The slave is configured with the root FS directory in the configuration page as /some/location [A].
The home directory of the ssh username on the slave is /home/hudson [B].

These two directories are in different partitions. If the remaining disk space in partition [B] falls below threshold, the slave is disconnected. But the working directory for the slave is [A], and it has plenty of disk space above threshold.

The disk space checking should be restricted to the directory [A].
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