我正在运行 Ubuntu Server 18.04，在软件 raid 0 中有 4x2TB 磁盘。在 Web 面板操作系统安装页面中，我指定了 4 个分区，/boot 500MB、root 15GB、swap 4GB 和 /home 以及其余所有分区。但是，root 分区似乎为 60GB，而不是 15GB。如能得到任何帮助，我将不胜感激。
$ lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT
NAME SIZE FSTYPE TYPE MOUNTPOINT
sda 1.8T disk
├─sda1 1M part
├─sda2 500M linux_raid_member part
│ └─md2 500M ext4 raid1 /boot
├─sda3 15G linux_raid_member part
│ └─md3 60G ext4 raid0 /
├─sda4 4G linux_raid_member part
│ └─md4 4G swap raid1 [SWAP]
└─sda5 1.8T linux_raid_member part
└─md5 7.2T xfs raid0 /home
sdb 1.8T disk
├─sdb1 1M part
├─sdb2 500M linux_raid_member part
│ └─md2 500M ext4 raid1 /boot
├─sdb3 15G linux_raid_member part
│ └─md3 60G ext4 raid0 /
├─sdb4 4G linux_raid_member part
│ └─md4 4G swap raid1 [SWAP]
└─sdb5 1.8T linux_raid_member part
└─md5 7.2T xfs raid0 /home
sdc 1.8T disk
├─sdc1 1M part
├─sdc2 500M linux_raid_member part
│ └─md2 500M ext4 raid1 /boot
├─sdc3 15G linux_raid_member part
│ └─md3 60G ext4 raid0 /
├─sdc4 4G linux_raid_member part
│ └─md4 4G swap raid1 [SWAP]
└─sdc5 1.8T linux_raid_member part
└─md5 7.2T xfs raid0 /home
sdd 1.8T disk
├─sdd1 1M part
├─sdd2 500M linux_raid_member part
│ └─md2 500M ext4 raid1 /boot
├─sdd3 15G linux_raid_member part
│ └─md3 60G ext4 raid0 /
├─sdd4 4G linux_raid_member part
│ └─md4 4G swap raid1 [SWAP]
└─sdd5 1.8T linux_raid_member part
└─md5 7.2T xfs raid0 /home
──
$ cat /proc/mdstat
Personalities : [raid0] [raid1] [linear] [multipath] [raid6] [raid5] [raid4] [raid10]
md5 : active raid0 sdb5[1] sdd5[0] sda5[3] sdc5[2]
7731781632 blocks super 1.2 512k chunks
md4 : active raid1 sdb4[1] sdd4[0] sdc4[2] sda4[3]
4189184 blocks super 1.2 [4/4] [UUUU]
md3 : active raid0 sdb3[1] sdd3[0] sdc3[2] sda3[3]
62877696 blocks super 1.2 512k chunks
md2 : active raid1 sdb2[1] sdd2[0] sda2[3] sdc2[2]
511936 blocks [4/4] [UUUU]
unused devices: <none>
──
$ sudo mdadm -D /dev/md*
mdadm: /dev/md does not appear to be an md device
/dev/md2:
Version : 0.90
Creation Time : Sat Aug 25 13:13:01 2018
Raid Level : raid1
Array Size : 511936 (499.94 MiB 524.22 MB)
Used Dev Size : 511936 (499.94 MiB 524.22 MB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 2
Persistence : Superblock is persistent
Update Time : Sat Aug 25 13:24:49 2018
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Consistency Policy : resync
UUID : 6b099ee4:971af168:d096250b:d3276e37 (local to host 2037643)
Events : 0.268
Number Major Minor RaidDevice State
0 8 50 0 active sync /dev/sdd2
1 8 18 1 active sync /dev/sdb2
2 8 34 2 active sync /dev/sdc2
3 8 2 3 active sync /dev/sda2
/dev/md3:
Version : 1.2
Creation Time : Sat Aug 25 13:13:01 2018
Raid Level : raid0
Array Size : 62877696 (59.96 GiB 64.39 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Sat Aug 25 13:13:01 2018
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Chunk Size : 512K
Consistency Policy : none
Name : 2037643:3 (local to host 2037643)
UUID : da299594:601a8ed6:c0f59007:8576c2d7
Events : 0
Number Major Minor RaidDevice State
0 8 51 0 active sync /dev/sdd3
1 8 19 1 active sync /dev/sdb3
2 8 35 2 active sync /dev/sdc3
3 8 3 3 active sync /dev/sda3
/dev/md4:
Version : 1.2
Creation Time : Sat Aug 25 13:13:02 2018
Raid Level : raid1
Array Size : 4189184 (4.00 GiB 4.29 GB)
Used Dev Size : 4189184 (4.00 GiB 4.29 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Sat Aug 25 13:24:30 2018
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Consistency Policy : resync
Name : 2037643:4 (local to host 2037643)
UUID : 903b6b29:879bab06:0f6c92af:8b417b6d
Events : 19
Number Major Minor RaidDevice State
0 8 52 0 active sync /dev/sdd4
1 8 20 1 active sync /dev/sdb4
2 8 36 2 active sync /dev/sdc4
3 8 4 3 active sync /dev/sda4
/dev/md5:
Version : 1.2
Creation Time : Sat Aug 25 13:13:02 2018
Raid Level : raid0
Array Size : 7731781632 (7373.60 GiB 7917.34 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Sat Aug 25 13:13:02 2018
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Chunk Size : 512K
Consistency Policy : none
Name : 2037643:5 (local to host 2037643)
UUID : 39165199:f7b432ff:8c4db0ec:54c5397e
Events : 0
Number Major Minor RaidDevice State
0 8 53 0 active sync /dev/sdd5
1 8 21 1 active sync /dev/sdb5
2 8 37 2 active sync /dev/sdc5
3 8 5 3 active sync /dev/sda5
答案1
您有 4 个磁盘和 raid0，= 4*15 = 60 GB。
lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT
向您展示如何/root在 4 个磁盘上分布。
如果总共有 15 GB，您必须选择 3.75 GB。