RAID 1: how to enlarge a partition?

Question

linux

The situation is as follows:
1. There is disk_0 with linux raid 1. The size is about 160 GB.
2. There is disk_1 with a size of 500 GB.
3. disk_0 was "cloned" by acronis on disk_1 "one to one", i.e. in proportion. The system started up from the new disk.
4. But there is unused space on disk_1.
5. OS SME Server 7.5 (remained from the previous admin), it is based on CentOS (4).
6. Two partitions, one for /boot (~100 MB), the second for everything else in lvm.
How to enlarge a section?

Answer 1

First pvresize (to enlarge the physical LVM partition)
Then lvextend (to enlarge the logical partition)
And then resize2fs if you have ext3/ext4 (to stretch the filesystem over the entire logical partition)

Answer 2

create a partition on the unused space, add it to lvm, and then change the size using lvm.

Answer 3

In theory, if there is no LVM, then you need to erase the partition table in fdisk (after writing it down on a piece of paper). Then create a volume at the beginning of the same sector as the old one, but make the final sector much further. Record, boot.
Everything is easier with lvm - it's just lvextend.
Then, after adjusting the partition size, you need to do resize2fs to change the boundaries of the file system.