Why systemd automount shares hangs on autofs4_expire_wait?
Issue
- x-systemd.automount's NFS shares hang after indeterminate amount of time with or without active I/O. Recovery is not possible without reboot.
- Commands like
df -hwould result in a hang. -
These occur only if a specific timeout is mentioned in the mount options inside /etc/fstab or the unit file:
nfs-server:/export /nfs/mount nfs defaults,x-systemd.automount,x-systemd.idle-timeout=300 0 0
Environment
- Red Hat Enterprise Linux (RHEL) 7
- systemd
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