Hello, marcel, Below is the email sent to the ceph-users mail list regarding ceph class question, but seems it's in pending state since I am not the member of that list. >> Hello, I found the document of ceph class usage is very few, below is the only one which can almost address my needs-- http://ceph.com/rados/dynamic-object-interfaces-with-lua/ But still some questions confusing me left there: 1. How to make the OSD to load the class lib? or what's the process for an OSD deamon to load a customized class lib? I checked my OSD log file(/var/log/ceph/ceph-osd.2. log), I can't find the log message "loading cls_hello", does that mean the "hello" class lib hasn't been loaded by the osd deamon yet? But I can see the 'libcls_hello.so' is really under /usr/lib64/rados-classes folder of that OSD. 2. Suppose I have an object named "testobj" stored into OSD0 and OSD1, what will happen if I call the rados_exec(..., "testobj", "hello", "say_hello",...) in client side? Will the say_hello() function be called twice in OSD0 and OSD1 respectively? On Thu, Jan 29, 2015 at 4:14 PM, Dennis Chen <kernel.org.gnu@xxxxxxxxx> wrote: > Hello marcel, > > Very good article though I am still reading it. Do you have a clear > picture of the relationship between class and > librados API - rados_exec()? > > On Wed, Jan 28, 2015 at 4:48 AM, Marcel Lauhoff <ml@xxxxxxxx> wrote: >> >> Hi, >> >> I wrote an article about the object store API - How it works and looks >> like with a focus on how to add something new. >> >> http://irq0.org/articles/ceph/objectstore >> >> Maybe its useful for somebody.. Feedback is greatly appreciated! >> >> >> >> [ I'm working on a Master's Thesis about Cold Storage / Archives using Ceph >> and will probably write something more about other parts of Ceph >> crossing my way in the near future :) ] >> >> >> ~marcel >> >> >> -- >> Marcel Lauhoff >> Mail/XMPP: ml@xxxxxxxx >> http://irq0.org >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > Den -- Den -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
