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  • 阿里云磁盘扩容记录

    [root@demo ~]# service ngxin stop
    Redirecting to /bin/systemctl stop ngxin.service
    Failed to stop ngxin.service: Unit ngxin.service not loaded.
    [root@demo ~]# service nginx stop
    Stopping nginx (via systemctl):                            [  OK  ]
    [root@demo ~]# umount /dev/vdb1
    umount: /data: target is busy.
            (In some cases useful info about processes that use
             the device is found by lsof(8) or fuser(1))
    [root@demo ~]# service mysqld stop
    Shutting down MySQL..                                      [  OK  ]
    [root@demo ~]# umount /dev/vdb1
    [root@demo ~]# df -h
    Filesystem      Size  Used Avail Use% Mounted on
    devtmpfs        3.9G     0  3.9G   0% /dev
    tmpfs           3.9G     0  3.9G   0% /dev/shm
    tmpfs           3.9G  500K  3.9G   1% /run
    tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
    /dev/vda1        40G  8.3G   29G  23% /
    tmpfs           783M     0  783M   0% /run/user/0
    [root@demo ~]# fdisk /dev/vdb
    Welcome to fdisk (util-linux 2.23.2).
    
    Changes will remain in memory only, until you decide to write them.
    Be careful before using the write command.
    
    
    Command (m for help): d
    Selected partition 1
    Partition 1 is deleted
    
    Command (m for help): n
    Partition type:
       p   primary (0 primary, 0 extended, 4 free)
       e   extended
    Select (default p): 
    Using default response p
    Partition number (1-4, default 1): 
    First sector (2048-230686719, default 2048): 
    Using default value 2048
    Last sector, +sectors or +size{K,M,G} (2048-230686719, default 230686719): 
    Using default value 230686719
    Partition 1 of type Linux and of size 110 GiB is set
    
    Command (m for help): wq
    The partition table has been altered!
    
    Calling ioctl() to re-read partition table.
    Syncing disks.
    [root@demo ~]# e2fsck -f /dev/vdb1
    e2fsck 1.42.9 (28-Dec-2013)
    /dev/vdb1 is mounted.
    e2fsck: Cannot continue, aborting.
    
    
    [root@demo ~]# df -h 
    Filesystem      Size  Used Avail Use% Mounted on
    devtmpfs        3.9G     0  3.9G   0% /dev
    tmpfs           3.9G     0  3.9G   0% /dev/shm
    tmpfs           3.9G  500K  3.9G   1% /run
    tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
    /dev/vda1        40G  8.3G   29G  23% /
    tmpfs           783M     0  783M   0% /run/user/0
    /dev/vdb1        69G   59G  6.4G  91% /data
    [root@demo ~]# umount /dev/vdb1
    [root@demo ~]# df -h 
    Filesystem      Size  Used Avail Use% Mounted on
    devtmpfs        3.9G     0  3.9G   0% /dev
    tmpfs           3.9G     0  3.9G   0% /dev/shm
    tmpfs           3.9G  500K  3.9G   1% /run
    tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
    /dev/vda1        40G  8.3G   29G  23% /
    tmpfs           783M     0  783M   0% /run/user/0
    [root@demo ~]# e2fsck -f /dev/vdb1
    e2fsck 1.42.9 (28-Dec-2013)
    Pass 1: Checking inodes, blocks, and sizes
    Pass 2: Checking directory structure
    Pass 3: Checking directory connectivity
    Pass 4: Checking reference counts
    Pass 5: Checking group summary information
    /dev/vdb1: 84876/4587520 files (0.9% non-contiguous), 15768264/18349824 blocks
    [root@demo ~]# resize2fs /dev/vdb1
    resize2fs 1.42.9 (28-Dec-2013)
    Resizing the filesystem on /dev/vdb1 to 28835584 (4k) blocks.
    The filesystem on /dev/vdb1 is now 28835584 blocks long.
    
    [root@demo ~]# df -h
    Filesystem      Size  Used Avail Use% Mounted on
    devtmpfs        3.9G     0  3.9G   0% /dev
    tmpfs           3.9G     0  3.9G   0% /dev/shm
    tmpfs           3.9G  500K  3.9G   1% /run
    tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
    /dev/vda1        40G  8.3G   29G  23% /
    tmpfs           783M     0  783M   0% /run/user/0
    [root@demo ~]# mount /dev/vdb1 /resizetest
    mount: mount point /resizetest does not exist
    [root@demo ~]#  df -h
    Filesystem      Size  Used Avail Use% Mounted on
    devtmpfs        3.9G     0  3.9G   0% /dev
    tmpfs           3.9G     0  3.9G   0% /dev/shm
    tmpfs           3.9G  500K  3.9G   1% /run
    tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
    /dev/vda1        40G  8.3G   29G  23% /
    tmpfs           783M     0  783M   0% /run/user/0
    [root@demo ~]#  mount /dev/vdb1
    [root@demo ~]# df -h
    Filesystem      Size  Used Avail Use% Mounted on
    devtmpfs        3.9G     0  3.9G   0% /dev
    tmpfs           3.9G     0  3.9G   0% /dev/shm
    tmpfs           3.9G  500K  3.9G   1% /run
    tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
    /dev/vda1        40G  8.3G   29G  23% /
    tmpfs           783M     0  783M   0% /run/user/0
    /dev/vdb1       109G   59G   44G  58% /data
    [root@demo ~]# service nginx restart
    
    lsblk              查看分区和磁盘
    df -h             查看空间使用情况
    fdisk -l         分区工具查看分区信息
    cfdisk /dev/sda   查看分区
    blkid            查看硬盘label(别名)
    du -sh ./*        统计当前目录各文件夹大小
    free -h          查看内存大小
    cat /proc/cpuinfo| grep "cpu cores"| uniq                  查看cpu核心数
    cat /proc/cpuinfo| grep "physical id"|uniq| wc -l           查看物理cpu个数
    cat /proc/cpuinfo| grep "processor"| wc -l                  查看逻辑cpu的个数
    

      

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  • 原文地址:https://www.cnblogs.com/dudumao/p/11929703.html
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