多个磁盘做软件raid并解决分区aligned对齐问题

centos 服务器验证创建软件raid10数据盘，该机器缺少raid硬件。只能做软件raid。

/dev/sdd至/dev/sdm共10块8T磁盘，做raid10；

步骤如下：

（第一步）创建raid10
事先不需要对单个磁盘做分区
10个相同数据盘创建raid10命令：mdadm -C -v /dev/md10 -a yes -l 10 -n 10 /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm

2个相同数据盘创建raid1命令：mdadm -C -v /dev/md0 -a yes -l 1 -n 2 /dev/sdb /dev/sdc

创建命令参数说明：

选项：-C
专用选项：
-l 级别
-n 设备个数
-a {yes|no} 自动为其创建设备文件
-c 指定数据块大小（chunk）
-x 指定空闲盘（热备磁盘）个数，空闲盘（热备磁盘）能在工作盘损坏后自动顶替
-v, --verbose：显示细节

参考文档：

Linux中mdadm命令管理RAID磁盘阵列的实例总结_PHP教程_IDC笔记

linux软raid mdadm命令详讲_mdadm查看raid信息-CSDN博客

mdadm -D /dev/md10 查看状态

【第二步】解决分区格式化的对齐问题："The resulting partition is not properly aligned for best performance."

[root@10.74.67.29~]# cat /sys/block/md10/queue/optimal_io_size
2621440
[root@10.74.67.29~]# cat /sys/block/md10/queue/minimum_io_size
524288
[root@10.74.67.29~]# cat /sys/block/md10/alignment_offset
0
[root@10.74.67.29~]# cat /sys/block/md10/queue/physical_block_size
4096

获取正确的偏移扇区数是将 optimal_io_size 和 alignment_offset 相加然后除以 physical_block_size，这里算出来是640=(optimal_io_size +alignment_offset )/physical_block_size ;

parted /dev/md10

(parted) h
(parted) mklabel gpt
(parted) mkpart primary xfs 640 100% 【这是关键步骤】

【第三步】正常的分区格式化大容量磁盘, 添加开机自启动

mkfs.xfs /dev/md10p1 【格式化成默认的xfs文件系统】

blkid /dev/md10p1

cat /etc/fstab && vi /etc/fstab

以下是详细命令

【第一步】创建raid10
不需要对单个磁盘做分区
[root@10.74.67.29~]# mdadm -C -v /dev/md10 -a yes -l 10 -n 10 /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm
mdadm: layout defaults to n2
mdadm: layout defaults to n2
mdadm: chunk size defaults to 512K
mdadm: partition table exists on /dev/sdd
mdadm: partition table exists on /dev/sdd but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sde
mdadm: partition table exists on /dev/sde but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdf
mdadm: partition table exists on /dev/sdf but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdg
mdadm: partition table exists on /dev/sdg but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdh
mdadm: partition table exists on /dev/sdh but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdi
mdadm: partition table exists on /dev/sdi but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdj
mdadm: partition table exists on /dev/sdj but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdk
mdadm: partition table exists on /dev/sdk but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdl
mdadm: partition table exists on /dev/sdl but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdm
mdadm: partition table exists on /dev/sdm but will be lost or
meaningless after creating array
mdadm: size set to 7813894144K
mdadm: automatically enabling write-intent bitmap on large array
Continue creating array? yes
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md10 started.
[root@10.74.67.29~]# mdadm -D /dev/md10
/dev/md10:
Version : 1.2
Creation Time : Wed Dec 20 11:38:54 2023
Raid Level : raid10
Array Size : 39069470720 (37259.55 GiB 40007.14 GB)
Used Dev Size : 7813894144 (7451.91 GiB 8001.43 GB)
Raid Devices : 10
Total Devices : 10
Persistence : Superblock is persistent

Intent Bitmap : Internal

Update Time : Wed Dec 20 11:39:09 2023
State : clean, resyncing
Active Devices : 10
Working Devices : 10
Failed Devices : 0
Spare Devices : 0

