Hi John, Am currently running dos mode not graphical mode. Could you have any other method. Hi Ashish, You are correct. qmailtoaster backup file which was around 184 GB in backup.gz type and i have removed .bz2 type file with the same backup/mailbkup directory. After removed .bz2 file it's gone backup.gz also which was 184 GB file. I have run this command locate .gz but couldn't find out it. how do i see the open files. Could you help me to find out this file or any soln. On Thu, Apr 7, 2016 at 12:55 PM, Ashish Yadav <gwalashish at gmail.com> wrote: > Hi Chandran, > > > On Thu, Apr 7, 2016 at 9:14 AM, Chandran Manikandan <tech2mani at gmail.com> > wrote: > > > Hi All, > > > > I have running Centos 6.5 32 bit machine. > > This machine is running qmailtoaster packages and mailbox size is 385 GB. > > > > if i run the df -h command it show 385 GB out of 1TB > > > > I have run the same command today suddenly shows 576 GB out of 1 TB. > > > > I didn't update any bulk file and mail transaction is not very high. > > > > How do i check this issue and fix it. > > > > how do i find out and why suddenly showing this much of increasing the > size > > of hard disk. > > > > Could anyone help me > > > > Basically, df reads the superblock only and trusts it completely. du reads > each object and sums them up. > > Any running process can keep a deleted file open. This means the space will > still be reserved and seen by df, > but since du will no longer see a reference to that file in the directory > tree, it cannot see those reserved blocks. > > Try to see the number of open file which could be causing the problem. > > > --Regards > Ashishkumar S. Yadav > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > -- *Thanks,* *Manikandan.C* *System Administrator*