LVM Resizing in RHEL6.1

I plan to install an Oracle database for the system and find that the disk space is insufficient. When installing the system, I select automatic partitioning, and the system will automatically partition by LVM. To ensure later availability of the system, we recommend that LVM be used for installation of all new systems, and I plan to do the same for later production devices. Disk status before resizing [root @ localhost ~] # Df-H File System & nbs I plan to install an O for the SystemRacleAnd the disk space is insufficient. When installing the system, I select automatic partitioning, and the system will automaticallyLVM. To ensure later availability of the system, it is recommended that all new systems be installedLVMAnd then I plan to do the same for production devices.

Disk status before resizing

[Root @ localhost ~] # Df-h

File SystemCapacity Used AvailableUsed%Mount point

/Dev/mapper/VolGroup-lv_root5.3 GB2.5 GB2.6 GB50%/

Tmpfs538 M0538 M0%/dev/shm

/Dev/sda1485 M30 M430 M7%/boot

[Root @ localhost ~] # Fdisk-l

Disk/dev/sda: 8589 MB, 8589934592 bytes

...............

Device BootStartEndBlocksIdSystem

/Dev/sda1*16451200083Linux

Partition 1 does not end on cylinder boundary.

/Dev/sda264104578755848eLinux LVM

Disk/dev/mapper/VolGroup-lv_root: 5779 MB, 5779750912 bytes

........

Disk/dev/mapper/VolGroup-lv_swap: 2281 MB, 2281701376 bytes

.........

The expansion scheme is as follows:

1Add1Items5GTo/

2Add1Items10GTo/Oracle

(1)InVMAdd one15GDisk

After restart# Fdisk-lWe can see that the new disk has been recognized.

Disk/dev/sdb: 16.1 GB, 16106127360 bytes

............................

Disk/dev/sdb doesn' t contain a valid partition table

 

(2) create a physical volume(PV)

Pvcreate/dev/sdb

View SystemPV:

[Root @ localhost ~] # Pvdisplay

--- Physical volume ---

PV Name/Dev/sda2//On the original Hard DiskPV

VG NameVolGroup

PV Size7.51 GiB/not usable 3.00 MiB

AllocatableYes (but full)

PE Size4.00 MiB

Total PE1922

Free PE0

Allocated PE1922

PV UUIDSGH1dY-4tp2-Nr1a-w93Z-V4LA-pQBh-VGzzTH

  "/Dev/sdb" is a new physical volume of "15.00 GiB"

--- NEW Physical volume ---

PV Name/Dev/sdb

VG Name //The createdPVOfVG nameIt is empty. The next step isPVJoinVG

PV Size15.00 GiB

AllocatableNO

PE Size0

Total PE0

Free PE0

Allocated PE0

PV UUID8TZUlz-YyUp-RBvf-lSzm-7MgG-DSZS-qNqX1Z

 

View OriginalVGStatus

[Root @ localhost ~] # Vgdisplay

--- Volume group ---

VG NameVolGroup//Note that this name is recorded.PvAdd the specified name

System ID

FormatLvm2

Metadata Areas1

Metadata Sequence No3

VG Access Read/write

VG StatusResizable

MAX LV0

Cur LV2

Open LV2

Max PV0

Cur PV1

Act PV1

VG Size7.51 GiB

PE Size4.00 MiB

Total PE1922

AllocPE/Size1922/7 .51 GiB

FreePE/Size0/0

VG UUIDFnUsmX-s284-GeRK-hJNJ-BbIG-Vpe7-OuFZE1