/var full, how to use lvextend ?

Posted on 2009-12-25
Medium Priority
Last Modified: 2013-12-06

We run Postfix and our /var is full :
/var Linux Native Filesystem (ext3) LVM VG sysvg, LV var 100%

We tried the lvextend command with something like :
lvextend -L+1G /var
but we get the error message :
"/var": Invalid path for Logical Volume
Any Idea ?
Question by:javilmer
  • 4
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Expert Comment

ID: 26122222
lvextend -L +1024 /dev/vg01/lvol10 /var

/dev/vg01/lvol10 is your physical volume

Author Comment

ID: 26122313
I got an error message :

Volume group "vg01" not found
  Volume group vg01 doesn't exist


Expert Comment

ID: 26122321
first identify your volume group
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LVL 29

Expert Comment

by:Michael Worsham
ID: 26122342
Please post a copy of the following: 'lvscan' & 'vgdisplay'


Author Comment

ID: 26122387
> lvscan
  ACTIVE            '/dev/sysvg/root' [3.00 GB] inherit
  ACTIVE            '/dev/sysvg/var' [4.00 GB] inherit
  ACTIVE            '/dev/sysvg/data' [14.88 GB] inherit
  ACTIVE            '/dev/sysvg/usr' [4.00 GB] inherit
  ACTIVE            '/dev/sysvg/swap' [2.00 GB] inherit
> vgdisplay
  --- Volume group ---
  VG Name               sysvg
  System ID            
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  6
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                5
  Open LV               5
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               33.78 GB
  PE Size               32.00 MB
  Total PE              1081
  Alloc PE / Size       892 / 27.88 GB
  Free  PE / Size       189 / 5.91 GB
  VG UUID               not1mN-b5dm-b4nB-4x4g-M5DJ-fTsy-T2u1rh

LVL 29

Accepted Solution

Michael Worsham earned 1000 total points
ID: 26123097
The 'sysvg' is the LVM volume group name.

To extend the 'var' partition, do this:

'lvextend -L +1G /dev/sysvg/var'
'resize2fs /dev/sysvg/var'


Author Comment

ID: 26123141
OK, I'll try, no danger to loose some datas ?
LVL 29

Expert Comment

by:Michael Worsham
ID: 26124873
Nope. 'lvextend' only extends the logical volume limits.

However, 'lvreduce' can (and usually does) corrupt data as it is used to reduce the logical volume limits.

Author Closing Comment

ID: 31669928
Thank you, great help, and happy new year !!!

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