KS-Soft

Posted: **Fri Nov 23, 2007 9:24 pm**

Can you publish what formula you use to calculate percentage free for UNC?

Using linux RMA we get a discrepency on Debian based system. e.g.:

OS says:
9.1G 7.2G 1.5G 84% /var

Where 84% is amount used

HM says:
Reply: 21%

Where alert is set to alert on percent < 20%

I've also seen different behaviour than the above from RedHat where the mount didn't work (e.g. /var) but adding the dev device did.

I don't think this is a problem with RMA seems more like someone is using the HD idea of disk and the other the OS idea of disk.

Posted: **Mon Nov 26, 2007 4:29 am**

Actually, RMA uses standard function statfs() to retrieve free space information. What exact free space parameter do you check: free space for current user or the total free space?

Regards,
Max

Posted: **Mon Nov 26, 2007 7:18 am**

Code is pretty simple

Code: Select all

  struct statfs statbuf;
  if (statfs(path, &statbuf)==0)
  {
     total = (int64)(statbuf.f_blocks) * statbuf.f_bsize;
     free  = (int64)(statbuf.f_bfree)  * statbuf.f_bsize;
     freeforuser = (int64)(statbuf.f_bavail) * statbuf.f_bsize;
     return True;
  }
  else return False;

Regards
Alex

KS-Soft

UNC free space calculation

UNC free space calculation