75M 20% /boot
tmpfs 4.0G 0 4.0G 0% /dev/shm
however as CentOS uses LVM by default, this doesn't indicate if a RAID-1 is present.
it is supposed to be a software raid, so I'm pretty sure there should be a way to check.
Thanks
Answer
cat /proc/mdstat will give you
raid usage on your machine
dmesg | grep raid will tell you if raid is
enabled in your kernel
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