All, I have an issue with LVM on a rocky packstack installation where the LVM constructs inside the VMs running on the server "leak" into the host OS LVM configuration. Here's the listing of the errors from the OS: [root@stack2 log(keystone_apg-project)]# pvs WARNING: Device for PV ILdbcY-VFCm-fnH6-Y3jc-pdWZ-fnl8-PH3TPe not found or rejected by a filter. WARNING: Device for PV yZy8Xk-foKT-ovjV-0EZv-VxEM-GqiP-WH7k53 not found or rejected by a filter. Couldn't find device with uuid ILdbcY-VFCm-fnH6-Y3jc-pdWZ-fnl8-PH3TPe. Couldn't find device with uuid yZy8Xk-foKT-ovjV-0EZv-VxEM-GqiP-WH7k53. PV VG Fmt Attr PSize PFree /dev/md0 cinder-volumes lvm2 a-- <9.10t 4.87t /dev/sdaa pub_vg lvm2 a-- <250.00g 0 /dev/sdac apg-git-encrypted_vg lvm2 a-- <30.00g 0 /dev/sdah encrypted_vg lvm2 a-- <60.00g <60.00g /dev/sdb2 centos_stack2 lvm2 a-- 74.00g 0 [unknown] encrypted_vg lvm2 a-m <60.00g 0 [unknown] encrypted_vg lvm2 a-m <100.00g <100.00g Here are the current cinder.conf lines that seem relevant: # Type of LVM volumes to deploy; (default, thin, or auto). Auto defaults to # thin if thin is supported. (string value) # Possible values: # default - <No description provided> # thin - <No description provided> # auto - <No description provided> lvm_type = default # LVM conf file to use for the LVM driver in Cinder; this setting is ignored if # the specified file does not exist (You can also specify 'None' to not use a # conf file even if one exists). (string value) #lvm_conf_file = /etc/cinder/lvm.conf # Suppress leaked file descriptor warnings in LVM commands. (boolean value) #lvm_suppress_fd_warnings = false I think there are several things going on here : duplicate VG names causing LVM to see UUID/name conflicts and "leakage" of LVM data that cinder should be managing to the OS level. What do I need to change in my configuration to fix this and avoid problems in the future? Thanks -- Alan Davis Principal System Administrator Apogee Research LLC Office : 571.384.8941 x26 Cell : 410.701.0518