Fstab data sorting

1. Theoretical Basis

1.1 fstab Introduction

Fstab describes information about various file systems in the system. Generally, an application only reads this file and does not write the file. Maintenance is the work of the system administrator.

1.2 fstab path

ls /etc/fstab

1.3 fstab writing format

cat /etc/fstab

The details are as follows:

/dev/mapper/vg_ser-lv_root /                       ext4    defaults        1 1UUID=6add714f-ead0-4c08-946f-0948e6d92493 /boot                   ext4    defaults        1 2/dev/mapper/vg_ser-lv_home /home                   ext4    defaults        1 2/dev/mapper/vg_ser-lv_swap swap                    swap    defaults        0 0tmpfs                   /dev/shm                tmpfs   defaults        0 0devpts                  /dev/pts                devpts  gid=5,mode=620  0 0sysfs                   /sys                    sysfs   defaults        0 0proc                    /proc                   proc    defaults        0 0

Format details:

Column 1: device name, device volume name, or UUID (/dev/sda10 or label =/or UUID = "5a188a8b-94a1-42a5-8bea-ad80e84e7ac4") Column 2: the third column of the mounted directory (for example, "/mnt"): file system type of the mounted device (the type can be searched by the "/-T, -- types vfstype" command after man mount) column 4: Mount options (options can be searched by the "/command line options" command after man mount, multiple options are separated by commas) Column 5: Specifies whether to back up (1 backup, 0 without backup) Column 6: indicates the self-check sequence (0 without self-check, 1 or 2 self-check, 1 self-check level is higher than for root partition)

2. Practice

2.1 Mount System partitions

2.1.1 obtain UUID

 blkid /dev/sdb1 blkid /dev/mapper/vg_ser-lv_root

The partition is shown as follows:

/dev/sdb1: UUID="6add714f-ead0-4c08-946f-0948e6d92493" TYPE="ext4"

LV is displayed as follows:

/dev/mapper/vg_ser-lv_root: UUID="daaa8db7-b4a0-47e4-b02d-5f3a97f6db8a" TYPE="ext4"

Note: Only devices that have been formatted (with file systems) have UUID

2.1.2 edit fstab

vim /etc/fstab

Enter the mounting rules (for example, Mount/dev/sdb1)

UUID="6add714f-ead0-4c08-946f-0948e6d92493" /data ext4 defaults 0 2

2.1.3 mount all devices in fstab

mount -a

2.1.4 view mounting content

mount

2.2 how to mount samba

2.2.1 manual mounting Test

mount -t cifs -o username=administrator,password=pwd //192.168.0.200/D\$ /mnt

Note: The special symbol "$" in shell must use escape characters.

2.2.2 edit a mounting rule

vim /etc/fstab

Add the following content:

//192.168.0.200/D$ /mnt cifs defaults,username=administrator,password=pwd 0 0

2.2.3 mount all devices in fstab

mount -a

2.2.4 view mounting content

mount

This article is from the "Tan Linux cluster blog" blog, please be sure to keep this source http://cmdschool.blog.51cto.com/2420395/1875493

Fstab data sorting