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    CEPH FS Storage Driver

    Scheduled Pinned Locked Moved Development
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    • olivierlambertO Offline
      olivierlambert Vates 🪐 Co-Founder CEO
      last edited by

      Note that all are hacks are won't survive any upgrade and aren't supported 😉 But it's fine for a proof of concept.

      1 Reply Last reply Reply Quote 0
      • R Offline
        r1 XCP-ng Team
        last edited by r1

        Agree - unless we have enough interest from community to pack it or make it maintainable, it will stay a hack.

        Also mentioning the command to apply patch # patch -d/ -p1 < cephfs-8.patch

        Edit : updated patch strip level

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        • R Offline
          Rainer
          last edited by Rainer

          Hello and thanks for the new patch. I understand that this is only a kind of hack or better a proof of concept. I do not want to use this for a productive system but only wanted to give it a try with nautilus and see what performance I can expect if this hack hopefully develops to a supported integration of Ceph.

          I hoped that the patch might work for XCP-ng 8.0 as well but it seems it does not that easily. So I could also install a xenserver 7.6 and use the original patch and test how it works for me. I do not want you to invest too much work in the 8.0 adoption. So if you think testing the patch 8.0 does not really help you in any way, then please do not hesitate and tell me. Else if you are as well interested to test if it works with 8.0 here is what I found out:

          The new patch does not work completely, there is a "patch unexpectedly ends in middle of line" -warning. On a fresh installed system:

          # cd /
# patch --verbose -p0  < /cephfs-8.patch
mm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|--- /opt/xensource/sm/nfs.py   20199-27 16:45:11.918853933 +0530
|+++ /opt/xensource/sm/nfs.py   20199-27 16:49:26.910379515 +0530
--------------------------
patching file /opt/xensource/sm/nfs.py
Using Plan A...
Hunk #1 succeeded at 137.
Hunk #2 succeeded at 159.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|--- /opt/xensource/sm/NFSSR.py 20199-27 16:44:56.437557255 +0530
|+++ /opt/xensource/sm/NFSSR.py 20199-27 17:07:45.651188670 +0530
--------------------------
patching file /opt/xensource/sm/NFSSR.py
Using Plan A...
Hunk #1 succeeded at 137.
Hunk #2 succeeded at 160.
patch unexpectedly ends in middle of line
Hunk #3 succeeded at 197 with fuzz 1.
done

          I can do a ceph.mount just like described before but when I instead try to create a new Ceph-FS-SR named "Ceph" in xencenter 8.0.0 I still get the error that SM has thrown a generic python exception.

          The SMlog error log indicates that creating a NFS repos is tried with the given parameters and not a CephFS one:

          ...
Sep 30 13:03:05 rzinstal4 SM: [975] sr_create {'sr_uuid': '79cc55db-ee9f-9cc0-8d94-8cdb2915363b', 'subtask_of': 'DummyRef:|6456510f-b2dd-4dcd-b6ab-eb5eb40ceb9c|SR.create', 'args': ['0'], 'host_ref': 'OpaqueRef:72898e54-20b2-4046-9825-94553457fa60', 'session_ref': 'OpaqueRef:8a0819af-8b91-4086-a9cf-04ae37dc8e79', 'device_config': {'server': '1.2.3.4', 'SRmaster': 'true', 'serverpath': '/base', 'options': 'name=admin,secretfile=/etc/ceph/admin.secret'}, 'command': 'sr_create', 'sr_ref': 'OpaqueRef:91c592f6-47a0-40d6-8a33-7fe01831145f'}
Sep 30 13:03:05 rzinstal4 SM: [975] ['/usr/sbin/rpcinfo', '-p', '1.2.3.4']
Sep 30 13:03:05 rzinstal4 SM: [975] FAILED in util.pread: (rc 1) stdout: '', stderr: 'rpcinfo: can't contact portmapper: RPC: Remote system error - Connection refused
Sep 30 13:03:05 rzinstal4 SM: [975] '
Sep 30 13:03:05 rzinstal4 SM: [975] Unable to obtain list of valid nfs versions
...

          I attached my /opt/xensource/sm/nfs.py file as well.

