topic Re: Regarding disk partitioning and lvols in Operating System - Linux

Regarding disk partitioning and lvols

sanwin — Wed, 19 Nov 2008 13:23:06 GMT

Hi,
During linux installation i have not partitioned the disk and it got configured like this.

[root@ ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
66815628 2774296 60592500 5% /
/dev/cciss/c0d0p1 98747 13264 80384 15% /boot
tmpfs 970636 0 970636 0% /dev/shm

Now i want to create separate filesystems for/usr, /opt etc. But as the whole disk is already allocated to / I am not able to do it.

Please let me know how can i do.

Is there any way to configure it now or should we reinstall only.

thanks!!

regards,
sanwin.

Re: Regarding disk partitioning and lvols

Steven E. Protter — Wed, 19 Nov 2008 13:47:33 GMT

Shalom,

Options:
1) reinstall the system.
2) use resize2fs to reduce the file system, then lvreduce or lvextend to modify the size of the logical volume, followed by lvcreate,lvextend,newfs to create new logical volumes with filesystems.

I am not sure option 2 will work, but in theory it should.

system-config-lvm
This utility may be useful in taking care of part of this process.

SEP

Re: Regarding disk partitioning and lvols

Ivan Ferreira — Wed, 19 Nov 2008 14:07:05 GMT

If this is a new installation, your best option is to do it again. Reducing and resizing the size of the root partition is a hard job.

Re: Regarding disk partitioning and lvols

SKR_1 — Thu, 20 Nov 2008 06:07:55 GMT

Simple and easiest way is to Reinstall the linux machine again. Its not better choice to use lvreduce,lvcreate commands here.

Thanks
SKR

Re: Regarding disk partitioning and lvols

Jeeshan — Thu, 20 Nov 2008 19:07:37 GMT

no way other than reinstallation.