I've set up a Raid 5 system at home for the first time. I've added 3 disks into the pc, and parted them all in 1 partition of 8G, and 1 partition of the remaining 492G then I made 2 raid volumes with each partition
Mounted the 16G as swap, and the other one as the system disk.
This worked like a charm, then I added a 4rd disk to the array
did the same thing (parting in 2 partitions, and added both to the previously defined raid5 arrays)
mdadm --add /dev/sdd1 etc...)
Then I did the
mdadm --grow /dev/md0 --raid-devices=4 command
Both arrays got rebuild, but they're not using the new size. and the performance of my system dropped terribly.
I've tried booting in recovery mode, and doing the
resize2fs /dev/md1 command, but I keep getting "read only disk" stuff as issue.
How can I fix this? because normal boot will keep my main disk in "busy" status, and I've not dared doing a forced unmount
What can I do to get my performance back up?
If any more information is needed, do tell, and I'll supply what I can. Thx in advance.