Для настройки soft RAID0 в Linux потребуется два раздела одинакового размера. В моем случае уже были подготовлены разделы, в случае их отсутствия вам создать дав одинаковых раздела на двух дисках. Весь процесс создания заключается всего в одной команде:
# mdadm -C /dev/md4 -l raid0 -n 2 /dev/nvme[0-1]n1p4 mdadm: /dev/nvme0n1p4 appears to contain an ext2fs file system size=376531904K mtime=Sun Feb 10 21:31:56 2019 mdadm: /dev/nvme1n1p4 appears to contain an ext2fs file system size=376531904K mtime=Sun Feb 10 21:31:56 2019 Continue creating array? y mdadm: Defaulting to version 1.2 metadata mdadm: array /dev/md4 started.
Просмотреть информацию о RAID массиве:
# mdadm -E /dev/nvme[0-1]n1p4 /dev/nvme0n1p4: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : d798bc02:2e3b3241:ef4ac56e:f742e569 Name : server:4 (local to host server) Creation Time : Mon Feb 11 05:08:40 2019 Raid Level : raid0 Raid Devices : 2 Avail Dev Size : 752801792 (358.96 GiB 385.43 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262056 sectors, after=0 sectors State : clean Device UUID : a0a31486:1d80a1ad:16728a55:5e91b47e Update Time : Mon Feb 11 05:08:40 2019 Bad Block Log : 512 entries available at offset 72 sectors Checksum : 5e149378 - correct Events : 0 Chunk Size : 512K Device Role : Active device 0 Array State : AA ('A' == active, '.' == missing, 'R' == replacing) /dev/nvme1n1p4: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : d798bc02:2e3b3241:ef4ac56e:f742e569 Name : server:4 (local to host server) Creation Time : Mon Feb 11 05:08:40 2019 Raid Level : raid0 Raid Devices : 2 Avail Dev Size : 752801792 (358.96 GiB 385.43 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262056 sectors, after=0 sectors State : clean Device UUID : ec2e8427:f2f506e8:c7895f2e:737b9873 Update Time : Mon Feb 11 05:08:40 2019 Bad Block Log : 512 entries available at offset 72 sectors Checksum : 7a29660 - correct Events : 0 Chunk Size : 512K Device Role : Active device 1 Array State : AA ('A' == active, '.' == missing, 'R' == replacing) root@server:~# mdadm --detail /dev/nvme[0-1]n1p4 mdadm: /dev/nvme0n1p4 does not appear to be an md device mdadm: /dev/nvme1n1p4 does not appear to be an md device root@server:~# mdadm --detail /dev/md4 /dev/md4: Version : 1.2 Creation Time : Mon Feb 11 05:08:40 2019 Raid Level : raid0 Array Size : 752801792 (717.93 GiB 770.87 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Mon Feb 11 05:08:40 2019 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Chunk Size : 512K Name : server:4 (local to host server) UUID : d798bc02:2e3b3241:ef4ac56e:f742e569 Events : 0 Number Major Minor RaidDevice State 0 259 10 0 active sync /dev/nvme0n1p4 1 259 4 1 active sync /dev/nvme1n1p4
Создаем файловую систему:
# mkfs.ext4 /dev/md4 mke2fs 1.43.4 (31-Jan-2017) Discarding device blocks: done Creating filesystem with 188200448 4k blocks and 47054848 inodes Filesystem UUID: 8d549021-4994-496d-90a0-ee53133036b1 Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000 Allocating group tables: done Writing inode tables: done Creating journal (262144 blocks): done Writing superblocks and filesystem accounting information: done
Далее монтируем командой:
mount /dev/md4 /home