Layout : near=2
Chunk Size : 512K

Consistency Policy : bitmap

Resync Status : 0% complete

Name : 10
UUID : e6b3fd6d:b15db153:afa11b20:7f6a2231
Events : 3

Number Major Minor RaidDevice State
0 8 48 0 active sync set-A /dev/sdd
1 8 64 1 active sync set-B /dev/sde
2 8 80 2 active sync set-A /dev/sdf
3 8 96 3 active sync set-B /dev/sdg
4 8 112 4 active sync set-A /dev/sdh
5 8 128 5 active sync set-B /dev/sdi
6 8 144 6 active sync set-A /dev/sdj
7 8 160 7 active sync set-B /dev/sdk
8 8 176 8 active sync set-A /dev/sdl
9 8 192 9 active sync set-B /dev/sdm
[root@10.74.67.29~]#

【第二步】解决分区格式化的对齐问题："The resulting partition is not properly aligned for best performance."

(parted) mkpart primary xfs 640 100% 【这是关键步骤】

(parted) mkpart primary xfs 2048 100% 【不涉及align对齐问题，大容量磁盘做分区默认都这样】

关键一步需要解决align对齐问题，参考链接：
https://www.cnblogs.com/oradba/p/16145117.html
https://blog.51cto.com/u_15076212/4373955
https://blog.csdn.net/zfw_666666/article/details/126744930

[root@10.74.67.29~]# parted /dev/md10
GNU Parted 3.1
Using /dev/md10
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Error: /dev/md10: unrecognised disk label
Model: Linux Software RAID Array (md)
Disk /dev/md10: 40.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: unknown
Disk Flags:
(parted) mklabel gpt
(parted) mkpart primary xfs 2048
End? 40.0TB
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? Cancel
(parted) mkpart primary xfs 1024
End? 40.0TB
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? ^C
(parted) q
Information: You may need to update /etc/fstab.

获取正确的偏移扇区数是将 optimal_io_size 和 alignment_offset 相加然后除以 physical_block_size.
【算出来是640】
[root@10.74.67.29~]# parted /dev/md10
GNU Parted 3.1
Using /dev/md10
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: Linux Software RAID Array (md)
Disk /dev/md10: 40.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
3 640MB 640MB 512B primary
1 1024MB 40.0TB 40.0TB primary

(parted) rm 3
(parted) rm 1
(parted) mkpart primary 1MiB 100%
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? ^C
(parted) mkpart primary 640MiB 100%
Error: Unable to satisfy all constraints on the partition.
(parted) mkpart primary 640 100%
Error: Unable to satisfy all constraints on the partition.
(parted) p
Model: Linux Software RAID Array (md)
Disk /dev/md10: 40.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 40.0TB 40.0TB primary

(parted) rm 1
(parted) p
Model: Linux Software RAID Array (md)
Disk /dev/md10: 40.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags

(parted) mkpart primary 640 100%
(parted) p
Model: Linux Software RAID Array (md)
Disk /dev/md10: 40.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 640MB 40.0TB 40.0TB primary

(parted) rm 1
(parted) mkpart primary xfs 640 100% 【这是关键步骤，上面的尝试mkpart primary 都是错的，rm 删掉】
(parted)
(parted) p
Model: Linux Software RAID Array (md)
Disk /dev/md10: 40.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 640MB 40.0TB 40.0TB primary

(parted) q
Information: You may need to update /etc/fstab.

[root@10.74.67.29~]# mkfs.xfs /dev/md10
md10 md10p1
[root@10.74.67.29~]# mkfs.xfs /dev/md10
md10 md10p1
[root@10.74.67.29~]# mkfs.xfs /dev/md10
md10 md10p1
[root@10.74.67.29~]# mkfs.xfs /dev/md10p1 【格式化成默认的xfs文件系统】
meta-data=/dev/md10p1 isize=512 agcount=37, agsize=268435328 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=9767210880, imaxpct=5
= sunit=128 swidth=640 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=521728, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@10.74.67.29~]#

[root@10.74.67.29~]# mkdir /data1
[root@10.74.67.29~]# ls /data/
acl-tools backup disk-manager
[root@10.74.67.29~]# mount /dev/md0 /data/
mount: /dev/md0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/md0,
missing codepage or helper program, or other error

