[rocky][cinder][lvm] VM LVM leakage to packstack host OS
Alan Davis
alan.davis at apogee-research.com
Fri Aug 13 16:49:25 UTC 2021
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 at 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
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