Messages in this thread | | | Date | Tue, 25 Sep 2012 08:42:48 +0200 | From | Maarten Lankhorst <> | Subject | Re: [PATCH] Revert "__d_unalias() should refuse to move mountpoints" |
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Hey,
Op 25-09-12 05:39, Eric W. Biederman schreef: > Maarten Lankhorst <maarten.lankhorst@canonical.com> writes: > >> This reverts commit ee3efa91e240f513898050ef305a49a653c8ed90. >> >> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> >> >> My thread about the regression seemed to have been ignored, so I can only >> conclude nobody objects against a full revert of this patch. >> >> My testcase is simply booting through netboot with / and ~/nfs as separate >> nfs filesystems, then doing 'ls ~/nfs' followed by 'ls ~' in a gnome-terminal >> window, then I get: > Do I read your description correctly: Without using a bind mount you > have the same nfs filesystem mounted on / and on ~/nfs? > > Something is definitely off with your configuration but if to work you > need to move mount points around then that something seems much deeper > than the __d_unalias change. > > What filesystems do you have mounted where? > / is a nfs filesystem, ~/nfs is a different nfs filesystem. Just doing ls / is enough to make all filesystems mounted on / return -EBUSY and disappear.
I also have a subdir of ~/nfs/ bind mounted to /lib/modules/$(uname -r)/kernel for easy debugging so just doing 'make' in the kernel tree is enough to get the new modules + bzImage, but I don't know if it is a factor in reproducing this bug or not.
~Maarten
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