          Thanks a lot

          Rainer
          nfs.py.txt

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          • R Offline
            r1 XCP-ng Team
            last edited by

            r1 said in CEPH FS Storage Driver:

            patch -d/ -p0 < cephfs-8.patch

            Please try # patch -d/ -p0 < cephfs-8.patch

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            • R Offline
              r1 XCP-ng Team
              last edited by r1

              I see that there is a call to check_server_tcp which is expected to return True but not doing so in my patch. I'll modify it.

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              • R Offline
                r1 XCP-ng Team
                last edited by

                The same patch is updated. Kindly download again and try with # patch -d/ -p1 < cephfs-8.patch.

                R 1 Reply Last reply Reply Quote 0
                • R Offline
                  Rainer @r1
                  last edited by

                  Thanks for the new patch. Applying the patch does not report any errors or warnings. When I try to create a "NFS" SR I still get the generic python error message from xencenter however the error message in /var/log/SMlog has changed:

                  Oct  1 10:17:52 xenserver8 SM: [4975] lock: opening lock file /var/lock/sm/76ad6fee-a7a8-34e6-bcce-a53f69a677a9/sr
Oct  1 10:17:52 xenserver8 SM: [4975] lock: acquired /var/lock/sm/76ad6fee-a7a8-34e6-bcce-a53f69a677a9/sr
Oct  1 10:17:52 xenserver8 SM: [4975] sr_create {'sr_uuid': '76ad6fee-a7a8-34e6-bcce-a53f69a677a9', 'subtask_of': 'DummyRef:|c98cee36-24ff-4575-b7
43-3a84cd93ed17|SR.create', 'args': ['0'], 'host_ref': 'OpaqueRef:72898e54-20b2-4046-9825-94553457fa60', 'session_ref': 'OpaqueRef:175293cb-a791-
44be-bd5f-a4cb911adddb', 'device_config': {'server': '1.2.3.4', 'SRmaster': 'true', 'serverpath': '/base', 'options': 'name=admin,secretfil
e=/etc/ceph/admin.secret'}, 'command': 'sr_create', 'sr_ref': 'OpaqueRef:a36f0371-1dc7-4685-a208-24e04a1c1e08'}
Oct  1 10:17:52 xenserver8 SM: [4975] lock: released /var/lock/sm/76ad6fee-a7a8-34e6-bcce-a53f69a677a9/sr
Oct  1 10:17:52 xenserver8 SM: [4975] ***** generic exception: sr_create: EXCEPTION <type 'exceptions.NameError'>, global name 'useroptions' is no
t defined
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Oct  1 10:17:52 xenserver8 SM: [4975]     return self._run_locked(sr)
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Oct  1 10:17:52 xenserver8 SM: [4975]     rv = self._run(sr, target)
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Oct  1 10:17:52 xenserver8 SM: [4975]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/NFSSR", line 216, in create
Oct  1 10:17:52 xenserver8 SM: [4975]     raise exn
Oct  1 10:17:52 xenserver8 SM: [4975]
Oct  1 10:17:52 xenserver8 SM: [4975] ***** NFS VHD: EXCEPTION <type 'exceptions.NameError'>, global name 'useroptions' is not defined
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/SRCommand.py", line 372, in run
Oct  1 10:17:52 xenserver8 SM: [4975]     return self._run_locked(sr)
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Oct  1 10:17:52 xenserver8 SM: [4975]     rv = self._run(sr, target)
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Oct  1 10:17:52 xenserver8 SM: [4975]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Oct  1 10:17:52 xenserver8 SM: [4975]   File "/opt/xensource/sm/NFSSR", line 216, in create
Oct  1 10:17:52 xenserver8 SM: [4975]     raise exn
Oct  1 10:17:52 xenserver8 SM: [4975]
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                  • R Offline
                    r1 XCP-ng Team
                    last edited by

                    Looks like variable declaration issue. I had it working for XCP-NG 7.6... Give me some time to fix this and make it working for 8.0

                    J 1 Reply Last reply Reply Quote 0
                    • J Offline
                      jmccoy555 @r1
                      last edited by jmccoy555

                      r1 Is this still in development; would like to get it working with 8.1?

                      Manually mounting the CephFS works, but the patch fails, probably not surprisingly; or is a GlusterFS approach a better option?

