[ANN] unionfs patchset-19-20070504 release,
it is now MPSAFE and transparent mode as default
danny at cs.huji.ac.il
Sun May 6 08:34:40 UTC 2007
> Hi Guys
> It is my pleasure and honor to announce the availability of
> the unionfs patchset-19-20070504. p19 is second patchset after
> its merged of FreeBSD. Our improvements works of unionfs are
> going step by step. p19 is milestone release.
> For 7-current
> For 6-stable
> Changes in unionfs-p19-20070504.diff
> - It has been became MPSAFE.
> - Default copy mode has been changed from traditional-mode to
> transparent-mode. Some folks who have reported some issues
> have solved with transparent mode. We guess it is time to
> change the default copy mode. The transparent-mode is the
> best in most situations.
> - Fixed kern/111262 issue.
> - Added support of vfs_cache on unionfs. As a result, you
> can use applications that use procfs on unionfs.
> - Removed unionfs internal cache mechanism because it has
> vfs_cache support instead. As a result, it just simplified
> code of unionfs.
> - Added whiteout behavior option. ``-o whiteout=always'' is
> default mode(it is established practice) and
> ``-o whiteout=whenneeded'' is less disk-space using mode
> especially for resource restricted environments like embedded
> environments. (Contributed by Ed Schouten. Thanks)
> - Fixed a mtx lock issue happened with nullfs.
> - Fixed lock issues around unionfs.
> - Added NULL check code pointed out by Coverity. (Pointed out
> by Stanislav Sedov. Thanks)
> The documents of those unionfs patches:
> http://people.freebsd.org/~daichi/unionfs/ (English)
> http://people.freebsd.org/~daichi/unionfs/index-ja.html (Japanese)
> Request for Test:
> Unionfs lovers including FreeSBIE developers, ports cluster managers,
> heavy memory-fs users and folks use unionfs, could you try p19 please?
> Merge plan:
> I have plan to commit unionfs-p19-20070504.diff to -current after
> received unionfs users responses.
> I am going to join BSDCan 2007. Lets meet at Ottawa, Canada :)
> Daichi GOTO, http://people.freebsd.org/~daichi
So far I've tested it under -current, in my diskless env. where
/etc & /compat/linux are unionfs'ed with a mfs, and so all seems OK.
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