Hi,
in one server I do have a SSD raid 1 size 219GB.
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Any hints, what's eating up the space?
Centos 6.6, fs = ext4.
regards . Götz
On Mon, Nov 03, 2014 at 04:53:05PM +0100, Götz Reinicke - IT Koordinator wrote:
in one server I do have a SSD raid 1 size 219GB.
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Any hints, what's eating up the space?
Deleted files (check out the output of 'lsof' and look for deleted files)? This happens a lot when your log rotation system rotates a log but the daemon logging to it isn't restarted or told to use the new log files.
Also, you could have sparse files (read the man page for 'du' under --apparent-size) that appear to be using more space than 'du' normally reports.
Am 03.11.14 um 19:54 schrieb Jonathan Billings:
On Mon, Nov 03, 2014 at 04:53:05PM +0100, Götz Reinicke - IT Koordinator wrote:
in one server I do have a SSD raid 1 size 219GB.
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Any hints, what's eating up the space?
Deleted files (check out the output of 'lsof' and look for deleted files)? This happens a lot when your log rotation system rotates a log but the daemon logging to it isn't restarted or told to use the new log files.
Also, you could have sparse files (read the man page for 'du' under --apparent-size) that appear to be using more space than 'du' normally reports.
Hi, I checked your suggestions but still no clue what might be "wrong".
lsof reports just two DEL Files "sshd .... /dev/zero" and a du with --apparent-size shows the same result.
still wondering ... Regards . Götz
On Nov 3, 2014, at 7:53 AM, Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de wrote:
Hi,
in one server I do have a SSD raid 1 size 219GB.
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Any hints, what's eating up the space?
Centos 6.6, fs = ext4.
regards . Götz
The ext[234] filesystems reserve a certain amount of space for use by root only. If I remember correctly, the default if 5%, but you can tune that with tune2fs(8) or mkfs.ext4(8). The df command subtracts the reserved space when it shows the amount free. So an empty 1GB filesystem would show as having 950 MB free.
Hope that helps…
Rick
Am 04.11.14 um 08:45 schrieb Rick Thomas:
On Nov 3, 2014, at 7:53 AM, Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de wrote:
Hi,
in one server I do have a SSD raid 1 size 219GB.
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Any hints, what's eating up the space?
Centos 6.6, fs = ext4.
regards . Götz
The ext[234] filesystems reserve a certain amount of space for use by root only. If I remember correctly, the default if 5%, but you can tune that with tune2fs(8) or mkfs.ext4(8). The df command subtracts the reserved space when it shows the amount free. So an empty 1GB filesystem would show as having 950 MB free.
Hi thanks, I'm aware of that, and in my case that would be as if 95% are reserved for root. Currently I "miss" 195 +- GB ....
Regards . Götz
On Mon, 03 Nov 2014 16:53:05 +0100 Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de wrote:
...
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Next thing to check is stuff hiding under mount points. That is for example the /tmp directory on the root fs containing stuff but another fs then mounted on /tmp hiding that.
/Peter
Am 04.11.14 um 09:43 schrieb Peter Kjellström:
On Mon, 03 Nov 2014 16:53:05 +0100 Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de wrote:
...
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Next thing to check is stuff hiding under mount points. That is for example the /tmp directory on the root fs containing stuff but another fs then mounted on /tmp hiding that.
df -h
Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_richter2-lv_root 219G 198G 9,3G 96% / tmpfs 16G 0 16G 0% /dev/shm /dev/sda1 477M 49M 403M 11% /boot /dev/sdb 8,2T 1,1T 7,1T 14% /srv/files
so I dont see any hidden fs under / beside /srv/files, which is not included in my du calculation.
Thanks and regards for more hints ... /Götz
Am 04.11.2014 um 10:40 schrieb Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de:
Am 04.11.14 um 09:43 schrieb Peter Kjellström:
On Mon, 03 Nov 2014 16:53:05 +0100 Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de wrote:
...
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Next thing to check is stuff hiding under mount points. That is for example the /tmp directory on the root fs containing stuff but another fs then mounted on /tmp hiding that.
df -h
Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_richter2-lv_root 219G 198G 9,3G 96% / tmpfs 16G 0 16G 0% /dev/shm /dev/sda1 477M 49M 403M 11% /boot /dev/sdb 8,2T 1,1T 7,1T 14% /srv/files
so I dont see any hidden fs under / beside /srv/files, which is not included in my du calculation.
hidden stuff not hidden fs - just unmount /boot + /srv/files and check the emptiness in this directories.
-- LF
Am 04.11.14 um 14:11 schrieb Leon Fauster:
Am 04.11.2014 um 10:40 schrieb Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de:
Am 04.11.14 um 09:43 schrieb Peter Kjellström:
On Mon, 03 Nov 2014 16:53:05 +0100 Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de wrote:
...
df shows 9.4 GB free, 198GB used.
If I do "du -sch * | sort -h -r" on /, I just have close to 3.5GB used ....
Next thing to check is stuff hiding under mount points. That is for example the /tmp directory on the root fs containing stuff but another fs then mounted on /tmp hiding that.
df -h
Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_richter2-lv_root 219G 198G 9,3G 96% / tmpfs 16G 0 16G 0% /dev/shm /dev/sda1 477M 49M 403M 11% /boot /dev/sdb 8,2T 1,1T 7,1T 14% /srv/files
so I dont see any hidden fs under / beside /srv/files, which is not included in my du calculation.
hidden stuff not hidden fs - just unmount /boot + /srv/files and check the emptiness in this directories.
@-) Thanks 1000000 kowtows; under /srv there was "hidden" stuff (195GB)
case closed. /Götz
-
Götz Reinicke - IT Koordinator -
Jonathan Billings -
Leon Fauster -
Peter Kjellström -
Rick Thomas