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Extend a linux Volume

I have two main partitions as below;

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
100G 94G 1009M 99% /
/dev/cciss/c0d0p1 99M 13M 82M 14% /boot
tmpfs 16G 0 16G 0% /dev/shm
/dev/cciss/c0d1 404G 236G 149G 62% /DataDrive

I need to extend the size of the root partition "/" by about 60Gb to accommodate the DB size. Am not sure how to do this without losing or corrupting the data. I have seen some documentation that show with LVM, this is easy to do. But I need a step by step process with no risk.

Please help.

Kerem ERSOY

Hi,

It is easy:
- Just create another disk over your RAID (say /dev/cciss/c0d0p4)
- Execute pvcreate : pvcreate /dev/cciss/c0d0p4
- Execute vgextend :vgextend /dev/VolGroup00 /dev/cciss/c0d0p4
- Execute lvextend (assuming the new volume is 200Gig) : lvextend +L200G /dev/VolGroup00/LogVol00
- Now you can extend the filesystem using resize2fs : resize2fs /dev/VolGroup00/LogVol00

Here are some documentation:
http://www.turnkeylinux.org/blog/extending-lvm
http://www.redhat.com/magazine/009jul05/features/lvm2/

Cheers,
K.

Papertrip

For future reference, putting your entire disk in the root partition is bad practice, and is just asking for trouble... especially if you have a database running on that machine.

upanwar

Could you please send me output of below given commands.

pvscan
fdisk -l

and also let me know if you can put a new disk into the system or you want to use the existing disks to extented the / partision.

Regards
Umesh Panwar

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arnold

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Julian Parker

I would avoid increasing the size of the root partition and do as arnold says and follow arnolds instructions to create a separate partition for the db data, you can use the du command to give you an idea of how large the partition needs to be.

eg/
du -sm /var

J