Why does a LVM mapped partition add disk usage to root partition?
Clash Royale CLAN TAG#URR8PPP up vote
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Situation
On a server there are separate LVs with their respective mount points for /, /var, and /home.
LV sizes:/ = 38G ("used": 34G)/var = 184G (used: 25G)/home = 680G (used: 270G)
What puzzles me is that df -h shows Use% of 94% for /, corresponding to 34G out of 37G. The real total disk-usage on / is ~5G as I could verify via
~# du -ch --max-depth=1 --exclude=/var --exclude=/home /
4,0K /selinux
4,0K /dev
7,2M /bin
16K /lost+found
93M /boot
8,0K /mnt
7,6M /sbin
6,0M /run
0 /proc
76K /build
0 /sys
432M /etc
643M /lib
4,0K /lib64
11M /root
3,1G /usr
16K /nonexistent
20K /tmp
20K /srv
346M /opt
44K /media
4,6G /
4,6G total
I have checked for all the common known locations of where possibly large files could be hiding, but there is nothing, even checked for the inodes et cetera.
So I am getting suspicious that mounting the LV of /var adds to the disk-usage of /. Is this correct? And if so, what did I do wrong in the LV mapping and how to solve this issue? Then, what is the point of having separate PVs in the first place?
server partitioning mount disk-usage lvm
asked Jan 27 at 19:39
leonis_csem
193115
add a comment |Â
up vote
0
down vote
favorite
Situation
On a server there are separate LVs with their respective mount points for /, /var, and /home.
LV sizes:/ = 38G ("used": 34G)/var = 184G (used: 25G)/home = 680G (used: 270G)
What puzzles me is that df -h shows Use% of 94% for /, corresponding to 34G out of 37G. The real total disk-usage on / is ~5G as I could verify via
~# du -ch --max-depth=1 --exclude=/var --exclude=/home /
4,0K /selinux
4,0K /dev
7,2M /bin
16K /lost+found
93M /boot
8,0K /mnt
7,6M /sbin
6,0M /run
0 /proc
76K /build
0 /sys
432M /etc
643M /lib
4,0K /lib64
11M /root
3,1G /usr
16K /nonexistent
20K /tmp
20K /srv
346M /opt
44K /media
4,6G /
4,6G total
I have checked for all the common known locations of where possibly large files could be hiding, but there is nothing, even checked for the inodes et cetera.
So I am getting suspicious that mounting the LV of /var adds to the disk-usage of /. Is this correct? And if so, what did I do wrong in the LV mapping and how to solve this issue? Then, what is the point of having separate PVs in the first place?
server partitioning mount disk-usage lvm
asked Jan 27 at 19:39
leonis_csem
193115
1
Drop to single user mode. Unmount/var. See if there's another/varunderneath it.
– steeldriver
Jan 27 at 20:12
add a comment |Â
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Situation
On a server there are separate LVs with their respective mount points for /, /var, and /home.
LV sizes:/ = 38G ("used": 34G)/var = 184G (used: 25G)/home = 680G (used: 270G)
What puzzles me is that df -h shows Use% of 94% for /, corresponding to 34G out of 37G. The real total disk-usage on / is ~5G as I could verify via
~# du -ch --max-depth=1 --exclude=/var --exclude=/home /
4,0K /selinux
4,0K /dev
7,2M /bin
16K /lost+found
93M /boot
8,0K /mnt
7,6M /sbin
6,0M /run
0 /proc
76K /build
0 /sys
432M /etc
643M /lib
4,0K /lib64
11M /root
3,1G /usr
16K /nonexistent
20K /tmp
20K /srv
346M /opt
44K /media
4,6G /
4,6G total
I have checked for all the common known locations of where possibly large files could be hiding, but there is nothing, even checked for the inodes et cetera.
So I am getting suspicious that mounting the LV of /var adds to the disk-usage of /. Is this correct? And if so, what did I do wrong in the LV mapping and how to solve this issue? Then, what is the point of having separate PVs in the first place?
server partitioning mount disk-usage lvm
asked Jan 27 at 19:39
leonis_csem
193115
Situation
On a server there are separate LVs with their respective mount points for /, /var, and /home.
LV sizes:/ = 38G ("used": 34G)/var = 184G (used: 25G)/home = 680G (used: 270G)
What puzzles me is that df -h shows Use% of 94% for /, corresponding to 34G out of 37G. The real total disk-usage on / is ~5G as I could verify via
~# du -ch --max-depth=1 --exclude=/var --exclude=/home /
4,0K /selinux
4,0K /dev
7,2M /bin
16K /lost+found
93M /boot
8,0K /mnt
7,6M /sbin
6,0M /run
0 /proc
76K /build
0 /sys
432M /etc
643M /lib
4,0K /lib64
11M /root
3,1G /usr
16K /nonexistent
20K /tmp
20K /srv
346M /opt
44K /media
4,6G /
4,6G total
I have checked for all the common known locations of where possibly large files could be hiding, but there is nothing, even checked for the inodes et cetera.
So I am getting suspicious that mounting the LV of /var adds to the disk-usage of /. Is this correct? And if so, what did I do wrong in the LV mapping and how to solve this issue? Then, what is the point of having separate PVs in the first place?
server partitioning mount disk-usage lvm
server partitioning mount disk-usage lvm
asked Jan 27 at 19:39
leonis_csem
193115
asked Jan 27 at 19:39
leonis_csem
193115
asked Jan 27 at 19:39
leonis_csem
193115
asked Jan 27 at 19:39
leonis_csem
193115
asked Jan 27 at 19:39
leonis_csem
193115
193115
1
Drop to single user mode. Unmount/var. See if there's another/varunderneath it.
– steeldriver
Jan 27 at 20:12
add a comment |Â
1
Drop to single user mode. Unmount/var. See if there's another/varunderneath it.
– steeldriver
Jan 27 at 20:12
1
1
Drop to single user mode. Unmount
/var. See if there's another /var underneath it.– steeldriver
Jan 27 at 20:12
Drop to single user mode. Unmount
/var. See if there's another /var underneath it.– steeldriver
Jan 27 at 20:12
add a comment |Â
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1
Drop to single user mode. Unmount
/var. See if there's another/varunderneath it.– steeldriver
Jan 27 at 20:12