【就业班作业】【第六周】创建一个2G的文件系统，块大小为2048byte，预留1%可用空间,文件系统 ext4，卷标为TEST，要求此分区开机后自动挂载至/test目录，且默认有acl挂载选项

1、虚拟机环境：

在线增加一块20G硬盘，识别使用：echo "- - -" > /sys/class/scsi_host/host0/scan

2、分一个2G的分区

fdisk  /dev/sdb
lsblk

3、将2G空间的分区格式化为块大小为2048byte，预留1%可用空间,文件系统 ext4，卷标为TEST

mkfs.ext4 -t ext4  -b 2048 -m 1 -L TEST

[root@lab-centos-7 /]# blkid /dev/sdb1
/dev/sdb1: LABEL="TEST" UUID="9aa32749-d986-4501-9bfb-337f2b2b5313" TYPE="ext4"
[root@lab-centos-7 /]# tune2fs -l /dev/sdb1
tune2fs 1.42.9 (28-Dec-2013)
Filesystem volume name:   TEST
Last mounted on:          <not available>
Filesystem UUID:          9aa32749-d986-4501-9bfb-337f2b2b5313
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super huge_file uninit_bg dir_nlink extra_isize
Filesystem flags:         signed_directory_hash 
Default mount options:    user_xattr acl
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              131072
Block count:              1048576
Reserved block count:     10485
Free blocks:              994651
Free inodes:              131061
First block:              0
Block size:               2048
Fragment size:            2048
Group descriptor size:    64
Reserved GDT blocks:      512
Blocks per group:         16384
Fragments per group:      16384
Inodes per group:         2048
Inode blocks per group:   256
Flex block group size:    16
Filesystem created:       Mon Sep  7 15:14:35 2020
Last mount time:          n/a
Last write time:          Mon Sep  7 15:14:36 2020
Mount count:              0
Maximum mount count:      -1
Last checked:             Mon Sep  7 15:14:35 2020
Check interval:           0 (<none>)
Lifetime writes:          65 MB
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:	          256
Required extra isize:     28
Desired extra isize:      28
Journal inode:            8
Default directory hash:   half_md4
Directory Hash Seed:      2b687203-2494-4373-bf4d-91b1e8b63ce8
Journal backup:           inode blocks
[root@lab-centos-7 /]# 

 

4、要求此分区开机后自动挂载至/test目录，且默认有acl挂载选项

将配置写入/etc/fstab

[root@localhost ~]# cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Tue Sep  8 17:38:50 2020
#
# 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
#
/dev/mapper/centos-root /                       xfs     defaults        0 0
UUID=d8e990e2-8cad-476a-8452-1c34339ce08b /boot                   xfs     defaults        0 0
/dev/mapper/centos-swap swap                    swap    defaults        0 0
UUID=4274fb9f-8cef-4d77-89ce-6c2387eb7de6	/test	ext4	acl	0 0
[root@localhost ~]# 

[root@localhost ~]# tune2fs -l  /dev/sdb1
tune2fs 1.42.9 (28-Dec-2013)
Filesystem volume name:   TEST
Last mounted on:          <not available>
Filesystem UUID:          4274fb9f-8cef-4d77-89ce-6c2387eb7de6
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery extent 64bit flex_bg sparse_super huge_file uninit_bg dir_nlink extra_isize
Filesystem flags:         signed_directory_hash 
Default mount options:    user_xattr acl

　　(完)