Originally posted by: MikamiKumi

Hi! all

Free space does not decrease, but I have deleted 8% of file.

"du"  :reduce space

"lsvg":free space is 0 .

OS:AIX ver 5

How to reduce the vg size ?
refer to the attached file for details.
 

regards

Originally posted by: Wouter Liefting

Your VG contains Logical Volumes (LVs), which in turn contain filesystems (FS).

If you delete files then you free up space in the FS. You can see that with df (*). But if you want to free up space in the VG, you need to reduce the size of the LVs and FSs. The command chfs will do that for you (chfs -a size=-2G /tmp for instance).

(*) Note that df doesn't give absolute numbers. Rather, the numbers are based on a certain percentage of the total size, because it wants to reserve some space for root. So there may be space in the FS available even if df reports 100% usage.

Originally posted by: MikamiKumi

Thank you for ditals.
After I reduce FS size ,Is there no problem in the online system?
The system don't have backup media now.

Originally posted by: Wouter Liefting

You can just resize the LV/FS at will. There is no impact on the rest of the system, obviously until you shrink the FS to the point where things don't fit inside anymore.

Having said that, it's a bad idea not to make any backups.

Originally posted by: MikamiKumi

Thank you for quick response.

I was relieved to hear it.

And I also think the backup system is important.

I'm lucky,I can input at this forum.

AIX v5 is off support.

There is no place that I can get technical info except here.