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Thanks for your feedback. In fact meta xlator is loaded only on fuse mount, is there any particular reason to not to use meta-autoload xltor for nfs server and libgfapi ? Regards Rafi KC On 07/26/2016 04:05 PM, Niels de Vos
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On Tue, Jul 26, 2016 at 12:43:56PM +0530, Kaushal M wrote:On Tue, Jul 26, 2016 at 12:28 PM, Prashanth Pai <ppai@xxxxxxxxxx> wrote:+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.+1 for making use of the meta-xlator. We should be making more use of it.Indeed, this would be nice. Maybe this can also expose the memory allocations like /proc/slabinfo. The io-stats xlator can dump some statistics to /var/log/glusterfs/samples/ and /var/lib/glusterd/stats/ . That seems to be acceptible too, and allows to get statistics from server-side processes without involving any clients. HTH, Niels3) 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-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 |
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