Unix df not updating

11-Nov-2019 22:55

Here we will learn how to remove deleted open files in Linux.

Most of the time files are deleted manually but processes using those files are keep them open and hence space is not reclaimed.

Perhaps the files you deleted brought the utilisation down to this point, but not below the threshold for normal users.

If this is your situation and you're desperate, you may be able to alter the amount of space reserved for Second, the operating system won't release disk space for deleted files which are still open.

Above programs are good if GUI is not installed or you are working with remote system over the ssh based session.

Linux and UNIX-like oses comes with KDE and Gnome desktop system.

[[email protected] ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 130G 124G 0 100% / /dev/sdb1 264G 188M 250G 1% /data /dev/sda1 99M 24M 71M 26% /boot tmpfs 2.0G 0 2.0G 0% /dev/shm [[email protected] ~]# mount /dev/sda3 on / type ext3 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) /dev/sdb1 on /data type ext3 (rw) /dev/sda1 on /boot type ext3 (rw) tmpfs on /dev/shm type tmpfs (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw) can write to, so that critical system process don't fall over when normal users run out of disk space.

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One file fails to close the file descriptor and you wind up with a 4GB file of trash.

If you've deleted (say) one of Apache's log files, you'll need to restart Apache in order to free the space.

2 others ways to get the disk is full issue: 1) hidden under a mount point: linux will show a full disk with files "hidden" under a mount point.

If you have data written to the drive and mount another filesystem over it, linux correctly notes the disk usage even though you can't see the files under the mount point.

If you have nfs mounts, try umounting them and looking to see if anything was accidentally written in those directories before the mount.ow do I check free disk space in Linux or UNIX operating system?