                      With Ceph Octopus and the cephadm approach setting Ceph up is really easy, so maybe this will become a more popular feature....?

                      1 Reply Last reply Reply Quote 1
                      • R Offline
                        r1 XCP-ng Team
                        last edited by

                        jmccoy555 I did not continue this. Will definitely rejuvenate it once 8.1 is released. Hopefully next week.

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                        • R Offline
                          r1 XCP-ng Team
                          last edited by r1

                          jmccoy555

                          Notice: This is experimental and will be replaced by any updates to sm package

                          Ok, so here is updated patch for XCP-NG 8.1

                          # cd /
# wget "https://gist.githubusercontent.com/rushikeshjadhav/ea8a6e15c3b5e7f6e61fe0cb873173d2/raw/85acc83ec95cba5db7674572b79c403106b48a48/ceph-8.1.patch"
# patch -p0 < ceph-8.1.patch

                          Apart from patch you would need to install ceph-common to obtain mount.ceph

                          # yum install centos-release-ceph-nautilus --enablerepo=extras
# yum install ceph-common

                          There is no need of ceph.ko as now CephFS is part of kernel in 8.1.

                          You can refer NFS SR (Ceph) creation screenshot in earlier post or use following
                          # xe sr-create type=nfs device-config:server=10.10.10.10 device-config:serverpath=/ device-config:options=name=admin,secretfile=/etc/ceph/admin.secret name-label=CephFS

                          To remove this and restore to normal state
                          # yum reinstall sm

                          Note: Keep secret in /etc/ceph/admin.secret with permission 600

                          Edit: Hope to get this into a proper CephSR someday. Until then it must be considered for Proof of Concept only.
                          Changed ceph release repo to nautilus.

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                          • J Offline
                            jmccoy555
                            last edited by jmccoy555

                            r1 Hi, just given this a try, but with no luck....

                            Manual mount works and I can see files in /mnt/cephfs

                            mount -t ceph 10.10.1.141:/xcp /mnt/cephfs -o name=admin,secret=AQDZVn9eKD4hBBAAvf5GGWcRFQAZ1eqVPDynOQ==

                            Trying as per the instructions.....

                            xe sr-create type=nfs device-config:server=10.10.1.141 device-config:serverpath=/xcp device-config:options=name=admin,secretfile=/etc/ceph/admin.secret name-label=CephFS
Error code: SR_BACKEND_FAILURE_73
Error parameters: , NFS mount error [opterr=mount failed with return code 2],

                            7f82d50d-ac7e-42a1-80ff-9e728baa6dcf-image.png

                            And without the secret file just to check that wasn't the issue....

                            xe sr-create type=nfs device-config:server=10.10.1.141 device-config:serverpath=/xcp device-config:options=name=admin,secret=AQDZVn9eKD4hBBAAvf5GGWcRFQAZ1eqVPDynOQ== name-label=CephFS
Error code: SR_BACKEND_FAILURE_108
Error parameters: , Unable to detect an NFS service on this target.,

