[Lustre-discuss] umount on client - device busy

[Carlos Santana]

I am unable to unmount file system from the client. The (test) installation
is a single node type with MDS-OST-client running on same machine. Following
are the error messages with umount command (even with -f):

--- ---
umount: /mnt/lustre: device is busy
umount: /mnt/lustre: device is busy

(device/resource busy with -f option)
--- ---

What process might be accessing the device? The 'ps -aux' showed me lot of
lustre related processes, so I am not sure which one should be killed (if
necessary). Any hints?

Thanks,
CS.
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