linux - 自动挂载在 Linux/etc/fstab 中不起作用

Question

Centos 6.9，/usr01 挂载点添加到/etc/fstab 中:

UUID=aeb6fc55-7fb2-4a6b-aed8-3dff04c2766e /                       ext4    defaults        1 1
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/sda4               /usr01  ext3    defaults        0       0

当我手动执行mount -a时工作正常

[root@sandbox ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
overlay          43G   23G   19G  56% /
tmpfs           7.9G     0  7.9G   0% /dev
tmpfs           7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/sda3        43G   23G   19G  56% /hadoop
/dev/sda3        43G   23G   19G  56% /etc/resolv.conf
/dev/sda3        43G   23G   19G  56% /etc/hostname
/dev/sda3        43G   23G   19G  56% /etc/hosts
shm             7.9G     0  7.9G   0% /dev/shm
tmpfs           7.9G     0  7.9G   0% /dev/shm
/dev/sda4        51G   53M   48G   1% /usr01

但/usr01 未在启动时挂载。我尝试过替换自动默认值，尝试在/etc/rc.local 中添加“mount -a”。没有成功。

更新:尝试使用 UUID 挂载，但没有成功。系统重启后:

[root@sandbox ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
overlay          43G   23G   19G  56% /
tmpfs           7.9G     0  7.9G   0% /dev
tmpfs           7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/sda3        43G   23G   19G  56% /hadoop
/dev/sda3        43G   23G   19G  56% /etc/resolv.conf
/dev/sda3        43G   23G   19G  56% /etc/hostname
/dev/sda3        43G   23G   19G  56% /etc/hosts
shm              64M   12K   64M   1% /dev/shm
[root@sandbox ~]# cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Thu Jun  2 13:42:43 2016
#
# 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=aeb6fc55-7fb2-4a6b-aed8-3dff04c2766e /                       ext4    defaults        1 1
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
UUID=9be134d7-aaa5-4854-aa36-4f8f70b82571               /usr01                  ext3    defaults        0 0
[root@sandbox ~]# blkid /dev/sda4
/dev/sda4: UUID="9be134d7-aaa5-4854-aa36-4f8f70b82571" TYPE="ext3"
[root@sandbox ~]# mount -a
[root@sandbox ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
overlay          43G   23G   19G  56% /
tmpfs           7.9G     0  7.9G   0% /dev
tmpfs           7.9G     0  7.9G   0% /sys/fs/cgroup
/dev/sda3        43G   23G   19G  56% /hadoop
/dev/sda3        43G   23G   19G  56% /etc/resolv.conf
/dev/sda3        43G   23G   19G  56% /etc/hostname
/dev/sda3        43G   23G   19G  56% /etc/hosts
shm             7.9G     0  7.9G   0% /dev/shm
tmpfs           7.9G     0  7.9G   0% /dev/shm
/dev/sda4        51G   53M   48G   1% /usr01

Answer 1

尝试像这样通过uuid挂载

UUID=12345678-32c3-4f29-b4b6-123456789012  /usr01   ext3  defaults   0 0

您可以通过以下方式获取 uuid:

sudo blkid /dev/sda4

另一种可能性是您在“/”上使用了overlayfs。你的“沙箱”是某种 docker 实例，还是 LIVE-CD ？

注意:请参阅评论以获取真正的解决方案。该问题与 docker 在容器启动期间未使用/etc/fstab 有关