6642290

[Alan Bateman]

Umashankar,

I've been discussing Solaris bug 6642290 [1] with Prakash. You may 
recall that this is the underlying bug that causes watch keys to be 
automatically cancelled on Nevada when the automounter tries, but fails, 
to unmount a file system because it is in use. One of your tests runs 
into this when watching files on a home directory and you've asked me 
about it a few times. It looks like this isn't going to be feasible to 
fix in the kernel but he has suggested a workaround that I have 
implemented. The workaround has one one side effect that arises when 
watching directories an automounted file systems that are otherwise not 
in use. In that case, if the automounter does unmount the file system 
then the re-registration in the watch service implementation will cause 
the file system to be immediately re-mounted. We don't think this will 
be a big problem. So assume this will be resolved for the next build. 
Once you have that then you should be able to run that test for >10 
minutes (automount's default idle duration). He did alert me to one 
other bug that you should be aware of. The bug is 6636438 [2]. That one 
needs 6651501 [3] to be implemented first. I don't plan to put in a 
workaround for that.

-Alan.

[1] http://bugs.opensolaris.org/view_bug.do?bug_id=6642290
[2] http://bugs.opensolaris.org/view_bug.do?bug_id=6636438
[3] http://bugs.opensolaris.org/view_bug.do?bug_id=6651501