[ I am not subscribed, so please keep me in CC. I'll just reply to myself, sorry for breaking the threading. ] Peter Rajnoha wrote: > For now, these flags are only documented directly in libdevmapper.h > (as they were only meant to direct udev rules and these situations > were all audited directly by communicating with other teams). I could > probably add a few lines to the man page directly though as others > could use this even when reading udev database... That would be great! > However, for your purpose, I'd better use > DM_UDEV_DISABLE_OTHER_RULES_FLAG which just tells that everything else > other than DM/LVM related should skip this device. Hmm, DM_UDEV_DISABLE_OTHER_RULES_FLAG is (now) set for thin volumes, as far as I can tell. This is what lead me down this rabbit hole in the first place: UDisks2 _does_ ignore events for nodes with DM_UDEV_DISABLE_OTHER_RULES_FLAG set, and since Fedora 20, this causes it to ignore thin volumes. The use of DM_UDEV_DISABLE_OTHER_RULES_FLAG or any other such flag in UDisks2 looked like a ugly hack to me, so I started looking for alternatives. The best option seemed to be to ignore any DISABLE flag in UDisks, and to set UDISKS_IGNORE for LVM2 block devices that do not have the /dev/VG/LV symlink. Now you say that DM_UDEV_DISABLE_OTHER_RULES_FLAG is actually the Right Way, but it seems to be buggy re thin volumes. Correct? (Of course, UDisks2 should not ignore _events_ but should ignore _nodes_. Otherwise, it will get confused when a node acquires a DISABLE flag later on, which happens to thin pools. What a mess! :-) _______________________________________________ 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/