                            Last round in the log file

                            Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] lock: opening lock file /var/lock/sm/94fa22bb-e9a9-45b2-864a-392117b17891/sr
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] lock: acquired /var/lock/sm/94fa22bb-e9a9-45b2-864a-392117b17891/sr
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] sr_create {'sr_uuid': '94fa22bb-e9a9-45b2-864a-392117b17891', 'subtask_of': 'DummyRe f:|b72aac42-1790-40da-ba29-ed43a6554094|SR.create', 'args': ['0'], 'host_ref': 'OpaqueRef:c0ae3b47-b170-4d48-9397-3c973872a8b 2', 'session_ref': 'OpaqueRef:85070c69-888a-4827-8d19-ffd53944aa16', 'device_config': {'server': '10.10.1.141', 'SRmaster': ' true', 'serverpath': '/xcp', 'options': 'name=admin,secretfile=/etc/ceph/admin.secret'}, 'command': 'sr_create', 'sr_ref': 'O paqueRef:f775fe87-0d82-4029-a268-dd2cdf4feb27'}
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] _testHost: Testing host/port: 10.10.1.141,2049
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] _testHost: Connect failed after 2 seconds (10.10.1.141) - [Errno 111] Connection ref used
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] Raising exception [108, Unable to detect an NFS service on this target.]
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] lock: released /var/lock/sm/94fa22bb-e9a9-45b2-864a-392117b17891/sr
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] ***** generic exception: sr_create: EXCEPTION <class 'SR.SROSError'>, Unable to dete ct an NFS service on this target.
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     return self._run_locked(sr)
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     rv = self._run(sr, target)
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/NFSSR", line 198, in create
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     util._testHost(self.dconf['server'], NFSPORT, 'NFSTarget')
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/util.py", line 915, in _testHost
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     raise xs_errors.XenError(errstring)
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476] ***** NFS VHD: EXCEPTION <class 'SR.SROSError'>, Unable to detect an NFS service on  this target.
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/SRCommand.py", line 372, in run
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     ret = cmd.run(sr)
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     return self._run_locked(sr)
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     rv = self._run(sr, target)
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/NFSSR", line 198, in create
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     util._testHost(self.dconf['server'], NFSPORT, 'NFSTarget')
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]   File "/opt/xensource/sm/util.py", line 915, in _testHost
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]     raise xs_errors.XenError(errstring)
Apr  1 15:05:11 xcp-ng-bad-3 SM: [25476]

                            Is it still looking for a real NFS server?

                            edit: its logging port 2049 not 6789?

                            R 1 Reply Last reply Reply Quote 0
                            • R Offline
                              r1 XCP-ng Team @jmccoy555
                              last edited by

                              jmccoy555 please refer the note about the secret to be put in a file.

                              J 1 Reply Last reply Reply Quote 0
                              • J Offline
                                jmccoy555 @r1
                                last edited by jmccoy555

                                r1 tired that first, second code box and in XCP-ng center (I've moved the error box this time)

                                c895519b-9137-48f7-ac03-32936f39662b-image.png

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                                • R Offline
                                  r1 XCP-ng Team
                                  last edited by r1

                                  Do you have mount.ceph command?

                                  Can you share md5sum of NFSSR.py and nfs.py? They are in /opt/xensource/sm

                                  Also SMlog error stack.

                                  Edit: don't press Scan button as it's not implemented. Use CLI or "Finish" button.

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                                  • J Offline
                                    jmccoy555
                                    last edited by jmccoy555

                                    odd, no mount.cepth and I've just rerun yum install ceph-common and it's got dependency issues this time, so I guess that's not a great start!

