defragfs command

[MoreFeo]

Hi, we've got some errors in errpt about a filesystem being fragmented, and the recommended action is to run defragfs utility.
The filesystem is /opt, and it was 100% used (now it's 97%).
If I run this command, will this have some impact on the server or the applications running that are running? We've got some live apps, and I don't want to mess anything, shoould I wait til a maintenance window?

Thanks

 

[ogniemi]

from my experiense the defragfs never helped me too much.

I run it on open LV / FS and met no problems.

but please ensure, your system is not affected by following APARs:

AIX 53:

http://www-1.ibm.com/support/docview.wss?uid=isg1IY76833

AIX 52:

http://www-1.ibm.com/support/docview.wss?uid=isg1IY76829

AIX 51:

http://www-1.ibm.com/support/docview.wss?uid=isg1IY76827

 

[khalidaaa]

defragfs might help reducing the fragments on the filesystem but if your system is heavily utilized (or production as in your case) i would prefer doing it after working hours to avoid preformance issues.

Regards,
Khalid