The sloppy mount feature of autofs appends a "-s" flag to the mount command, but mount.crypt does not support this flag. The ebuild of autofs explicity enables this feature, which makes autofs to fail in combination with mount.crypt. Bug #171166 and #453778 are related. Reproducible: Always
By the way mount.vboxsf has no support for -s, too. On bugs.debian.org, a recent patch was mentioned that was merged into openSUSE, but I have not looked at it yet: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=773607 https://build.opensuse.org/package/view_file/home:mszeredi:branches:openSUSE:13.2:Update/autofs/autofs-5.1.0-dont-pass-sloppy-option-for-other-than-nfs-mounts.patch?expand=1
Created attachment 401558 [details, diff] Do sloppy mount only for NFS
The patch applies to autofs-5.0.7-r4 and 5.1.0 (and presumable all versions inbetween) too.
+*autofs-5.1.0-r1 (21 Apr 2015) +*autofs-5.0.9-r1 (21 Apr 2015) +*autofs-5.0.8-r2 (21 Apr 2015) +*autofs-5.0.7-r5 (21 Apr 2015) + + 21 Apr 2015; Yixun Lan <dlan@gentoo.org> +autofs-5.0.7-r5.ebuild, + +autofs-5.0.8-r2.ebuild, +autofs-5.0.9-r1.ebuild, +autofs-5.1.0-r1.ebuild, + +files/autofs-5.0.7-sloppy-mount.patch: + fix sloopy mount option which break other than nfs, bug 545258 thanks for your report and patches!