Hello, So I am able to install Ceph on CentOS 7.4 and I can successfully integrate my Openstack testbed with it. However, I am facing with an issue recently where after deleting stack, my cinder volumes are not getting deleted and they are getting stuck. Any idea on this issue? Best Regards, Ruchir Nerurkar 857-701-3405 From: Götz Reinicke &lt;goetz.reinicke(a)filmakademie.de&gt; Sent: Monday, August 12, 2019 1:17 PM To: Nerurkar, Ruchir (Nokia - US/Mountain View) &lt;ruchir.nerurkar(a)nokia.com&gt; Cc: ceph-users(a)ceph.io Subject: Re: [ceph-users] Request to guide on ceph-deploy install command for luminuous 12.2.12 release Hi, Am 07.08.2019 um 20:20 schrieb Nerurkar, Ruchir (Nokia - US/Mountain View) <ruchir.nerurkar@nokia.com<mailto:ruchir.nerurkar@nokia.com>>: Hello, I work in Nokia as a Software QA engineer and I am trying to install Ceph on centOS 7.4 version. Do you have to stick at 7.4? But I am getting this error with the following output: - vmgoscephcontrollerluminous][WARNIN] Error: Package: 2:ceph-common-12.2.12-0.el7.x86_64 (Ceph) [mvmgoscephcontrollerluminous][WARNIN] Requires: liblz4.so.1()(64bit) [mvmgoscephcontrollerluminous][WARNIN] Error: Package: 2:ceph-osd-12.2.12-0.el7.x86_64 (Ceph) [mvmgoscephcontrollerluminous][WARNIN] Requires: liblz4.so.1()(64bit) [mvmgoscephcontrollerluminous][WARNIN] Error: Package: 2:ceph-base-12.2.12-0.el7.x86_64 (Ceph) [mvmgoscephcontrollerluminous][WARNIN] Requires: gperftools-libs >= 2.6.1 [mvmgoscephcontrollerluminous][WARNIN] Available: gperftools-libs-2.4-8.el7.i686 (base) [mvmgoscephcontrollerluminous][DEBUG ] You could try using --skip-broken to work around the problem [mvmgoscephcontrollerluminous][WARNIN] gperftools-libs = 2.4-8.el7 [mvmgoscephcontrollerluminous][WARNIN] Error: Package: 2:ceph-mon-12.2.12-0.el7.x86_64 (Ceph) [mvmgoscephcontrollerluminous][WARNIN] Requires: liblz4.so.1()(64bit) [mvmgoscephcontrollerluminous][WARNIN] Error: Package: 2:ceph-base-12.2.12-0.el7.x86_64 (Ceph) [mvmgoscephcontrollerluminous][WARNIN] Requires: liblz4.so.1()(64bit) [mvmgoscephcontrollerluminous][DEBUG ] You could try running: rpm -Va --nofiles --nodigest [mvmgoscephcontrollerluminous][ERROR ] RuntimeError: command returned non-zero exit status: 1 [ceph_deploy][ERROR ] RuntimeError: Failed to execute command: yum -y install ceph ceph-radosgw Does anyone know about this issue like how can I resolve package dependencies? My first shot: Update Centos to min. 7.5 (which includes gperftools-libs-2.6.1) And install lz4 too. Regards . Götz