Unresponsive NFS server

At Calidade Systems we check our customer daily backup report. Today we detect the lack of one report.

NFS Share

We connect to our customer Linux server and saw a unusual high CPU load but no processor usage, if we don’t have cpu usage the cause should be storage, we are sending backups to a NFS server, Our linux server had lost nfs connection and was having problems trying to reconnect to server.

we tried to umount NFS share but we get a device busy message.

we need to force this umount with

umount.nfs -f -l /mount/point

-f to force

-l to make a lazy umount

now we can remount our nfs

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