3.1.2 MxFS-Linux Release Notes

Matrix File Serving Solution Pack for Linux 8

10742 Unmounting exported filesystem requires extra step

Before a PSFS filesystem can be unmounted, all processes must

release their references on the filesystem. The NFS server

process retains these references on exported filesystems, and

prevents the filesystem from being unmounted.

To work around this problem, you will need to take the

following steps to unmount a PSFS filesystem that is being

exported from an Export Group. (This procedure does not

impact other Export Groups exporting different filesystems via

the same server.)

1. Disable the Export Groups that are exporting the filesystem

to be unmounted. You will need to disable the Export Groups

on each server from which the filesystem is to be unmounted.

2. Run the command exportfs -ua on each server where the

filesystem will be unmounted.

3. Unmount the filesystem from the servers. If you see a “device

busy” message, run the exportsfs -ua command again and

then repeat the unmount operation.

Defect Description