linux文件系统篇

古城微笑少年丶 2024-04-17 06:03 53阅读 0赞

## 1. 文件系统知识储备 ##

#### 1.1什么是文件系统 ####

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#### 1.2linux文件系统的结构图 ####

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##### 文件系统对比 #####

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#### 1.3分区与文件系统的关系 ####

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对一个已经分好区的硬盘，不格式化直接进行挂载，会显示失败

[root@localhost ~]# mount /dev/sdb1 /opt/
    /dev/sdb1 looks like swapspace - not mounted
    mount: you must specify the filesystem type

需要进行格式化操作: mkfs.ext4 /dev/sdb1

[root@localhost ~]# mkfs.ext4 /dev/sdb1
    mke2fs 1.41.12 (17-May-2010)
    Filesystem label=
    OS type: Linux
    Block size=1024 (log=0)
    Fragment size=1024 (log=0)
    Stride=0 blocks, Stripe width=0 blocks
    25896 inodes, 103408 blocks
    5170 blocks (5.00%) reserved for the super user
    First data block=1
    Maximum filesystem blocks=67371008
    13 block groups
    8192 blocks per group, 8192 fragments per group
    1992 inodes per group
    Superblock backups stored on blocks: 
            8193, 24577, 40961, 57345, 73729
    
    Writing inode tables: done                            
    Creating journal (4096 blocks): done
    Writing superblocks and filesystem accounting information: done
    
    This filesystem will be automatically checked every 24 mounts or
    180 days, whichever comes first.  Use tune2fs -c or -i to override.
    [root@localhost ~]# mount /dev/sdb1 /opt/
    [root@localhost ~]# df -h
    Filesystem      Size  Used Avail Use% Mounted on
    /dev/sda2        18G  5.2G   12G  32% /
    tmpfs           931M     0  931M   0% /dev/shm
    /dev/sda1       291M   39M  238M  14% /boot
    /dev/sdb1        98M  5.6M   88M   6% /opt

## 2.文件系统的细节 ##

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