topic Re: decrease size of file systems in Operating System - HP-UX

decrease size of file systems

Oleg Goudovany_1 — Mon, 30 Sep 2002 14:14:04 GMT

Hi, all!

Please ask - can I decrease size of file systems in my HP-UX 10.20?
I know what in SAM can increase size with step 4 Mb.

Thanx in advance.
Oleg

Re: decrease size of file systems

Joaquin Gil de Vergara — Mon, 30 Sep 2002 14:16:29 GMT

yes

backup data
umount file system

lvreduce Logical Volume

format lvol (newfs)

mount file system

restore data

good luck!

Re: decrease size of file systems

Sean OB_1 — Mon, 30 Sep 2002 14:19:45 GMT

Unless you have online-jfs you will need to rebuild the file system at the smaller size.

Here are the steps involved without online-jfs.

backup/copy data

umount /file/system/to/reduce
lvreduce /dev/vgNN/lvoltoreduce
newfs fileystem
mount /dev/vgNN/lvol /file/system/just/reduced

restore/copy data back to filesystem

HTH

Sean

Re: decrease size of file systems

MANOJ SRIVASTAVA — Mon, 30 Sep 2002 14:27:35 GMT

Hi Oleg

Yes you can do it , but then you need to abck up data as it is more safe to do it that way , incase you ahve online JFS installed then you can do it on the fly but then it may result in lss of data , the safest way is to backup , lvreduce and then resoter data if required.

Manoj Srivastava