Memory allocation across folders in RAID10?

Question

RAID

Good evening.
I wanted to write the background of the problem, but I'll get down to business.

Such a memory allocation, is it a standard?
All folders except /var belong to /dev/md0 and have a size of 19 GB, can this value be increased?

Answer 1

And you don't do that. Use the tried and tested LVM on RAID scheme. Then you can increase anything later on the fly.
And second: get rid of the habit of marking the whole place at once. It often happens to me - at first, a hundred gigs are marked out of a terabyte, and then if you need to add it somewhere - no problem, lvresize, resize2fs and that's it, I added. In this case, this could help you out even without lvm: we increase the filled partitions on the disks (you can use the usual fdisk) and then mdadm --grow and it will stretch the RAID itself to fill the increased partitions. And then resize2fs. But no, you marked the whole place, now /var is bothering you.
In this case, I would scatter the RAID and remake the system. This can be done almost without downtime, only for some time one "half" of the array will support the old one, and on the "second" you will build a new one.

Answer 2

I suspect that /home
takes up the most for you, alas, it’s not so easy to increase md0