Extend Partition and Linux LVM on a virtual Server
 

Dear All,

I installed CentOS 5.7 from scratch on a virtual server with Disk Space ~ 20 GB.

It looked like::
# fdisk -l /dev/sda

Disk /dev/sda: ~ 20 GB,
255 heads, 63 sectors/track, 3263 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 268 2048287+ 82 Linux swap / Solaris
/dev/sda3 269 2610 18812115 8e Linux LVM

and

# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
18219452 2112220 15166792 13% /
/dev/sda1 101086 12960 82907 14% /boot
tmpfs 9239900 0 9239900 0% /dev/shm



Now the Disk (Space) was extended to ~ 26GB.
I created now a new partition with the fdisk command (fdisk /dev/sda) and now it looks like:
# fdisk -l /dev/sda

Disk /dev/sda: 26.8 GB, 26843545600 bytes
255 heads, 63 sectors/track, 3263 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 268 2048287+ 82 Linux swap / Solaris
/dev/sda3 269 2610 18812115 8e Linux LVM
/dev/sda4 2611 3263 5245222+ 5 Extended
/dev/sda5 2611 3263 5245191 83 Linux

My first question - /dev/sda4 and /dev/sda5 is more or less the same !!??

What I want to do now:
Increase /dev/sda3 (from 269 to 3263 resp. from 20 GB to 26 GB), which probably means to delete /dev/sda4 and /dev/sda5 (??).
Additionally/afterwards I want to increase the Logival Volume.


I would appreciate if somebody can tell me how to do it - as I'm not so familiar with this stuff please give the neccessary commands (as much detailed as possible).
I've tried a a pvresize and lvextend (""pvresize -v /dev/sda3"" and ""lvextend -l 574 /dev/mapper/VolGroup00-LogVol00""), but this was probably bullshit.

Thanks
Stefan

Not sure if you need the following information:
# pvdisplay /dev/sda3
/dev/hdc: open failed: No medium found
--- Physical volume ---
PV Name /dev/sda3
VG Name VolGroup00
PV Size 17.94 GB / not usable 3.21 MB
Allocatable yes (but full)
PE Size (KByte) 32768
Total PE 574
Free PE 0
Allocated PE 574
PV UUID vMZrO2-kCRT-nTjU-Gzgn-WI3m-qZON-VohByg




# vgdisplay -v
Finding all volume groups
/dev/hdc: open failed: No medium found
Finding volume group "VolGroup00"
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 17.94 GB
PE Size 32.00 MB
Total PE 574
Alloc PE / Size 574 / 17.94 GB
Free PE / Size 0 / 0
VG UUID dGXirw-lvMH-Py00-PqcR-4oUt-13Fo-SA9QbS

--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID o1Bgui-kLxB-dyHK-ecH2-v1Ss-QVCc-bduCPR
LV Write Access read/write
LV Status available
# open 1
LV Size 17.94 GB
Current LE 574
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0

--- Physical volumes ---
PV Name /dev/sda3
PV UUID vMZrO2-kCRT-nTjU-Gzgn-WI3m-qZON-VohByg
PV Status allocatable
Total PE / Free PE 574 / 0




# lvdisplay /dev/mapper/VolGroup00-LogVol00
/dev/hdc: open failed: No medium found
--- Logical volume ---
LV Name /dev/VolGroup00/LogVol00
VG Name VolGroup00
LV UUID o1Bgui-kLxB-dyHK-ecH2-v1Ss-QVCc-bduCPR
LV Write Access read/write
LV Status available
# open 1
LV Size 17.94 GB
Current LE 574
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0

Please do not post questions more than once. See reply in your other thread.