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 <[email protected]> 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: [email protected] > [mailto:[email protected]] 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 <[email protected]> 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:[email protected]] >> 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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