+1 to option (2) which similar to echoing into /proc/sys/vm/drop_caches -Prashanth Pai ----- Original Message ----- > From: "Mohammed Rafi K C" <rkavunga@xxxxxxxxxx> > To: "gluster-users" <gluster-users@xxxxxxxxxxx>, "Gluster Devel" <gluster-devel@xxxxxxxxxxx> > Sent: Tuesday, 26 July, 2016 10:44:15 AM > Subject: [Gluster-devel] Need a way to display and flush gluster cache ? > > Hi, > > Gluster stack has it's own caching mechanism , mostly on client side. > But there is no concrete method to see how much memory are consuming by > gluster for caching and if needed there is no way to flush the cache memory. > > So my first question is, Do we require to implement this two features > for gluster cache? > > > If so I would like to discuss some of our thoughts towards it. > > (If you are not interested in implementation discussion, you can skip > this part :) > > 1) Implement a virtual xattr on root, and on doing setxattr, flush all > the cache, and for getxattr we can print the aggregated cache size. > > 2) Currently in gluster native client support .meta virtual directory to > get meta data information as analogues to proc. we can implement a > virtual file inside the .meta directory to read the cache size. Also we > can flush the cache using a special write into the file, (similar to > echoing into proc file) . This approach may be difficult to implement in > other clients. > > 3) A cli command to display and flush the data with ip and port as an > argument. GlusterD need to send the op to client from the connected > client list. But this approach would be difficult to implement for > libgfapi based clients. For me, it doesn't seems to be a good option. > > Your suggestions and comments are most welcome. > > Thanks to Talur and Poornima for their suggestions. > > Regards > > Rafi KC > > _______________________________________________ > Gluster-devel mailing list > Gluster-devel@xxxxxxxxxxx > http://www.gluster.org/mailman/listinfo/gluster-devel > _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://www.gluster.org/mailman/listinfo/gluster-users
