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为什么挂载点有时会改变？

tag-icon • tag-icon boot mount
为什么挂载点有时会改变？

我有两个 SAN 设备/dev/sda和/dev/sdb；

Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: Virtual disk    
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 4D63EAE4-196D-4EF2-BACA-2141E63DB0F6

Disk /dev/sdb: 1000 GiB, 1073741824000 bytes, 2097152000 sectors
Disk model: Virtual disk    
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

但有时重启后/dev/sda会挂载/dev/sdb。我该如何防止它被更改？

普通的

/dev/sda2  ext4  976M  203M  707M  23% /boot
/dev/sdb   ext4  984G  9.9G  924G   2% /workspace

异常

/dev/sdb2  ext4  976M  203M  707M  23% /boot

这是/etc/fstab

/dev/disk/by-id/dm-uuid-LVM-K680yYzEVuI9918TZkE1xLA9ArCLzJlDiU7cnVQoJxhLQcn5D4e8Xu05Vs4CWt4P / ext4 defaults 0 0
/dev/disk/by-uuid/a1b97ff4-3862-4c49-8b65-8618dd32f1ff /boot ext4 defaults 0 0
/swap.img       none    swap    sw      0       0
/dev/sdb /workspace ext4 defaults 0 0

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