> > 1. Was it wrong to run 'multipath 2 round-robin 1 0 /dev/sda > round-robin 1 0 /dev/sdb'? The multipath command just don't understand these parameters. This is a map as seen by the DM kernel driver. You can feed it to dmsetup(8), not to multipath(8). > 2. If I don't supply any parameters, how does the dm know which > devices are the same physical device (that /dev/sda & /dev/sdb are > the same physical device)? Because it scans the paths for unique LU ids, then coalesce. > 3. How are the priority groups defined if no parameters are supplied? User defines, through config file. > 4. What is the timeout for a device that has failed? When does the dm > move to the next priority group? > When secondary PG priority becomes higher than the active PG priority, modulo user-define delay or user-define disabling. Or when all paths in the active PG have failed. Regards, cvaroqui -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
