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