03-23-2009
I tested out on another system (a test box), and this is apparently normal LOFS behaviour.
Q. Is this normal behaviour for LOFS mounted filesystems? If I mount x on top of y, and create a mountpoint z that uses x as part of the directory name, will I not be able to access the mountpoint z by using y as part of the directory name?
A. Yes. To be able to access mountpoint z for a different filesystem that uses either x or y as part of the pathname, z will have to contain the pathname x when it gets mounted. Then you can access it via either /x/z or /y/z.
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HFS.UTIL(8) BSD System Manager's Manual HFS.UTIL(8)
NAME
hfs.util -- HFS/HFS+ file system utility
SYNOPSIS
hfs.util -m device mountpoint [mountflag1] [mountflag2] [mountflag3] [mountflag4]
hfs.util -p device [mountflag1] [mountflag2] [mountflag3] [mountflag4]
hfs.util -J [size] mountpoint
hfs.util -U mountpoint
hfs.util -N device
hfs.util -I mountpoint
hfs.util [-aksu] device
DESCRIPTION
The hfs.util command supports the mounting, probing, and unmounting of HFS file systems.
Options:
-a Adopt permissions for the HFS file system at device
-I Print out status information about the journal on the HFS file system at mountpoint
-J [size] Enable journaling on the HFS file system mounted on mountpoint. An optional size may be specified (e.g. 32M for a 32
megabyte journal).
-k Get the UUID key for the HFS file system at device.
-m Mount the HFS file system located on device onto mountpoint with the flags mountflag1 mountflag2 mountflag3 mountflag4
-M Force mount the HFS file system located on device onto mountpoint with the flags mountflag1 mountflag2 mountflag3
mountflag4. This is a deprecated option.
-N Disable journaling on a HFS+ file system located at device
-p Probe the device for an HFS file system using the flags mountflag1 mountflag2 mountflag3 mountflag4
-s Set the UUID key (generates a new UUID value) for the HFS file system at device
-u Unmount the HFS file system located at device
-U Disable journaling on the HFS+ file system mounted on mountpoint
The mountflags referenced above are either:
o removable or fixed
o readonly or writeable
o suid or nosuid
o dev or nodev
Note that for the device references above, you must only supply the last component of the path to the device in question, such as disk0s2
rather than /dev/disk0s2.
SEE ALSO
diskarbitrationd(8)
HISTORY
Derived from the Openstep Workspace Manager file system utility programs.
Darwin July 16, 2003 Darwin