[Bug 1316125] Re: Autofs leak file descriptors when reloaded (-HUP) and daemon may stop working on high # of shares/reloads

[Rafael David Tinoco]

# verification-trusty

inaddy at trusty.1315535:~$ cat /etc/auto.master 
/- /etc/auto.direct

inaddy at trusty.1315535:~$ cat /etc/auto.direct 
# cat /etc/auto.direct
# /nfs.client localhost:/nfs.server
/nfs.client/dir01 localhost:/nfs.server
/nfs.client/dir02 localhost:/nfs.server

# after changing auto.direct
inaddy at trusty.1315535:~$ sudo kill -HUP $(pidof automount)

inaddy at trusty.1315535:~$ sudo ls -la /proc/$(pidof automount)/fd | grep /nfs
lr-x------ 1 root root 64 Sep 29 15:23 10 -> /nfs.client/dir02
lr-x------ 1 root root 64 Sep 29 15:23 4 -> /nfs.client
lr-x------ 1 root root 64 Sep 29 15:23 9 -> /nfs.client/dir01
inaddy at trusty.1315535:~$ sudo kill -HUP $(pidof automount)
inaddy at trusty.1315535:~$ sudo ls -la /proc/$(pidof automount)/fd | grep /nfs
lr-x------ 1 root root 64 Sep 29 15:23 10 -> /nfs.client/dir02
lr-x------ 1 root root 64 Sep 29 15:23 4 -> /nfs.client
lr-x------ 1 root root 64 Sep 29 15:23 9 -> /nfs.client/dir01
inaddy at trusty.1315535:~$ sudo kill -HUP $(pidof automount)
inaddy at trusty.1315535:~$ sudo ls -la /proc/$(pidof automount)/fd | grep /nfs
lr-x------ 1 root root 64 Sep 29 15:23 10 -> /nfs.client/dir02
lr-x------ 1 root root 64 Sep 29 15:23 4 -> /nfs.client
lr-x------ 1 root root 64 Sep 29 15:23 9 -> /nfs.client/dir01
inaddy at trusty.1315535:~$ sudo kill -HUP $(pidof automount)
inaddy at trusty.1315535:~$ sudo ls -la /proc/$(pidof automount)/fd | grep /nfs
lr-x------ 1 root root 64 Sep 29 15:23 10 -> /nfs.client/dir02
lr-x------ 1 root root 64 Sep 29 15:23 4 -> /nfs.client
lr-x------ 1 root root 64 Sep 29 15:23 9 -> /nfs.client/dir01

# verification-done-trusty

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Server Team, which is subscribed to autofs in Ubuntu.
https://bugs.launchpad.net/bugs/1316125

Title:
  Autofs leak file descriptors when reloaded (-HUP) and daemon may stop
  working on high # of shares/reloads

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