Logical Volume Manager what is often referred to facilities with LVM is Linux operating system to create a virtual partition, the virtual partition that we can combine multiple hard drives into 1 partition that sangaaaaat besaaar, what can change the partition size without deleting the file contents of the partition (I volume plus a size not less) when the system is still running.
Generally this is used for LVM memartisi hardisk for desktop server but also gpp: P. For example we have 2 hard drives which each 111GB hard drive volume so sizenya total 222GB .. we are a LVM partition :
# Create a LVM physical volume nggabungin hardisk first two ...
filserver @ user: ~ $ sudo pvcreate /dev/hdc1/dev/hdd1
Password:
Physical volume "/dev/hdc1" successfully created
Physical volume "/dev/hdd1" successfully created
# To see the results
filserver @ user: ~ $ sudo pvdisplay
- NEW Physical volume --
PV Name /dev/evms/hdc1
VG Name
PV Size 111.79 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 1jjY6f-addr-9zLO-ynrW-SLUO-csYc-wtGFGc
- NEW Physical volume --
PV Name /dev/evms/hdd1
VG Name
PV Size 111.79 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID 0jGeBq-WHB0-OKuG-MXoJ-Obty-IkJd-p15fqV
# Create Volume Group from the combination of LVM drive with the name fileserver
filserver @ user: ~ $ sudo vgcreate fileserver /dev/evms/hdc1/dev/evms/hdd1
Volume group "fileserver" successfully created
# See VolumeGroup made earlier that
filserver @ user: ~ $ sudo vgdisplay
- Volume groups --
VG Name fileserver
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 223.57 GB
PE Size 4:00 MB
Total PE 57234
Alloc PE/Size 0/0
Free PE/Size 57234/223.57 GB
VG UUID 32MYKU-I1w2-nj9l-JPlB-jTWQ-d31q-GS2ADv
# Create Logical Volume
filserver @ user: ~ $ sudo lvcreate-name-size 10G Supervisor fileserver
Password:
Logical volume "Reference" created
filserver @ user: ~ $ sudo lvcreate-name IT-size 70G fileserver
Logical volume "IT" created
filserver @ user: ~ $ sudo lvcreate-name Financial-size 10G fileserver
Logical volume "Financial" created
filserver @ user: ~ $ sudo lvcreate-name-size 10G Manager fileserver
Logical volume "Teaching" created
filserver @ user: ~ $ sudo lvcreate-name staff-size 30G fileserver
Logical volume "Lecturer" created
filserver @ user: ~ $ sudo lvcreate-name-size 10G Public fileserver
Logical volume "Public" created
filserver @ user: ~ $ sudo lvcreate-name-size 50g Multimedia fileserver
Logical volume "Multimedia" created
# to see the results of the Logical volume
filserver @ user: ~ $ sudo lvdisplay
- Logical volume --
LV Name /dev/fileserver/Supervisor
VG Name fileserver
LV UUID eoiCQr-pjoJ-4tt0-J12I-fNv3-yDE1-gftJDQ
LV Write Access read/write
LV Status available
# Open 0
LV Size GB 10:00
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:5
- Logical volume --
LV Name /dev/fileserver/IT
VG Name fileserver
LV UUID LqBSv2-PIFO-ASqr-EcuK-0km2-BgfS-4YSnAC
LV Write Access read/write
LV Status available
# Open 0
LV Size 70.00 GB
Current LE 17920
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:6
- Logical volume --
LV Name /dev/fileserver/Finance
VG Name fileserver
LV UUID zQSVhu-lfxV-iDiF-IA6n-dLTB-yLu4-gfqkGf
LV Write Access read/write
LV Status available
# Open 0
LV Size GB 10:00
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:7
- Logical volume --
LV Name /dev/fileserver/Manager
VG Name fileserver
LV UUID qkqrgk-xVsn-wijl-W6s9-8WSB-iZHn-T3MgCG
LV Write Access read/write
LV Status available
# Open 0
LV Size GB 10:00
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:8
- Logical volume --
LV Name /dev/fileserver/Employee
VG Name fileserver
LV UUID BSuQb8-bipx-5HaB-v73F-kNb1-e7HK-0q1Tr2
LV Write Access read/write
LV Status available
# Open 0
LV Size 30.00 GB
Current LE 7680
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:9
- Logical volume --
LV Name /dev/fileserver/Public
VG Name fileserver
LV UUID rvMWgd-W8CN-keuX-mDg2-pPda-jsjA-miKdgh
LV Write Access read/write
LV Status available
# Open 0
LV Size GB 10:00
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors 0
253:10 block device
- Logical volume --
LV Name /dev/fileserver/Multimedia
VG Name fileserver
LV UUID pUJ8UJ-S99V-gtvJ-fFyD-Felw-PrCc-fQ8VjA
LV Write Access read/write
LV Status available
# Open 0
LV Size 50.00 GB
Current LE 12800
Segments 2
Allocation inherit
Read ahead sectors 0
253:11 block device
# to delete logical volume that has been made
filserver @ user: ~ $ sudo lvremove "LV Name"
# To add a logical volume partition mjd 1.5GB
filserver @ user: ~ $ sudo lvextend-L 1.5GB "LV Name"
# To reduce the volume of logical partitions mjd 1.5GB
filserver @ user: ~ $ sudo lvreduce-L 1.5GB "LV Name"
# format the partition to LVM to ext3
filserver @ user: ~ $ sudo mkfs.ext3 "LV Name"
# mount create a partition that I made to the system after formatted to ext3
filserver @ user: ~ $ sudo mount "LV Name" /media/disk/
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