What is your ceph-deploy version ? We saw ceph-deploy is trying to use the following command.. Running command: sudo apt-get -q remove -f -y --force-yes --purge ceph ceph-mds ceph-common ceph-fs-common librados2 I manually tried this while uninstalling librados2 and I saw it tried to remove libvirt-bin* Thanks & Regards Somnath -----Original Message----- From: Travis Rhoden [mailto:trhoden@xxxxxxxxx] Sent: Wednesday, February 25, 2015 4:46 PM To: Somnath Roy Cc: Sage Weil; Ceph Development Subject: Re: librados2 and librbd1 dependency on libvirt-bin Hi Somnath, My first attempt at this showed the expected behavior. I have to Trusty vms. I'm using trusty1 as an admin node for trusty2, which I am install ceph and libvirt. root@trusty1:~# ceph-deploy new trusty2 .... root@trusty1:~# ceph-deploy install trusty2 (this successfully installs Giant) root@trusty1:~# ssh trusty2 root@trusty2:~# apt-get install libvirt-bin .... root@trusty2:~# dpkg -l | egrep '(ceph|libvirt|rados|rbd)' ii ceph 0.87.1-1trusty amd64 distributed storage and file system ii ceph-common 0.87.1-1trusty amd64 common utilities to mount and interact with a ceph storage cluster ii ceph-fs-common 0.87.1-1trusty amd64 common utilities to mount and interact with a ceph file system ii ceph-mds 0.87.1-1trusty amd64 metadata server for the ceph distributed file system ii libcephfs1 0.87.1-1trusty amd64 Ceph distributed file system client library ii librados2 0.87.1-1trusty amd64 RADOS distributed object store client library ii librbd1 0.87.1-1trusty amd64 RADOS block device client library ii libvirt-bin 1.2.2-0ubuntu13.1.9 amd64 programs for the libvirt library ii libvirt0 1.2.2-0ubuntu13.1.9 amd64 library for interfacing with different virtualization systems ii python-ceph 0.87.1-1trusty amd64 Python libraries for the Ceph distributed filesystem root@trusty2:~# exit All looks good on trusty2. Now we do the purge: root@trusty1:~# ceph-deploy purge trusty2 .... ( I'm happy to fpaste this output if you want to see it) Go back to trusty2 and see what's left: root@trusty2:~# dpkg -l | egrep '(ceph|libvirt|rados|rbd)' ii libcephfs1 0.87.1-1trusty amd64 Ceph distributed file system client library ii librados2 0.87.1-1trusty amd64 RADOS distributed object store client library ii librbd1 0.87.1-1trusty amd64 RADOS block device client library ii libvirt-bin 1.2.2-0ubuntu13.1.9 amd64 programs for the libvirt library ii libvirt0 1.2.2-0ubuntu13.1.9 amd64 library for interfacing with different virtualization systems ii python-ceph 0.87.1-1trusty amd64 Python libraries for the Ceph distributed filesystem The ceph libraries and libvirt are all still there. This is the expected behavior. - Travis On Wed, Feb 25, 2015 at 4:30 PM, Somnath Roy <Somnath.Roy@xxxxxxxxxxx> wrote: > Thanks Travis.. > Here it is.. > > Ceph is giant. > Libvirt is from Ubuntu 14.04 repo only... > > ems@emsnode4:~$ sudo dpkg -l | grep libvirt* > ii libvirt-bin 1.2.2-0ubuntu13.1.9 amd64 programs for the libvirt library > ii libvirt0 1.2.2-0ubuntu13.1.9 amd64 library for interfacing with different virtualization systems > ems@emsnode4:~$ sudo dpkg -l | grep ceph-deploy > ii ceph-deploy 1.5.21 all Ceph-deploy is an easy to use configuration tool > ems@emsnode4:~$ > ems@emsnode4:~$ ceph-deploy --version > 1.5.21 > ems@emsnode4:~$ > > Regards > Somnath > > -----Original Message----- > From: ceph-devel-owner@xxxxxxxxxxxxxxx > [mailto:ceph-devel-owner@xxxxxxxxxxxxxxx] On Behalf Of Travis Rhoden > Sent: Wednesday, February 25, 2015 4:23 PM > To: Somnath Roy > Cc: Sage Weil; Ceph Development > Subject: Re: librados2 and librbd1 dependency on libvirt-bin > > Somnath, > > Just so I can try to recreate fully, can you also tell me the version of Ceph you are using, the version of ceph-deploy (previously mentioned), and the version of libvirt? For example, if you have the Juno cloud-archive enabled or anything. > > - Travis > > On Wed, Feb 25, 2015 at 3:36 PM, Somnath Roy <Somnath.Roy@xxxxxxxxxxx> wrote: >> Thanks Sage ! >> But, I think this is a serious issue, every time we will purge the >> cluster all the node network will be down :-( Basically, it should not delete any component on which non-ceph components are dependent. >> We need this purge-lite kind of stuff. >> >> Thanks & Regards >> Somnath >> >> -----Original Message----- >> From: Sage Weil [mailto:sage@xxxxxxxxxxxx] >> Sent: Wednesday, February 25, 2015 3:21 PM >> To: Somnath Roy >> Cc: Ceph Development >> Subject: Re: librados2 and librbd1 dependency on libvirt-bin >> >> On Wed, 25 Feb 2015, Somnath Roy wrote: >>> Hi, >>> We are facing problem that ceph-deploy purge is uninstalling latest Mellanox ofed driver packages. >>> Digging down more we found libvirt-bin is dependent on librados2/librbd1. >>> So, here is what happening. >>> >>> 1. Mellanox ofed driver has a dependency on the libvirt-bin* >>> >>> 2. purging librados2/librbd1 is removing libvirt-bin and resulting the removal of the Mellanox driver package as well. >>> >>> Here is what I found. >>> >>> http://packages.ubuntu.com/trusty/devel/libvirt-bin >>> >>> ubuntu@ip-10-15-16-211:~$ apt-cache rdepends librados2 [...] >> >> The problem is that libvirt (and probably qemu) are built against librbd1. >> If you remove librbd1, those get removed too. >> >>> So, I am curious why libvirt-bin has a depencey on librados2/librbd1 ? >> >> qemu needs it for obvious reasons. libvirt needs it to manage it's >> (rbd) storage pools. >> >>> Also, how come we get rid of this issue ? >>> Ceph-deploy should not remove any package other than ceph's. >> >> Purge could skip the libraries that may have other dependencies, but then it's a purge-lite. Honestly I thought it skipped them for that reason but we probably changed it at some point because it (also confusingly) wouldn't remove librados etc... >> >> sage >> >> >> ________________________________ >> >> PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. If the reader of this message is not the intended recipient, you are hereby notified that you have received this message in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. 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