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  • linux下添加逻辑分区并挂载(手动和自动方式)

    一、查看新磁盘
    [root@desktop61 Desktop]# fdisk -cul /dev/sdc

    Disk /dev/sdc: 21.5 GB, 21474836480 bytes
    255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00000000
    二添加逻辑分区
    [root@desktop61 Desktop]# fdisk -cu /dev/sdc
    Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
    Building a new DOS disklabel with disk identifier 0x740491c5.
    Changes will remain in memory only, until you decide to write them.
    After that, of course, the previous content won't be recoverable.


    Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)


    Command (m for help): m
    Command action
    a toggle a bootable flag
    b edit bsd disklabel
    c toggle the dos compatibility flag
    d delete a partition
    l list known partition types
    m print this menu
    n add a new partition
    o create a new empty DOS partition table
    p print the partition table
    q quit without saving changes
    s create a new empty Sun disklabel
    t change a partition's system id
    u change display/entry units
    v verify the partition table
    w write table to disk and exit
    x extra functionality (experts only)


    Command (m for help): n
    Command action
    e extended
    p primary partition (1-4)
    e---------------〉选择扩展分区
    Partition number (1-4): 2
    First sector (2048-41943039, default 2048):
    Using default value 2048
    Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): 10G
    Value out of range.
    Last sector, +sectors or +size{K,M,G} (2048-41943039, default 41943039): +10G


    Command (m for help): N
    Command action
    l logical (5 or over)
    p primary partition (1-4)
    L-----------------〉选择逻辑分区
    First sector (4096-20973567, default 4096):
    Using default value 4096
    Last sector, +sectors or +size{K,M,G} (4096-20973567, default 20973567): +5G


    Command (m for help): N
    Command action
    l logical (5 or over)
    p primary partition (1-4)
    L-------------------〉选择逻辑分区
    First sector (10491904-20973567, default 10491904):
    Using default value 10491904
    Last sector, +sectors or +size{K,M,G} (10491904-20973567, default 20973567): +5G
    Value out of range.
    Last sector, +sectors or +size{K,M,G} (10491904-20973567, default 20973567):
    Using default value 20973567


    Command (m for help): P--------------->打印分区列表


    Disk /dev/sdc: 21.5 GB, 21474836480 bytes
    255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x740491c5


    Device Boot Start End Blocks Id System
    /dev/sdc2 2048 20973567 10485760 5 Extended
    /dev/sdc5 4096 10489855 5242880 83 Linux
    /dev/sdc6 10491904 20973566 5240831+ 83 Linux
    自动命名逻辑分区为:sdc5 sdc6
    Command (m for help): w------------------>保存退出
    The partition table has been altered!


    Calling ioctl() to re-read partition table.
    Syncing disks.
    [root@desktop61 Desktop]# part
    parted partprobe partx
    [root@desktop61 Desktop]# partx -a /dev/sdc
    BLKPG: Device or resource busy
    error adding partition 2
    BLKPG: Device or resource busy
    error adding partition 5
    BLKPG: Device or resource busy
    error adding partition 6
    三、查看新分区
    [root@desktop61 Desktop]# fdisk -cu /dev/sdc


    Command (m for help): p


    Disk /dev/sdc: 21.5 GB, 21474836480 bytes
    139 heads, 49 sectors/track, 6158 cylinders, total 41943040 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x740491c5


    Device Boot Start End Blocks Id System
    /dev/sdc2 2048 20973567 10485760 5 Extended
    /dev/sdc5 4096 10489855 5242880 83 Linux
    /dev/sdc6 10491904 20973566 5240831+ 83 Linux


    Command (m for help): q
    四、格式化分区
    1sdc5
    [root@desktop61 Desktop]# mkfs.ext4 /dev/sdc5
    mke2fs 1.41.12 (17-May-2010)
    Filesystem label=
    OS type: Linux
    Block size=4096 (log=2)
    Fragment size=4096 (log=2)
    Stride=0 blocks, Stripe width=0 blocks
    327680 inodes, 1310720 blocks
    65536 blocks (5.00%) reserved for the super user
    First data block=0
    Maximum filesystem blocks=1342177280
    40 block groups
    32768 blocks per group, 32768 fragments per group
    8192 inodes per group
    Superblock backups stored on blocks:
    32768, 98304, 163840, 229376, 294912, 819200, 884736


    Writing inode tables: done
    Creating journal (32768 blocks): done
    Writing superblocks and filesystem accounting information: done


    This filesystem will be automatically checked every 38 mounts or
    180 days, whichever comes first. Use tune2fs -c or -i to override.
    2sdc6
    [root@desktop61 Desktop]# mkfs.ext4 /dev/sdc6
    mke2fs 1.41.12 (17-May-2010)
    Filesystem label=
    OS type: Linux
    Block size=4096 (log=2)
    Fragment size=4096 (log=2)
    Stride=0 blocks, Stripe width=0 blocks
    327680 inodes, 1310207 blocks
    65510 blocks (5.00%) reserved for the super user
    First data block=0
    Maximum filesystem blocks=1342177280
    40 block groups
    32768 blocks per group, 32768 fragments per group
    8192 inodes per group
    Superblock backups stored on blocks:
    32768, 98304, 163840, 229376, 294912, 819200, 884736