In some cases useful info is found in syslog - try
dmesg | tail or so.
[root@10.74.67.29~]# mount /dev/md10 /data1/ 【mount挂载】
md10 md10p1
[root@10.74.67.29~]# mount /dev/md10 /data1/
md10 md10p1
[root@10.74.67.29~]# mount /dev/md10 /data1/
md10 md10p1
[root@10.74.67.29~]# mount /dev/md10p1 /data1/
[root@10.74.67.29~]# umount /dev/md10
umount: /dev/md10: not mounted
[root@10.74.67.29~]# umount /dev/md0
umount: /dev/md0: not mounted
[root@10.74.67.29~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 30G 2.7G 27G 10% /
devtmpfs 126G 0 126G 0% /dev
tmpfs 126G 4.0K 126G 1% /dev/shm
tmpfs 126G 2.0G 124G 2% /run
tmpfs 126G 0 126G 0% /sys/fs/cgroup
/dev/sda6 384G 33M 384G 1% /data
/dev/sda3 30G 1.1G 29G 4% /var
/dev/sda1 497M 139M 359M 28% /boot
tmpfs 26G 0 26G 0% /run/user/0
/dev/md10p1 37T 35M 37T 1% /data1
[root@10.74.67.29~]# cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Mon Dec 4 15:59:26 2023
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=0e31da41-c199-403e-9052-8752e2ca4e12 / xfs defaults 0 0
UUID=073e19e0-aefb-4ea1-8bb2-e270de8ef7d9 /boot xfs defaults 0 0
UUID=3e0074fe-35ec-4b32-a2b3-5af51b969737 /data xfs defaults 0 0
UUID=08cb2edf-c846-4b47-85ec-39a4e9f82bdb /var xfs defaults 0 0
UUID=fec0ba09-83b2-4d39-9afb-46a06061fbef swap swap defaults 0 0
[root@10.74.67.29~]# umount /dev/sda6
umount: /data: target is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
[root@10.74.67.29~]# blkid /dev/sd
/dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sda5 /dev/sda6 /dev/sdb1 /dev/sdc1
[root@10.74.67.29~]# umount /dev/md
md0 md0p1 md10 md10p1
[root@10.74.67.29~]# umount /dev/md
md0 md0p1 md10 md10p1
[root@10.74.67.29~]# umount /dev/md0p1
umount: /dev/md0p1: not mounted
[root@10.74.67.29~]# blkid /dev/md0p1
/dev/md0p1: UUID="7626c7d9-85d9-4582-a1a3-cde94aa3aa11" TYPE="xfs" PARTLABEL="primary" PARTUUID="393befd5-ce5e-452b-8ea3-69bdc5124b24"
[root@10.74.67.29~]# blkid /dev/md10p1
/dev/md10p1: UUID="544cd698-3a5b-420c-b2c1-22030e763664" TYPE="xfs" PARTLABEL="primary" PARTUUID="1eb5c2a0-22b9-4efd-ab4e-d88419096075"
[root@10.74.67.29~]# vi /etc/fstab 【添加开机自动挂载】
[root@10.74.67.29~]#
[root@10.74.67.29~]#
[root@10.74.67.29~]# ping www.baidu.com
connect: Network is unreachable
[root@10.74.67.29~]#
[root@10.74.67.29~]#
[root@10.74.67.29~]#

【重启机器raid1和raid10的两个磁盘名字都变了，验证开机自动挂载是正确的】

/dev/md10 变成了 /dev/md127

/dev/md10p1 变成了 /dev/md127p1

[wangzhong@Bastion-3~]# ssh root@10.74.67.29
Last login: Wed Dec 20 12:06:42 2023 from 10.10.130.172
[root@10.74.67.29~]#
[root@10.74.67.29~]#
[root@10.74.67.29~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 30G 2.7G 27G 10% /
devtmpfs 126G 0 126G 0% /dev
tmpfs 126G 4.0K 126G 1% /dev/shm
tmpfs 126G 25M 126G 1% /run
tmpfs 126G 0 126G 0% /sys/fs/cgroup
/dev/sda3 30G 1.1G 29G 4% /var
/dev/sda1 497M 139M 359M 28% /boot
/dev/md126p1 892G 33M 892G 1% /data
/dev/md127p1 37T 35M 37T 1% /data1
tmpfs 26G 0 26G 0% /run/user/0
[root@10.74.67.29~]# cd /data1/
[root@10.74.67.29data1]#
[root@10.74.67.29data1]# ls
[root@10.74.67.29data1]# fdisk -l

