今天在一台Ubuntu服务器上进行挂载硬盘时报错提示“linux_raid_member”

下面看下解决办法。

首先查看下原有设备。

root@file:/home/file# lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
loop0    7:0    0 89.1M  1 loop /snap/core/8268
sda      8:0    0  477G  0 disk 
├─sda1   8:1    0    1M  0 part 
└─sda2   8:2    0  477G  0 part /
sdb      8:16   0  7.3T  0 disk 

开始分区、挂载

root@file:/home/file# parted /dev/sdb
GNU Parted 3.2
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p                                                                
Model: ATA ST8000NM000A-2KE (scsi)
Disk /dev/sdb: 8002GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags: 
Number  Start  End  Size  File system  Name  Flags
                                
(parted) mklabel gpt                                                      
Warning: The existing disk label on /dev/sdb will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes/No? y                                                                 
(parted) mkpart                                                           
Partition name?  []?                                                      
File system type?  [ext2]? ext4                                           
Start? 0                                                                  
End? -1                                                                   
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel?                                                            
Ignore/Cancel? i                                                          
(parted) exit

感觉哪里不对，之前挂载没有这些提示啊，继续挂载

root@file:/home/file# mount /dev/sdb1 /data
mount: /data: unknown filesystem type 'linux_raid_member'.

问题来了，格式化一下，依然报错

root@file:/home/file# mkfs.ext4 /dev/sdb1
mke2fs 1.44.1 (24-Mar-2018)
/dev/sdb1 contains a linux_raid_member file system labelled 'file-System-Product-Name:0'
Proceed anyway? (y,N) y
/dev/sdb1 is apparently in use by the system; will not make a filesystem here!

这时才想起来，原来这块硬盘是之前做过软raid，好了问题找到了，我们删除下raid信息

root@file:/home/file# dmsetup status
No devices found
root@file:/home/file# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] 
md127 : inactive sdb1[1](S)
      7813893495 blocks super 1.2
unused devices: <none>
root@file:/home/file#  mdadm -S /dev/md127mdadm: stopped /dev/md127
root@file:/home/file#   cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
 unused devices: <none>

再次格式化

root@file:/home/file# mkfs.ext4 /dev/sdb1
mke2fs 1.44.1 (24-Mar-2018)
/dev/sdb1 contains a linux_raid_member file system labelled 'file-System-Product-Name:0'
Proceed anyway? (y,N) y
/dev/sdb1 alignment is offset by 3072 bytes.
This may result in very poor performance, (re)-partitioning suggested.
Creating filesystem with 1953506397 4k blocks and 244191232 inodes
Filesystem UUID: 1d2d1374-ca5e-42ad-87bd-6d8cdb7279b1
Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 
        102400000, 214990848, 512000000, 550731776, 644972544, 1934917632
Allocating group tables: done     
Writing inode tables: done  
Creating journal (262144 blocks): done
Writing superblocks and filesystem accounting information:            
done

挂载没问题。

root@file:/home/file# mount /dev/sdb1 /data

查看下，容量出来了

root@file:/home/file# df -h /data 
Filesystem      Size  Used Avail Use% Mounted on/dev/sdb1       7.3T   93M  6.9T   1% /data

添加到 /etc/fstab 文件末尾，保存退出 实现开机自动挂载

root@file:/home/file# vim /etc/fstab 
/dev/sdb1  /data        ext4    defaults        0 0