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Old 05-12-2009, 06:57 AM   #1
bondoq
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LVM Issue


hi all,


i have a question .

can i split a volume groupt and make it unpartitioned space ?

i have a /dev/sda5 as vg1 with total size 131 GB and used 78 GB
and free space 53 GB i want to take the free space on this vg and make it unpartitioned space is there a solution for this ‏‪(01:42:06 PM)‬‏‬

and all info are

lvscan: ACTIVE '/dev/VolGroup00/LogVol00' [78.12 GB] inherit

vgscan: Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2

pvscan: PV /dev/sda5 VG VolGroup00 lvm2 [131.84 GB / 53.72 GB free]
Total: 1 [131.84 GB] / in use: 1 [131.84 GB] / in no VG: 0 [0 ]

vgdisplay:

VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
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 131.84 GB
PE Size 32.00 MB
Total PE 4219
Alloc PE / Size 2500 / 78.12 GB
Free PE / Size 1719 / 53.72 GB

VG UUID kCp76J-ENtZ-wDws-CHT3-Ql83-44vi-bOJA7H


Thanks in advance
 
Old 05-12-2009, 07:02 AM   #2
Dudydoo
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First shrink the VG with vgresize, then shrink the PV with pvresize, then I'd use something like (g)parted to reduce the partition. You can then create /dev/sda6 ...

Quote:
man vgresize
man pvresize
 
Old 05-12-2009, 07:05 AM   #3
Dudydoo
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This is also a benefit of virtual machines. You can test these things out by adding/removing virtual disks and experimenting before doing them on production machines.
 
Old 05-12-2009, 07:39 AM   #4
bondoq
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thanks for help i tried pvresize but it gives this error

i typed this command :

pvresize --setphysicalvolumesize 40G /dev/sda5


the error:

cannot resize to 31 extents as 2500 are allocated.
 
Old 05-12-2009, 09:16 AM   #5
Dudydoo
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You have 78GB allocated, so you cannot reduce it do 40GB. Try 80GB.
 
Old 05-12-2009, 09:42 AM   #6
bondoq
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i want to reduce the PV from 131 GB to 70 GB to take the rest of the space and make it new partition

did you get what i mean ?


thanks in advance
 
Old 05-12-2009, 09:53 AM   #7
Dudydoo
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Yes I understood you AFAIK.

Quote:
i have a /dev/sda5 as vg1 with total size 131 GB and used 78 GB
and free space 53 GB i want to take the free space on this vg and make it unpartitioned space is there a solution for this ‏‪
But you typed:

Quote:
pvresize --setphysicalvolumesize 40G /dev/sda5
Which surely should be:

Code:
pvresize --setphysicalvolumesize 80G /dev/sda5
 
Old 05-12-2009, 09:59 AM   #8
bondoq
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so if i resized it to 80 GB can i use 60 GB and make it a new partition ?
 
Old 05-12-2009, 10:35 AM   #9
Dudydoo
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Well about 50 GB - yes.
 
  


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