Linux挂载逻辑卷

df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        40G   16G   22G  42% /
devtmpfs         16G     0   16G   0% /dev
tmpfs            16G   40K   16G   1% /dev/shm
tmpfs            16G  1.4M   16G   1% /run
tmpfs            16G     0   16G   0% /sys/fs/cgroup
tmpfs           3.2G   48K  3.2G   1% /run/user/0
tmpfs           3.2G     0  3.2G   0% /run/user/1000

fdisk -l

Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 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 label type: dos
Disk identifier: 0x000b1b45

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *        2048    83875364    41936658+  83  Linux

Disk /dev/vdb: 536.9 GB, 536870912000 bytes, 1048576000 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 /dev/vdc: 536.9 GB, 536870912000 bytes, 1048576000 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 /dev/vdd: 536.9 GB, 536870912000 bytes, 1048576000 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

fdisk /dev/vdb
n # 1
t # 8e          
w               #fdisk -l 看到device boot:/dev/vdb1

fdisk /dev/vdc
n # 1
t # 8e          
w               #fdisk -l 看到device boot:/dev/vdc1

Command (m for help): n 1
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 (2048-1048575999, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-1048575999, default 1048575999):
Using default value 1048575999
Partition 1 of type Linux and of size 500 GiB is set

Command (m for help): t 8e
Selected partition 1
Hex code (type L to list all codes):
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'

Command (m for help): w
The partition table has been altered!

pvcreate /dev/vdb1
  Physical volume "/dev/vdb1" successfully created.
  
pvcreate /dev/vdc1
  Physical volume "/dev/vdc1" successfully created.
  
pvdisplay
  "/dev/vdc1" is a new physical volume of "<500.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/vdc1
  VG Name
  PV Size               <500.00 GiB
  Allocatable           NO
  PE Size               0
  Total PE              0
  Free PE               0
  Allocated PE          0

  "/dev/vdb1" is a new physical volume of "<500.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/vdb1
  VG Name
  PV Size               <500.00 GiB
  Allocatable           NO
  PE Size               0
  Total PE              0
  Free PE               0
  Allocated PE          0

vgcreate vgdata /dev/vdb1 /dev/vdc1
  Volume group "vgdata" successfully created
  
vgdisplay
  --- Volume group ---
  VG Name               vgdata
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               999.99 GiB
  PE Size               4.00 MiB
  Total PE              255998
  Alloc PE / Size       0 / 0
  Free  PE / Size       255998 / 999.99 GiB

lvcreate -l 100%VG vgdata -n lvdata
  Logical volume "lvdata" created.
  
lvdisplay
  --- Logical volume ---
  LV Path                /dev/vgdata/lvdata
  LV Name                lvdata
  VG Name                vgdata
  LV UUID                dmfqds-IiEY-l3JV-cYQj-KAOM-hcFu-30sh8O
  LV Write Access        read/write
  LV Creation host, time iZbp1d4tisi44j6vxze02fZ, 2019-05-29 19:56:14 +0800
  LV Status              available
  # open                 0
  LV Size                999.99 GiB
  Current LE             255998
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     8192
  Block device           252:0
  
ll /dev/vgdata/lvdata
lrwxrwxrwx 1 root root 7 May 29 19:56 /dev/vgdata/lvdata -> ../dm-0

mkfs.ext4 /dev/vgdata/lvdata

mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
65536000 inodes, 262141952 blocks
13107097 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2409627648
8000 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, 1605632, 2654208,
	4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
	102400000, 214990848

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

mkdir /fdisk1
mount /dev/vgdata/lvdata /fdisk1/
echo "/dev/vgdata/lvdata  /fdisk1    ext4    defaults 0 0" >> /etc/fstab

df -h

Filesystem                 Size  Used Avail Use% Mounted on

...
/dev/mapper/vgdata-lvdata  985G   77M  935G   1% /fdisk1
...