Hi Donny and team,
This is the output of lvs and vgdisplay.
I have tried reinstall my OS with different storage size (60G and 80G) both setup also got problem openstack to create new instance error with the volume and similar output where
storage of cinder is too small.... even when I extend cinder volume and the size has been extended, still got volume error when trying to spin new vm... all this is new deployment.
May I know how to resolve this...I want to test openstack. Thank you

lvs
  LV                  VG             Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  home                centos         -wi-ao----  23.33g
  root                centos         -wi-ao---- <47.79g
  swap                centos         -wi-ao----  <7.88g
  cinder-volumes-pool cinder-volumes twi-aotz--  19.57g             0.00   10.55

vgdisplay
  --- Volume group ---
  VG Name               cinder-volumes
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  17
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               0
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               50.59 GiB
  PE Size               4.00 MiB
  Total PE              12952
  Alloc PE / Size       5020 / <19.61 GiB
  Free  PE / Size       7932 / 30.98 GiB
  VG UUID               LUenAt-0zrU-42HE-dmc3-bb2e-g4bi-HFDOTA

  --- Volume group ---
  VG Name               centos
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               <79.00 GiB
  PE Size               4.00 MiB
  Total PE              20223
  Alloc PE / Size       20222 / 78.99 GiB
  Free  PE / Size       1 / 4.00 MiB
  VG UUID               CKC4EU-9qXu-m77Z-x1O4-S0Rq-eLdZ-VczPOb

On Sun, Sep 6, 2020 at 4:22 AM Donny Davis <donny@fortnebula.com> wrote:
What is the output of lvs? Also what size block device are you trying to create?

Donny Davis
c: 805 814 6800

On Sat, Sep 5, 2020, 12:27 PM dangerzone ar <dangerzonen@gmail.com> wrote:
Hi, my clean install openstack queens are not able to create simple instance. Got error

Error: Failed to perform requested operation on instance "test1", the instance has an error status: Please try again later [Error: Build of instance 18c607fd-e919-4022-be7d-d178d7ab410e aborted: Volume 8a3b3e80-1593-46e5-8aa8-a5083bfbb46f did not finish being created even after we waited 9 seconds or 4 attempts. And its status is error.].

Filesystem               Size  Used Avail Use% Mounted on
devtmpfs                 3.9G     0  3.9G   0% /dev
tmpfs                    3.9G  4.0K  3.9G   1% /dev/shm
tmpfs                    3.9G   25M  3.8G   1% /run
tmpfs                    3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/mapper/centos-root   48G   34G   15G  71% /
/dev/sda1               1014M  182M  833M  18% /boot
/dev/mapper/centos-home   24G   33M   24G   1% /home
tmpfs                    783M     0  783M   0% /run/user/1000
/dev/loop1               1.9G  6.1M  1.7G   1% /srv/node/swiftloopback
tmpfs                    783M     0  783M   0% /run/user/0

pvs
  PV         VG             Fmt  Attr PSize   PFree
  /dev/loop0 cinder-volumes lvm2 a--  <20.60g 1012.00m
  /dev/sda2  centos         lvm2 a--  <79.00g    4.00m

vgs
  VG             #PV #LV #SN Attr   VSize   VFree
  centos           1   3   0 wz--n- <79.00g    4.00m
  cinder-volumes   1   1   0 wz--n- <20.60g 1012.00m

seems my cinder volume no free space. I install VM with 80G storage but cinder volume no space.
I tried extend cinder volume as follows

lvm vgextend "cinder-volumes" /dev/loop3
  Physical volume "/dev/loop3" successfully created.
  Volume group "cinder-volumes" successfully extended
pvscan
  PV /dev/loop0   VG cinder-volumes   lvm2 [<20.60 GiB / 1012.00 MiB free]
  PV /dev/loop3   VG cinder-volumes   lvm2 [<30.00 GiB / <30.00 GiB free]
  PV /dev/sda2    VG centos           lvm2 [<79.00 GiB / 4.00 MiB free]
  Total: 3 [<129.59 GiB] / in use: 3 [<129.59 GiB] / in no VG: 0 [0   ]


vgs
  VG             #PV #LV #SN Attr   VSize   VFree
  centos           1   3   0 wz--n- <79.00g  4.00m
  cinder-volumes   2   1   0 wz--n-  50.59g 30.98g

When try to create new instance I keep getting the same volume error... Please help and advise what should I do...Please help...why 80G still not enough for cinder volume. 

Appreciate help. Thank you