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如何挂载该逻辑卷

tag-icon • tag-icon centos6 lvm mount disk-volume
如何挂载该逻辑卷

我想挂载 /dev/sda2。我该怎么做？

以下是 fdisk、df、lvmdiskscan、lvdisplay、vgdisplay 和 lvscan 的输出。

[root@IctThtSoluti-06 ~]# fdisk -l

Disk /dev/sda: 1030.8 GB, 1030792151040 bytes
255 heads, 63 sectors/track, 125320 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00034e05

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64        1306     9972736   8e  Linux LVM

Disk /dev/mapper/vg_centos6264bit-lv_root: 8095 MB, 8095006720 bytes
255 heads, 63 sectors/track, 984 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_centos6264bit-lv_swap: 2113 MB, 2113929216 bytes
255 heads, 63 sectors/track, 257 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

[root@IctThtSoluti-06 ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_centos6264bit-lv_root
                      7.3G  988M  6.0G  14% /
tmpfs                 3.9G     0  3.9G   0% /dev/shm
/dev/sda1             477M   64M  389M  15% /boot



[root@IctThtSoluti-06 ~]# lvmdiskscan
  /dev/ram0                     [      16.00 MiB]
  /dev/root                     [       7.54 GiB]
  /dev/ram1                     [      16.00 MiB]
  /dev/sda1                     [     500.00 MiB]
  /dev/vg_centos6264bit/lv_swap [       1.97 GiB]
  /dev/ram2                     [      16.00 MiB]
  /dev/sda2                     [       9.51 GiB] LVM physical volume
  /dev/ram3                     [      16.00 MiB]
  /dev/ram4                     [      16.00 MiB]
  /dev/ram5                     [      16.00 MiB]
  /dev/ram6                     [      16.00 MiB]
  /dev/ram7                     [      16.00 MiB]
  /dev/ram8                     [      16.00 MiB]
  /dev/ram9                     [      16.00 MiB]
  /dev/ram10                    [      16.00 MiB]
  /dev/ram11                    [      16.00 MiB]
  /dev/ram12                    [      16.00 MiB]
  /dev/ram13                    [      16.00 MiB]
  /dev/ram14                    [      16.00 MiB]
  /dev/ram15                    [      16.00 MiB]
  2 disks
  17 partitions
  0 LVM physical volume whole disks
  1 LVM physical volume


[root@IctThtSoluti-06 ~]# lvdisplay
  --- Logical volume ---
  LV Path                /dev/vg_centos6264bit/lv_root
  LV Name                lv_root
  VG Name                vg_centos6264bit
  LV UUID                GuVsuq-Q0II-gcjX-6Pdp-7azY-FPub-25YWYR
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                7.54 GiB
  Current LE             1930
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Path                /dev/vg_centos6264bit/lv_swap
  LV Name                lv_swap
  VG Name                vg_centos6264bit
  LV UUID                Ukf2if-IlyB-95nM-8Gdq-XXI8-PcKT-fddsqR
  LV Write Access        read/write
  LV Creation host, time ,
  LV Status              available
  # open                 1
  LV Size                1.97 GiB
  Current LE             504
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1



[root@IctThtSoluti-06 ~]# vgdisplay
  --- Volume group ---
  VG Name               vg_centos6264bit
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               9.51 GiB
  PE Size               4.00 MiB
  Total PE              2434
  Alloc PE / Size       2434 / 9.51 GiB
  Free  PE / Size       0 / 0
  VG UUID               gG9yNW-Jq57-pFkY-oydY-5R4h-oHS0-W7QoWO


[root@IctThtSoluti-06 ~]# lvscan
  ACTIVE            '/dev/vg_centos6264bit/lv_root' [7.54 GiB] inherit
  ACTIVE            '/dev/vg_centos6264bit/lv_swap' [1.97 GiB] inherit

答案1

无法/dev/sda2直接挂载。它由逻辑卷管理器使用，并且现有的逻辑卷已挂载。

扩展评论：

目前，您的 1TB 分区中仅包含 10GB。

要扩展根卷，有两种方法：

  1. 扩展物理分区 (/dev/sda2) 的大小（使用 fdisk 和 pvresize）
  2. 创建一个新的分区（/dev/sda3）并将其添加到您的卷组（使用 fdisk、pvcreate 和 vgextend）

增加卷组的大小之后，您可以扩展逻辑卷和其上的文件系统的大小。

您想做什么基本上是您的选择，但请记住，您不能在磁盘上创建无限数量的分区。

我不会描述这些过程，因为我不是这方面的专家，而且这两种可能性都已经被比我更适合的人详细描述过了。这方面的教程可以很容易地在互联网上找到。

答案2

1) 创建新的物理分区 /dev/sda3（并在其上设置 lvm 标志）。在parted

mkpart primary 0% 100%
set 3 lvm on
q

2）扩展现有卷组以包含新的 /dev/sda3 分区

VG_NAME=`vgdisplay  | grep "VG Name"  | awk '{print $3}'`
vgextend $VG_NAME /dev/sda3

3）创建逻辑卷（将 x 替换为 GB 大小）

LV_NAME=/dev/vg_centos6264bit/lv_data
lvcreate -L xG -n $LV_NAME $VG_NAME

4）在逻辑卷上创建文件系统

mkfs.ext4 $LV_NAME

5）挂载逻辑卷

mkdir /data
mount $LV_NAME /data

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