I have a RAID5 plugin that is also used with clustering. I open the raid device (created in device-mapper) using the O_SYNC and O_DIRECT flags, but it seems to read the data from a cache somewhere. I put a printk in my plugin map function, but it doesn't get hit. If another node in the cluster changes the data on the disk, it never gets refreshed on this node because of the caching. Is there any way to turn off the caching so that all read requests come to my plugin? And where is the caching taking place? Thanks, Allen Allen Jack email - ajack@xxxxxxxxxx Novell, Inc., the leading provider of information solutions http://www.novell.com -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
