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Titel
Redhat 6 hangs on shutdown the /opt file system cannot be unmounted properly -
Beschreibung
On Redhat 6, during the reboot, you see the following:Turning off quotas: [ OK ]
Unmounting pipe file systems: [ OK ]
Unmounting file systems: umount2: Device or resource busy
umount: /opt/quest: device is busy
umount2: Device or resource busy
umount: /opt/quest: device is busy
[ FAILED ]
/opt/quest: rcercrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrc
rcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrc
rcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrc
rcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrcrce
INIT: no more processes left in this runlevelRedhat 5 and 6 have begun to hang on shutdown/reboot
Some QAS libraries are owned by "init" causing the /opt file system not to unmount cleanly during a reboot.The issue occurs when the following conditions are met:
1. Redhat 6 Linux.
2. /opt is on a separate file system
3. vas3 is behind files in the nsswitch.conf file -
Ursache
The dbus shlib used by the RHEL6 init makes reference to the getpw*() calls that will result in nsswitch.conf shlibs being referenced. The referenced QAS libraries are not unloaded properly before unmounting /opt during reboot.
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Lösung
WORKAROUND:
1. Do not create separate logic volume for /opt
2. Create a symbolic link for /opt/quest to install QAS client to /quest”
[root@redhat6 ~]# mkdir /quest
[root@redhat6 ~]# ln -s /quest /opt/quest
[root@redhat6 ~]# ./install.sh vasclnt
...
[root@redhat6 ~]# lsof | grep init | grep quest
init 1 root mem REG 253,1 58162 6618 /quest/lib/nss/libnss_vas3.so.2
init 1 root mem REG 253,1 2635841 6616 /quest/lib/libvas.so.4.5.1
STATUS:Enhancement request CR# 25549 has been submitted to Development for consideration in a future release of Quest Authentication Services.
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Änderungsanforderung
25549