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Full Discussion: Normal LOFS behaviour?
Operating Systems Solaris Normal LOFS behaviour? Post 302300033 by blowtorch on Monday 23rd of March 2009 03:44:34 AM
Old 03-23-2009
Normal LOFS behaviour?
I've got one directory LOFS mounted on top of another (this is to help move from an older standard that we used to follow to a newer one that we will be).

Something like this:

Code:
bash-3.00# df -k | grep /x
/dev/md/dsk/d4       77449687   88172 76587019     1%    /x
/x                  77449687   88172 76587019     1%    /app

Now,
Code:
bash-3.00# cd /x
bash-3.00# ls
ControlMagent6.2  admin             home              oracle
InfraData         dbatools          lost+found
bash-3.00# cd /app
bash-3.00# ls
ControlMagent6.2  admin             home              oracle
InfraData         dbatools          lost+found

which is fine.
But,
Code:
bash-3.00# cd /app/dbatools
bash-3.00# ls
DBE_DBATOOLS  lost+found    open_client
bash-3.00# cd /x/dbatools
bash-3.00# ls
bash-3.00#

The thing to note here is that /app/dbatools is a separate filesystem as opposed to just being a directory.
Code:
bash-3.00# df -k /app/dbatools
Filesystem            kbytes    used   avail capacity  Mounted on
/dev/vx/dsk/oracle_locdg/dbatools
                     9437184  571386 8311701     7%    /app/dbatools

The DBAs have scripts that are referring to /x/dbatools and expecting to find other scripts/commands to execute under that directory, and the lack of any directory structure under /x/dbatools is causing them to fail.

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?
 

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LEARN ABOUT SUNOS

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)
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