Shulou(Shulou.com)06/02 Report--

Recently, I want to flexibly manage the local hard disk of the server through LVM. The specific questions are as follows: [root@localhost ~] # pvcreate / dev/sdb

Device / dev/sdb not found (or ignored by filtering).

[root@localhost ~] # lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

Nvme0n1 259:0 0 2.9T 0 disk

Sda 8:0 0 744.1G 0 disk

├─ sda1 8:1 0 5G 0 part / boot

└─ sda2 8:2 0 739.1G 0 part

├─ VolGroup-LogVol01 (dm-0) 253 dm-0 0 0 390.6 G 0 lvm /

└─ VolGroup-LogVol00 (dm-1) 253 dm-1 1 0 260G 0 lvm [SWAP]

Sdb 8:16 0 21.8T 0 disk

[root@localhost soft] # fdisk-l / dev/sdb

WARNING: GPT (GUID Partition Table) detected on'/ devamp sdbstores! The util fdisk doesn't support GPT. Use GNU Parted.

Disk / dev/sdb: 24000.0 GB, 23999996231680 bytes

255 heads, 63 sectors/track, 2917833 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Device Boot Start End Blocks Id System

/ dev/sdb1 1 267350 2147483647 + ee GPT

From the above, you can see that / dev/sdb adds a disk partition of sdb1 by default, and it is a GPT partition; I don't want to

Because it is very inconvenient to manage GPT, you can do the following operations to solve the problem through some information:

[root@localhost soft] # fdisk / dev/sdb

WARNING: GPT (GUID Partition Table) detected on'/ devamp sdbstores! The util fdisk doesn't support GPT. Use GNU Parted.

WARNING: The size of this disk is 24.0 TB (23999996231680 bytes).

DOS partition table format can not be used on drives for volumes

Larger than (2199023255040 bytes) for 512-byte sectors. Use parted (1) and GUID

Partition table format (GPT).

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to

Switch off the mode (command 'c') and change display units to

Sectors (command'u').

Command (m for help): P

Disk / dev/sdb: 24000.0 GB, 23999996231680 bytes

255 heads, 63 sectors/track, 2917833 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Device Boot Start End Blocks Id System

/ dev/sdb1 1 267350 2147483647 + ee GPT

Command (m for help): d

Selected partition 1

Command (m for help): P

Disk / dev/sdb: 24000.0 GB, 23999996231680 bytes

255 heads, 63 sectors/track, 2917833 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Device Boot Start End Blocks Id System

Command (m for help): W

The partition table has been altered!

Calling ioctl () to re-read partition table.

Syncing disks.

As you can see above, delete the partition corresponding to its disk, as long as there is no data (remember)

[root@localhost soft] # pvcreate / dev/sdb

Physical volume "/ dev/sdb" successfully created

[root@localhost soft] # pvdisplay

"/ dev/sdb" is a new physical volume of "21.83 TiB"

-NEW Physical volume

PV Name / dev/sdb

VG Name

PV Size 21.83 TiB

Allocatable NO

PE Size 0

Total PE 0

Free PE 0

Allocated PE 0

The PV was created successfully, and then the management can be flexibly extended with LVM.

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