Hello, further information. I discovered that sometimes restarting cinder services with netapp nfs drivers, it tries to change ownership of .snapshot directories : chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot/hourly.2021-07-27_0605/volume-d7f7cc60-82f6-4afc-865c-5d9e668351ba': Read-only file system chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot/hourly.2021-07-27_0605/volume-058967e6-4341-4923-8587-ead4a877a42f': Read-only file system chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot/hourly.2021-07-27_0605/volume-4ab4fa84-32b1-451a-8447-0baae69190ff': Read-only file system chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot/hourly.2021-07-27_0605/volume-b4b6123e-0548-4755-87fd-be982bcca282': Read-only file system chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot/hourly.2021-07-27_0605/volume-012738e1-0df6-418d-8a72-ce55ea992dd0': Read-only file system chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot/hourly.2021-07-27_0605/volume-afe7291a-b9e9-49b3-8037-caee0362a808': Read-only file system chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot/hourly.2021-07-27_0605': Read-only file system chown: changing ownership of '/var/lib/cinder/mnt/b36168a69e993d67635862db6ab238d1/.snapshot': Read-only file system Of course it cannot do it. Could be this the problem ? Ignazio Il giorno lun 26 lug 2021 alle ore 19:36 Ignazio Cassano < ignaziocassano@xxxxxxxxx> ha scritto: > Hello All, > I am playing witk kolla wallaby on ubuntu 20.04. > When I add a new backend type, volume container stop to work and continue > to restarting and all instances are stopped. > I can solve only restarting one controller at a time. > This morning I had cinder configurated for nfs netapp with 24 instances > running. > I added the ceph backend in globals.yml and all configurations suggested > in /etc/kolla/config. > Then I launched kolla-ansible deploy. > No errors occurred in deployment but all instances went in stopped state > and cinder service-list reported nfs backend down. Cinder volume container > remained in restarting. > Only restarting one controller at a time cinder volume started and then I > was able ti use cinder with ceph and nfs. > Seems it happens every time I modify cinder. > Any suggestion, please? > Ignazio > > > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx