[linux-lvm] lvextend advice ?

Steve Goryl GorylS at wlu.edu
Fri Sep 10 21:58:31 UTC 2010

I have an old but critical server (Monarch brand) that has somehow run out of space in /......
Also the boot partition shows 19% on an fsck at startup. No other known issues..  (age)

The kernel is 2.6.9-42.0.3ELsmp x86 64bit and shows the following parameters:

Filesystem    Type    Size  Used Avail Use% Mounted on
              ext3     52G   52G     0 100% /
/dev/sda1     ext3     99M   23M   72M  25% /boot
none         tmpfs    2.6G     0  2.6G   0% /dev/shm
              ext3    193G  117G   66G  64% /exports/home
              ext3     49G  3.2G   43G   7% /exports/local
              ext3     20G  4.7G   14G  26% /var
              ext3     21G  3.5G   17G  18% /opt
              ext3     40G  3.2G   35G   9% /exports/vmware

#lvm lvs
LV       VG         Attr   LSize   Origin Snap%  Move Log Copy% 
  LogVol00 VolGroup00 -wi-ao  51.88G                              
  LogVol01 VolGroup00 -wi-ao  19.53G                              
  LogVol02 VolGroup00 -wi-ao  48.84G                              
  LogVol03 VolGroup00 -wi-ao 195.31G                              
  LogVol04 VolGroup00 -wi-ao  21.12G                              
  swap1    VolGroup00 -wi-ao   1.97G                              
  swap2    VolGroup00 -wi-ao   1.97G                              
  swap3    VolGroup00 -wi-ao   1.97G                              
  swap4    VolGroup00 -wi-ao   1.97G                              
  vmware   VolGroup00 -wi-ao  40.00G         

ACTIVE            '/dev/VolGroup00/LogVol00' [51.88 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol03' [195.31 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol02' [48.84 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol01' [19.53 GB] inherit
  ACTIVE            '/dev/VolGroup00/swap4' [1.97 GB] inherit
  ACTIVE            '/dev/VolGroup00/swap3' [1.97 GB] inherit
  ACTIVE            '/dev/VolGroup00/swap2' [1.97 GB] inherit
  ACTIVE            '/dev/VolGroup00/swap1' [1.97 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol04' [21.12 GB] inherit
  ACTIVE            '/dev/VolGroup00/vmware' [40.00 GB] inherit

lvm2 format     version  2.02.21-RHEL4
driver 4.5.0
kernel is 2.6.9-42.0.3ELsmp x86 64bit

vgdisplay -v
    Finding all volume groups
    Finding volume group "VolGroup00"
  --- Volume group ---
  VG Name               VolGroup00
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  16
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                10
  Open LV               10
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               465.53 GB
  PE Size               32.00 MB
  Total PE              14897
  Alloc PE / Size       12306 / 384.56 GB
  Free  PE / Size       2591 / 80.97 GB
  VG UUID               6E83RZ-Beww-DHFv-sDRh-ssZd-F1QJ-K2ZLAA
**** My question is due to the age of the kernel, should the lvextend on LogVol00 be done from the "rescue mode"
OR could it be done with limited services running or in say run level 3? ANY OTHER obvious potential issues?

(Due to custom kernel modules it would NOT be prudent to upgrade the box at this time.)

THANKS in advance for your TIME on thoughts, concerns or questions..

Steve Goryl
Everest Expedition Leader 1994

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