Richard, I compared the libzfs_jni source code and they're pretty different from what we're doing. libzfs_jni is essentially a jni wrapper to (yet?) another set of zfs-related programs written in C. zfs for Java, on the other hand, is a Java wrapper to the functionality of (and only of) libzfs. I suppose that libzfs_jni capabilities could be implemented on top of zfs for java but the approach is pretty different: the main difference is the purpose of the exposed methods: libzfs is the interface to ZFS and its methods are low level while libzfs_jni exposes a set of operations which are coarse grained and targeted to management.
Nevertheless, the functionality provided by libzfs_jni is interesting and I'd like to build something similar by using zfs for java. Personally, I'm doing this for two reasons: having a libzfs wrapper for Java seems like a good thing to have and I'd like to use to build some management interfaces (such as web but not only) instead on having to rely on shell scripting with zfs and zpool commands. I'll keep an eye to libzfs_jni. Now, to return to the original question, I haven't found a way to correlate libzfs.h versions (and dependencies) to Nevada releases. At the moment, I'm willing to extract information from a sysinfo call (any suggestion about a better way?) and the next step, whose logic I'm missing, is how to correlate this information with to a concrete libzfs.h version from openGrok: maybe it's just trivial, but I do not find it. Have you got some information to help me address this problem? Thanks, Enrico On Fri, Sep 11, 2009 at 12:53 AM, Enrico Maria Crisostomo <enrico.m.crisost...@gmail.com> wrote: > On Fri, Sep 11, 2009 at 12:26 AM, Richard Elling > <richard.ell...@gmail.com> wrote: >> On Sep 10, 2009, at 1:03 PM, Peter Tribble wrote: >>> >>> On Thu, Sep 10, 2009 at 8:52 PM, Richard Elling >>> <richard.ell...@gmail.com> wrote: >>>> >>>> Enrico, >>>> Could you compare and contrast your effort with the existing libzfs_jni? >>>> >>>> http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libzfs_jni/common/ >>> >>> Where's the source for the java code that uses that library? >> >> Excellent question! It is used for the BUI ZFS manager webconsole that >> comes with S10 and SXCE. So you might find the zfs.jar as >> /usr/share/webconsole/webapps/zfs/WEB-INF/lib/zfs.jar >> The jar only contains the class files, though. > Yes, that's what I thought when I saw it. Furthermore, the last time I > tried it was still unaligned with the new ZFS capabilites: it crashed > because of an unknown gzip compression type... > >> >> Someone from Sun could comment on the probability that they >> will finally get their act together and have a real BUI framework for >> systems management... they've tried dozens (perhaps hundreds) >> of times, with little to show for the effort :-( > By the way, one of the goals I'd like to reach with such kind of > library is just that: putting the basis for building a java based > management framework for ZFS. Unfortunately wrapping libzfs will > hardly fulfill this goal and the more I dig into the code the more I > realize that we will need to wrap (or reimplement) some of the logic > of the zfs and zpool commands. I'm also confident that building a good > library on top of this wrapper will give us a very powerful tool to > play with from Java. > >> -- richard >> >> > > > > -- > Ελευθερία ή θάνατος > "Programming today is a race between software engineers striving to > build bigger and better idiot-proof programs, and the Universe trying > to produce bigger and better idiots. So far, the Universe is winning." > GPG key: 1024D/FD2229AF > -- Ελευθερία ή θάνατος "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." GPG key: 1024D/FD2229AF _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
