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Full Discussion: How to share/mount ZFS in two non-global zones?
Operating Systems Solaris How to share/mount ZFS in two non-global zones? Post 302466254 by jlliagre on Tuesday 26th of October 2010 04:23:56 AM
Old 10-26-2010
Quote:
Originally Posted by blicki
However, using LOFS to share one dataset into two local zones can be risky as hell, if both zones work on same data (read-write)
This doesn't make sense. Having multiple processes accessing the same file in r/w mode might be risky regardless of whether the file system is local or not and regardless of the accessing processes running on the same kernel or not. You can lofs mount in read-only mode should you want to avoid that specific issue. On the other hand, it is extremely common to have NFS, cifs or lofs shares in r/w mode and this definitely serves a purpose. File locking is the usual way to avoid multiple processes concurrently accessing the same file.
Quote:
Therefore I would use second opinion only.
You really shouldn't. This is not supported (see NOTES in the mount_nfs manual page). It is well know to create kernel deadlocks, which are much "riskier as hell" than the previous solution you discarded.

Bug ID: 6811806 automounter should prevent zone-to-global-zone mounts
 

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LEARN ABOUT DEBIAN

zdb

zdb(8)							  System Administration Commands						    zdb(8)

NAME

       zdb - ZFS debugger

SYNOPSIS

       zdb pool

DESCRIPTION

       The  zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file system is always consistent on
       disk and is self-repairing, zdb should only be run under the direction by a support engineer.

       If no arguments are specified, zdb, performs basic consistency checks on  the  pool  and  associated  datasets,	and  report  any  problems
       detected.

       Any options supported by this command are internal to Sun and subject to change at any time.

EXIT STATUS

       The following exit values are returned:

       0    The pool is consistent.

       1    An error was detected.

       2    Invalid command line options were specified.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWzfsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Unstable			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       zfs(8), zpool(8), attributes(5)

SunOS 5.11							    31 Oct 2005 							    zdb(8)
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