> > Does that mean I should never use more than one device if I have > > applications depending on fsync (databases)? > > It just means that write barriers won't get passed to the device. > This is only a problem if the devices have write caches. But fsync is implemented using 'write barriers' - so fsync does not work? After fsync, all data should be sent from the OS to the disk controller: a.) this work perfectly using LVM? b.) this does not work at all using LVM? c.) it works when you use one single physical drive with LVM? I am confused. The thread on the postfix list claims that it does not work at all? - Dietmar _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
