On Thu, April 21, 2016 10:23 pm, John R Pierce wrote: > On 4/21/2016 7:49 PM, Chandran Manikandan wrote: >> Finally fixed my issue. >> As you told i have unmount the external hard disk then i checked the >> /bkhdd/backup folder. >> I saw that 190GB backup tar.gz file then i deleted and again remount it. >> >> Thanks a lot for your kind supporting to me to fix this issue. >> >> Why it's happened like this environment and how to avoid it. > > > don't write to mount points when they aren't mounted, the files get > written to the file system. and don't create any directories in the > mount point... like, if you were mounting /dev/sdb1 as /bkhdd then on > the root file ssytem (without that mount) there should never have been > any /bkhdd/backup directory. in fact /bkhdd should not be writable by > your user processes. John, thanks for reminding this to all of us, I for one keep forgetting about it (at least if I'm not dealing with it myself which usually acts as a federal offense on me ;-) I know one Linux admin who removes write bit from mount points. Valeri > > I remember older Unix systems would refuse to mount a file system to a > non-empty directory, for exactly this reason, it hides stuff thats > already there. > > > > -- > john r pierce, recycling bits in santa cruz > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++