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overlayfs root filesystem, cannot read /etc/mtab

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1

I'm doing the following:

mkdir /tmp/upper /tmp/work
mount -t overlay overlay -o lowerdir=/,upperdir=/tmp/upper,workdir=/tmp/work /

ls -l /etc/mtab
> lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> cat: /etc/mtab: file or directory not found

umount /

ls -l /etc/mtab
lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> correctly prints mtab...

My question is, why is that so? What did I miss, regarding overlayfs?

disk-usage cat etc overlayfs

share|improve this question

edited 1 min ago

Rui F Ribeiro

41.3k1481140

asked Jun 17 '15 at 20:52

Maik AllgöwerMaik Allgöwer

61

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Sounds like deja vu. Please check my answer I hope this will help.
  
  – Georgi
  Nov 3 '17 at 12:12
  

  
  
  
  

add a comment | 

1

I'm doing the following:

mkdir /tmp/upper /tmp/work
mount -t overlay overlay -o lowerdir=/,upperdir=/tmp/upper,workdir=/tmp/work /

ls -l /etc/mtab
> lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> cat: /etc/mtab: file or directory not found

umount /

ls -l /etc/mtab
lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> correctly prints mtab...

My question is, why is that so? What did I miss, regarding overlayfs?

disk-usage cat etc overlayfs

share|improve this question

edited 1 min ago

Rui F Ribeiro

41.3k1481140

asked Jun 17 '15 at 20:52

Maik AllgöwerMaik Allgöwer

61

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Sounds like deja vu. Please check my answer I hope this will help.
  
  – Georgi
  Nov 3 '17 at 12:12
  

  
  
  
  

add a comment | 

I'm doing the following:

mkdir /tmp/upper /tmp/work
mount -t overlay overlay -o lowerdir=/,upperdir=/tmp/upper,workdir=/tmp/work /

ls -l /etc/mtab
> lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> cat: /etc/mtab: file or directory not found

umount /

ls -l /etc/mtab
lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> correctly prints mtab...

My question is, why is that so? What did I miss, regarding overlayfs?

disk-usage cat etc overlayfs

share|improve this question

edited 1 min ago

Rui F Ribeiro

41.3k1481140

asked Jun 17 '15 at 20:52

Maik AllgöwerMaik Allgöwer

61

mkdir /tmp/upper /tmp/work
mount -t overlay overlay -o lowerdir=/,upperdir=/tmp/upper,workdir=/tmp/work /

ls -l /etc/mtab
> lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> cat: /etc/mtab: file or directory not found

umount /

ls -l /etc/mtab
lrwxrwxrwx 1 root root 19 27. Feb 09:16 /etc/mtab -> ../proc/self/mounts

cat /etc/mtab
> correctly prints mtab...

share|improve this question

edited 1 min ago

Rui F Ribeiro

41.3k1481140

asked Jun 17 '15 at 20:52

Maik AllgöwerMaik Allgöwer

61

share|improve this question

edited 1 min ago

Rui F Ribeiro

41.3k1481140

asked Jun 17 '15 at 20:52

Maik AllgöwerMaik Allgöwer

61

edited 1 min ago

Rui F Ribeiro

41.3k1481140

edited 1 min ago

Rui F Ribeiro

41.3k1481140

asked Jun 17 '15 at 20:52

Maik AllgöwerMaik Allgöwer

61

asked Jun 17 '15 at 20:52

Maik AllgöwerMaik Allgöwer

61