topic Re: LVM in Operating System - Linux

LVM

Pham Quoc Trung — Wed, 28 May 2003 11:02:21 GMT

Hi,

I'm using SuSE8 with LVM. When I need to increase a filesystem's size of a Logical Volume, it's OK in the YaST. But when I check in the shell console, the filesystem's size still unchanges.

I need to remove the filesystem, and then create it again with a new size. It's unacceptable !

Please advice. Thanks

Re: LVM

Kjartan Maraas — Wed, 28 May 2003 11:08:37 GMT

According to the docs on LVM you need to do two things:

- use 'lvextend' to extend the logical volume to the desired size.

- then resize the filesystem to match the volume's new size. How this is done depends on the filesystem you're using.

http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/LVM-HOWTO.html#AEN586

Re: LVM

Bruno Vidal — Wed, 28 May 2003 11:22:58 GMT

Hi,
It is normal, don't make the confusion between LVM that is a volume manager: ie give access to an disk space (like whole disk, VxVm) and a file system that is a specific software layer to access files. So if you extend the logical volume, you then after need to extend your file system by using the right command. In your case it should be resize2fs.

Cheers.

Re: LVM

Sunil Sharma_1 — Thu, 29 May 2003 03:15:27 GMT

Hi,

LVM is logical volume Manager not a File System Manager so when we use LVM related commands it work only up to volume levels and even after extending size by lvextend it won't take affect till you increase file system size using FS related commands like fsadm,vxresize for Veritas file systems, extendfs in HPUX HFS file system etc.

so just have a look what kind of file system you re using and use appropriate command
All above command preserve data during execution ....

Sunil S

Re: LVM

Pham Quoc Trung — Thu, 29 May 2003 03:56:39 GMT

Thanks a lot