2015-06-05 16:04 GMT+08:00 Zdenek Kabelac <zkabelac@redhat.com>: > The problem with rename is - > > you have device 'lv1' you rename it to 'lv2' - yet > those who opened device with the name 'lv1' still thinks > the 'lv1' device exits. > > So for safety reason before you 'reuse' any existing name in-use, > there should be 'deactivating' such device first - so there is no 'race' in > name usage. > > It's even possible we miss to track full history of active renamed device. > > Since you get into strange scenarios when you start to count > with udev event handling and link generating here - it's getting nearly > impossible to synchronize this properly... Does that mean, if I can confirm that there's no program using the device name, then it's safe to rename an active device? The devices I want to rename are internal volumes. I think that there's no user space program using these names, except LVM. There's a typo error in my previous message. The 2nd subLV is "vg1-lv1_child2", not "vg1-lv2_child2" # dmsetup ls --tree vg1-lv1 (253:3) ├─ vg1-lv1_child1 (253:1) └─ vg1-lv1_child2 (253:2) _______________________________________________ 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/
