Your UPS won't accept a timer value to wait before actually cutting power? That would probably be ideal, issue the power off command with something like a 30 second timeout, which would give the system time to power off cleanly first. -Tim Niccolo Rigacci wrote: > Hello, > > I'm facing this problem: > > when my Linux box detects a POWER FAIL event from the UPS, it > starts a normal shutdown. Just before the normal kernel poweroff, > it sends to the UPS a signal on the serial line which says > "cut-off the power to the server and switch-off the UPS". > > This is required to reboot the server as soon as the power is > restored. > > The problem is that the root partition is on top of a RAID-1 > filesystem which is still mounted when the program that kills the > power is run, so the system goes down with a non clean RAID > volume. > > What can be the proper action to do before killing the power to > ensure that RAID will remain clean? It seems that remounting > the partition read-only is not sufficient. > > - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
