An operating system has been installed on a server. after the cabinet is connected, you need to create a logical volume for system mounting. The entire disk is used as a partition, and the CentOS6.3 file system has a maximum of 16 T limit. First clear partition table information on the disk: [root @ SD-H0-ATTACH-G0S0 ~] # Ddif/dev/zeroof/dev/sdabs512count11 + 0 recor
An operating system has been installed on a server. after the cabinet is connected, you need to create a logical volume for system mounting. The entire disk is used as a partition, and the CentOS6.3 file system has a maximum of 16 T limit.
First, clear the partition table information on the disk:
[Root @ SD-H0-ATTACH-G0S0 ~] # Dd if =/dev/zero of =/dev/sda bs = 512 count = 1
1 + 0 records in
1 + 0 records out
512 bytes (512 B) copied, 0.000446406 s, 1.1 MB/s
Create physical volume
[Root @ SD-H0-ATTACH-G0S0 ~] # Pvcreate/dev/sda
Writing physical volume data to disk "/dev/sda"
Physical volume "/dev/sda" successfully created
[Root @ SD-H0-ATTACH-G0S0 ~] # Pvdisplay
--- Physical volume ---
PV Name/dev/sdb2
VG Name vg _
Lvs2
PV Size 1.09 TiB/not usable 3.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 285762
Free PE 0
Allocated PE 285762.
Pv uuid 93Hrn1-R8m4-fv8S-S7G6-3vpa-N4EH-GOevM9
--- Physical volume ---
PV Name/dev/sda
VG Name vg _
Mongodb
PV Size 18.19 TiB/not usable 4.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 4767999
Free PE 4767999
Allocated PE 0
Pvuuid nUhMM9-S51t-nlKz-wgVS-nkCh-sgXD-Qr4bZv
Create a physical volume Group
[Root @ SD-H0-ATTACH-G0S0 ~] # Vgcreate vg_mongodb/dev/sda
Volume group "vg_mongodb" successfully created
[Root @ SD-H0-ATTACH-G0S0 ~] # Vgs
VG # PV # LV # SN Attr VSize VFree
Vg_lvs2 1 2 0 wz -- n-1.09 t 0
Vg_mongodb 1 0 0 wz -- n-18.19 t 18.19 t
Create logical volume
[Root @ SD-H0-ATTACH-G0S0 ~] # Lvcreate-l 16 TB-n lv_mongodb vg_mongodb
Logical volume "lv_mongodb" created
Format a file system
[Root @ SD-H0-ATTACH-G0S0 ~] # Mkfs. ext4/dev/vg_mongodb/lv_mongodb
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
1073741824 inodes, 4294967295 blocks
214748364 blocks (5.00%) reserved for the super user
First data block = 0
131072 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768,983 04, 163840,229 376, 294912,819 200, 884736,160 5632, 2654208,
4096000,796 2624, 11239424,204 80000, 23887872,716 63616, 78675968,
102400000,214 990848, 512000000,550 73 1776, 644972544,193 4917632,
2560000000,385 5122432
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 22 mounts or
180 days, whichever comes first. Use tune2fs-c or-I to override.
Mount and use
[Root @ SD-H0-ATTACH-G0S0 ~] # Mount/dev/vg_mongodb/lv_mongodb/dragon/data
[Root @ SD-H0-ATTACH-G0S0 ~] #
[Root @ SD-H0-ATTACH-G0S0 ~] # Df-h
Filesystem Size Used Avail Use % Mounted on
/Dev/mapper/vg_lvs2-lv_root
1.1 T 2.5G 1.1 T 1%/
Tmpfs 7.8G 0 7.8G 0%/dev/shm
/Dev/sdb1 485 M 58 M 402 M 13%/boot
/Dev/mapper/vg_mongodb-lv_mongodb
16 T 129 M 15 T 1%/dragon/data