    Writing inode tables: done
    Creating journal (32768 blocks): done
    Writing superblocks and filesystem accounting information: done


    This filesystem will be automatically checked every 30 mounts or
    180 days, whichever comes first. Use tune2fs -c or -i to override.
    五、新建挂载目录
    [root@desktop61 Desktop]# cd /mnt/
    [root@desktop61 mnt]# ls
    hgfs
    [root@desktop61 mnt]# mkdir sdc{5,6}
    [root@desktop61 mnt]# ls
    hgfs sdc5 sdc6
    [root@desktop61 mnt]# pwd
    /mnt
    六、分别自动挂载sdc5、sdc6到/mnt/sdc5 、 /mnt/sdc6
    [root@desktop61 mnt]# mount /dev/sdc5 /mnt/sdc5
    [root@desktop61 mnt]# mount /dev/sdc6 /mnt/sdc6
    七、查可挂载是否成功
    [root@desktop61 mnt]# mount
    /dev/mapper/vol0-root on / type ext4 (rw)
    proc on /proc type proc (rw)
    sysfs on /sys type sysfs (rw)
    devpts on /dev/pts type devpts (rw,gid=5,mode=620)
    tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0")
    /dev/sda1 on /boot type ext4 (rw)
    /dev/mapper/vol0-home on /home type ext4 (rw)
    /dev/sdb5 on /tmp/sdb5 type ext4 (rw)
    /dev/sdb6 on /tmp/sdb6 type ext4 (rw)
    none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
    vmware-vmblock on /var/run/vmblock-fuse type fuse.vmware-vmblock (rw,nosuid,nodev,default_permissions,allow_other)
    sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
    gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev)
    /dev/sdc5 on /mnt/sdc5 type ext4 (rw)
    /dev/sdc6 on /mnt/sdc6 type ext4 (rw)
    九、卸载sdc5 sdc6
    [root@desktop61 mnt]# umount /dev/sdc5
    [root@desktop61 mnt]# umount /dev/sdc6
    [root@desktop61 mnt]# mount
    /dev/mapper/vol0-root on / type ext4 (rw)
    proc on /proc type proc (rw)
    sysfs on /sys type sysfs (rw)
    devpts on /dev/pts type devpts (rw,gid=5,mode=620)
    tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0")
    /dev/sda1 on /boot type ext4 (rw)
    /dev/mapper/vol0-home on /home type ext4 (rw)
    /dev/sdb5 on /tmp/sdb5 type ext4 (rw)
    /dev/sdb6 on /tmp/sdb6 type ext4 (rw)
    none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
    vmware-vmblock on /var/run/vmblock-fuse type fuse.vmware-vmblock (rw,nosuid,nodev,default_permissions,allow_other)
    sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
    gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev)
    十、手工挂载
    1、查看sdb5的UUID
    [root@desktop61 mnt]#blkid /dev/sdb5
    2、手工挂载sdb5、sdb6
    [root@desktop61 mnt]# cd /etc
    [root@desktop61 etc]# vi fstab


    #
    # /etc/fstab
    # Created by anaconda on Fri Apr 11 00:49:26 2014
    #
    # 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/vol0-root / ext4 defaults 1 1
    UUID=9353a628-e49f-4675-abf4-b0fe76b38fbc /boot ext4 defaults 1 2
    /dev/mapper/vol0-home /home ext4 defaults 1 2
    UUID=f3d4a81c-f2d6-48d8-be1a-35647cd74615 swap swap defaults 0 0
    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=dfa6e086-e5be-4856-9e8d-9565d52b82e6 /mnt/sdc5 ext4 defaults 0 0
    /dev/sdc6 /mnt/sdc6 ext4 defaults 0 0
    方式有通过分区名和UUID
    十一、查看挂载结果
    [root@desktop61 etc]# mount -a------------------〉刷新mount
    [root@desktop61 etc]# mount
    /dev/mapper/vol0-root on / type ext4 (rw)
    proc on /proc type proc (rw)
    sysfs on /sys type sysfs (rw)
    devpts on /dev/pts type devpts (rw,gid=5,mode=620)
    tmpfs on /dev/shm type tmpfs (rw,rootcontext="system_u:object_r:tmpfs_t:s0")
    /dev/sda1 on /boot type ext4 (rw)
    /dev/mapper/vol0-home on /home type ext4 (rw)
    /dev/sdb5 on /tmp/sdb5 type ext4 (rw)
    /dev/sdb6 on /tmp/sdb6 type ext4 (rw)
    none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
    vmware-vmblock on /var/run/vmblock-fuse type fuse.vmware-vmblock (rw,nosuid,nodev,default_permissions,allow_other)
    sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
    gvfs-fuse-daemon on /root/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev)
    /dev/sdc5 on /mnt/sdc5 type ext4 (rw)
    /dev/sdc6 on /mnt/sdc6 type ext4 (rw)
    [root@desktop61 etc]#

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  • 原文地址:https://www.cnblogs.com/w-wfy/p/8870755.html
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