>>>>> "Mike" == Mike Snitzer <snitzer@xxxxxxxxxx> writes: Mike, Mike> You're suggesting that when the DM multipath device's limits are Mike> stacked up from the underlying devices: cap the mpath's Mike> max_hw_sectors to the underlying devices' max_sectors? That will break SG_IO, firmware upgrades, etc. (things you probably shouldn't do on the MP device in the first place but which users often do). However, doesn't it make more sense to tweak limits on DM device instead of the underlying ones? It seems a bit counter-intuitive to me to change max_sectors_kb on a different device than the one where the filesystem whose max I/O size you want to change is located. I guess this brings us back to the desire to be able to restack the limits at will when something changes somewhere... -- Martin K. Petersen Oracle Linux Engineering -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
