(1) In general, the /net automount recovers from mount failures automatically, as per the automount -n option.<br />
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(2) In general, the /net automount can be used with a new mount even if an existing mount from the same source is in use.<br />
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However, if one combines (1) and (2), automount negative caching doesn't work right. That is, if one has an automount mount failure in /net while an existing mount is mounted from the same source and in-use, automount never recovers. Even restarting autofs doesn't help.
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