> Let's try to clear up the confusion. > > Kernel device-mapper (which lvm uses) does not support write barriers > except in very restricted circumstances (when only one device is > involved and the mapping is trivial). If dm receives a write barrier > which is not supported it notifies the caller (typically a filesystem) > so appropriate action can be taken if it wishes. Does that mean I should never use more than one device if I have applications depending on fsync (databases)? - 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/
