I hope I'm not spamming and irritating the list with all this, my apologies if its all old hat. I recreated my gluster 2 disk replica store with ext4 using a 5GB SSD journal for each journal. So far it seems to be a huge improvement. VM start up's still trigger 5-10% iowait, but I presume that sustained reads which the cache wouldn't help so much with. However general operation of 5 VDI windows vm's (Developer machines) is much improved with wait times averaging round 0-3% and over responsiveness very good. Which leads me to my inevitable questions :) - Journal size. I actually have up to 55GB of SSD spare. Is there any point in increasing the SSD journal size over 5GB? the ext4 disk is 3TB (Western Digital Red) - ext4 creation options. Any recommenced options there? - ext4 mount options. Recommend options? I'm using "noatime,nodiratime" - Would it be a real bad idea to mount with: * write back cache enabled * nobarrier At the moment this is a test system so I can rebuild without issues, though copying the test VM's takes a few hours. thanks, -- Lindsay _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://supercolony.gluster.org/mailman/listinfo/gluster-users