Disk /dev/sda: 480.1 GB, 480103981056 bytes, 937703088 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x0005448a

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 62466047 30720000 83 Linux
/dev/sda3 62466048 123906047 30720000 83 Linux
/dev/sda4 123906048 937701375 406897664 5 Extended
/dev/sda5 123908096 132296703 4194304 82 Linux swap / Solaris
/dev/sda6 132298752 937701375 402701312 83 Linux
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/sdb: 960.2 GB, 960197124096 bytes, 1875385008 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
Disk identifier: 6469EB04-15C4-446B-BE63-718E7D6FB533

# Start End Size Type Name
1 2048 1875384974 894.3G Linux filesyste
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/sdc: 960.2 GB, 960197124096 bytes, 1875385008 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
Disk identifier: 2DE63C12-C150-4D73-B5F5-156BE7FB408C

# Start End Size Type Name
1 2048 1875384974 894.3G Linux filesyste

Disk /dev/sdd: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdd1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sde: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sde1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdf: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdf1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdg: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdg1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdh: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdh1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdi: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdi1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdj: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdj1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdk: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdk1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdl: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdl1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.

Disk /dev/sdm: 8001.6 GB, 8001563222016 bytes, 15628053168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sdm1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/md127: 40007.1 GB, 40007138017280 bytes, 78138941440 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 524288 bytes / 2621440 bytes
Disk label type: gpt
Disk identifier: 80080657-2EE6-41EC-A62A-FD3EF006FB37

# Start End Size Type Name
1 1249280 78138936319 36.4T Microsoft basic primary
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/md126: 960.1 GB, 960060784640 bytes, 1875118720 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
Disk identifier: 1FF3CEA7-609B-4204-8B0F-1FF7976F70EF

# Start End Size Type Name
1 3999744 1875118079 892.2G Microsoft basic primary
[root@10.74.67.29data1]#

[root@10.74.67.29data1]# mdadm -D /dev/md
md/ md126 md126p1 md127 md127p1
[root@10.74.67.29data1]# mdadm -D /dev/md126
/dev/md126:
Version : 1.2
Creation Time : Thu Dec 14 12:21:59 2023
Raid Level : raid1
Array Size : 937559360 (894.13 GiB 960.06 GB)
Used Dev Size : 937559360 (894.13 GiB 960.06 GB)
Raid Devices : 2
Total Devices : 2
Persistence : Superblock is persistent

Intent Bitmap : Internal

Update Time : Wed Dec 20 12:44:30 2023
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0

Consistency Policy : bitmap

Name : 0
UUID : 2b7b2fc9:40aa1c39:d577443b:6a0907e4
Events : 953

Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 33 1 active sync /dev/sdc1
[root@10.74.67.29data1]# mdadm -D /dev/md127
/dev/md127:
Version : 1.2
Creation Time : Wed Dec 20 11:38:54 2023
Raid Level : raid10
Array Size : 39069470720 (37259.55 GiB 40007.14 GB)
Used Dev Size : 7813894144 (7451.91 GiB 8001.43 GB)
Raid Devices : 10
Total Devices : 10
Persistence : Superblock is persistent

Intent Bitmap : Internal

Update Time : Wed Dec 20 12:44:37 2023
State : clean, resyncing
Active Devices : 10
Working Devices : 10
Failed Devices : 0
Spare Devices : 0

Layout : near=2
Chunk Size : 512K

Consistency Policy : bitmap

Resync Status : 1% complete

Name : 10
UUID : e6b3fd6d:b15db153:afa11b20:7f6a2231
Events : 940

[root@10.74.67.29~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 30G 2.7G 27G 10% /
devtmpfs 126G 0 126G 0% /dev
tmpfs 126G 4.0K 126G 1% /dev/shm
tmpfs 126G 41M 126G 1% /run
tmpfs 126G 0 126G 0% /sys/fs/cgroup
/dev/sda3 30G 1.1G 29G 4% /var
/dev/sda1 497M 139M 359M 28% /boot
/dev/md126p1 892G 33M 892G 1% /data
/dev/md127p1 37T 35M 37T 1% /data1
tmpfs 26G 0 26G 0% /run/user/0
[root@10.74.67.29~]#

这是另外一台重启做完软件raid10 重启系统：