Hi everybody, I'm facing to some problems in my virtualization cluster and i need some help to prevent it occurring again. I know that LVM is not cluster aware and we have to use it with lot of caution. However, i have a shared LVM storage between 6 nodes. I use KVM hosts. Two days ago i rebooted my whole cluster in order to get the same LVM metadata and the same dmsetup table over the cluster. That's ok. "vgck SATA6To" is ok. Right now, I have a problem when deleting an LV. On the node where the VM lives, i did the lvremove command (lv name : SATA6To/vm-306-disk-3), i have a good state of LVM : node5:~# lvdisplay -C | grep -- "-306" vm-306-disk-1 SATA6To -wi-ao 10.00G vm-306-disk-2 SATA6To -wi-ao 5.00G node5:~# dmsetup table | grep -- "-306" SATA6To-vm--306--disk--1: 0 20971520 linear 152:16 2231370112 SATA6To-vm--306--disk--2: 0 10485760 linear 152:16 2252341632 node5:~# ls /dev/SATA6To/vm-306-disk-* /dev/SATA6To/vm-306-disk-1 /dev/SATA6To/vm-306-disk-2 node5:~# ls /dev/mapper/SATA6To-vm--306--disk--* /dev/mapper/SATA6To-vm--306--disk--1 /dev/mapper/SATA6To-vm--306--disk--2 If i did a "vgscan or lvscan" on the rest of the cluster, LVM well sees that the LV has been removed, however device-mapper still have devices for it : node3:~# lvdisplay -C | grep -- "-306" vm-306-disk-1 SATA6To -wi-a- 10.00G vm-306-disk-2 SATA6To -wi-a- 5.00G node3:~# dmsetup table | grep -- "-306" SATA6To-vm--306--disk--1: 0 20971520 linear 152:32 2231370112 SATA6To-vm--306--disk--3: 0 8388608 linear 152:32 2262827392 SATA6To-vm--306--disk--2: 0 10485760 linear 152:32 2252341632 node3:~# ls /dev/SATA6To/vm-306-disk-* /dev/SATA6To/vm-306-disk-1 /dev/SATA6To/vm-306-disk-2 /dev/SATA6To/vm-306-disk-3 node3:~# ls /dev/mapper/SATA6To-vm--306--disk--* /dev/mapper/SATA6To-vm--306--disk--1 /dev/mapper/SATA6To-vm--306--disk--3 /dev/mapper/SATA6To-vm--306--disk--2 Any idea how to clear all references to the LV previously removed ? And by the way, the good way to do the best practices when i change something in LVM and to take it in account in the other nodes ? Is it advised to disable lvm cache (/etc/lvm/cache/.cache) ? Thank you for your precious help ! Germain _______________________________________________ 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/
