How to create a RAID volume 1 ?
syntax :- mdadm --create <raid devicename> --level=<raid level> <devises>
for ex :- mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdb2
TO get details of raid device ?
mdadm--detail /dev/md1
TO check the current active raid device :-
cat /proc/mdstat
To create a filesystem ?
syntax :- mkfs -t xfs <devicename>
for ex :- mkfs -t xfs /dev/md1
How to add new disk to existing raid ?
syntax :- mdadm <existing raid device> --add <new device >
for ex :- mdadm /dev/md1 --add </dev/sdc>
to increase
mdadm --grow --raid-devices=3 /dev/md1
fstab entries
/dev/md1 <mountpath> <filesystemtype> defaults 0 0