                                    [16:50 xcp-ng-bad-3 /]# yum install centos-release-ceph-luminous --enablerepo=extras
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * extras: mirror.mhd.uk.as44574.net
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-base: mirrors.xcp-ng.org
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-updates: mirrors.xcp-ng.org
Package centos-release-ceph-luminous-1.1-2.el7.centos.noarch already installed and latest version
Nothing to do
[16:50 xcp-ng-bad-3 /]# yum install ceph-common
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-base: mirrors.xcp-ng.org
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-updates: mirrors.xcp-ng.org
Resolving Dependencies
--> Running transaction check
---> Package ceph-common.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: python-rgw = 2:12.2.11-0.el7 for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: python-rbd = 2:12.2.11-0.el7 for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: python-rados = 2:12.2.11-0.el7 for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: python-cephfs = 2:12.2.11-0.el7 for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: librbd1 = 2:12.2.11-0.el7 for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: librados2 = 2:12.2.11-0.el7 for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libcephfs2 = 2:12.2.11-0.el7 for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: python-requests for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: python-prettytable for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.1)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.0)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libtcmalloc.so.4()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: librbd.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libradosstriper.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libleveldb.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libfuse.so.2()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libcephfs.so.2()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libceph-common.so.0()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libbabeltrace.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libbabeltrace-ctf.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Running transaction check
---> Package ceph-common.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: python-requests for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.1)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.0)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libtcmalloc.so.4()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
---> Package fuse-libs.x86_64 0:2.9.2-10.el7 will be installed
---> Package leveldb.x86_64 0:1.12.0-5.el7.1 will be installed
---> Package libbabeltrace.x86_64 0:1.2.4-3.1.el7 will be installed
---> Package libcephfs2.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:libcephfs2-12.2.11-0.el7.x86_64
---> Package librados2.x86_64 1:0.94.5-2.el7 will be updated
---> Package librados2.x86_64 2:12.2.11-0.el7 will be an update
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.1)(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.0)(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
--> Processing Dependency: liblttng-ust.so.0()(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
---> Package libradosstriper1.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:libradosstriper1-12.2.11-0.el7.x86_64
---> Package librbd1.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librbd1-12.2.11-0.el7.x86_64
---> Package python-cephfs.x86_64 2:12.2.11-0.el7 will be installed
---> Package python-prettytable.noarch 0:0.7.2-1.el7 will be installed
---> Package python-rados.x86_64 2:12.2.11-0.el7 will be installed
---> Package python-rbd.x86_64 2:12.2.11-0.el7 will be installed
---> Package python-rgw.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: librgw2 = 2:12.2.11-0.el7 for package: 2:python-rgw-12.2.11-0.el7.x86_64
--> Processing Dependency: librgw.so.2()(64bit) for package: 2:python-rgw-12.2.11-0.el7.x86_64
--> Running transaction check
---> Package ceph-common.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: python-requests for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.1)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.0)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libtcmalloc.so.4()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
---> Package libcephfs2.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:libcephfs2-12.2.11-0.el7.x86_64
---> Package librados2.x86_64 2:12.2.11-0.el7 will be an update
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.1)(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.0)(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
---> Package libradosstriper1.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:libradosstriper1-12.2.11-0.el7.x86_64
---> Package librbd1.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librbd1-12.2.11-0.el7.x86_64
---> Package librgw2.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librgw2-12.2.11-0.el7.x86_64
---> Package lttng-ust.x86_64 0:2.10.0-1.el7 will be installed
--> Processing Dependency: liburcu-cds.so.6()(64bit) for package: lttng-ust-2.10.0-1.el7.x86_64
--> Processing Dependency: liburcu-bp.so.6()(64bit) for package: lttng-ust-2.10.0-1.el7.x86_64
--> Running transaction check
---> Package ceph-common.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: python-requests for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.1)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.0)(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libtcmalloc.so.4()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:ceph-common-12.2.11-0.el7.x86_64
---> Package libcephfs2.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:libcephfs2-12.2.11-0.el7.x86_64
---> Package librados2.x86_64 2:12.2.11-0.el7 will be an update
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.1)(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1(IBVERBS_1.0)(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librados2-12.2.11-0.el7.x86_64
---> Package libradosstriper1.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:libradosstriper1-12.2.11-0.el7.x86_64
---> Package librbd1.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librbd1-12.2.11-0.el7.x86_64
---> Package librgw2.x86_64 2:12.2.11-0.el7 will be installed
--> Processing Dependency: libibverbs.so.1()(64bit) for package: 2:librgw2-12.2.11-0.el7.x86_64
---> Package userspace-rcu.x86_64 0:0.10.0-3.el7 will be installed
--> Finished Dependency Resolution
Error: Package: 2:ceph-common-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: python-requests
Error: Package: 2:ceph-common-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1(IBVERBS_1.0)(64bit)
Error: Package: 2:libcephfs2-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1()(64bit)
Error: Package: 2:librbd1-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1()(64bit)
Error: Package: 2:ceph-common-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1()(64bit)
Error: Package: 2:ceph-common-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1(IBVERBS_1.1)(64bit)
Error: Package: 2:librados2-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1(IBVERBS_1.0)(64bit)
Error: Package: 2:librados2-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1()(64bit)
Error: Package: 2:librados2-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1(IBVERBS_1.1)(64bit)
Error: Package: 2:libradosstriper1-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1()(64bit)
Error: Package: 2:librgw2-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libibverbs.so.1()(64bit)
Error: Package: 2:ceph-common-12.2.11-0.el7.x86_64 (centos-ceph-luminous)
           Requires: libtcmalloc.so.4()(64bit)
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest
[16:51 xcp-ng-bad-3 /]#
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                                    • J Offline
                                      jmccoy555
                                      last edited by

                                      Not sure if its the best idea, but this did the trick

                                      yum install ceph-common  --enablerepo=base
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                                      • R Offline
                                        r1 XCP-ng Team
                                        last edited by

                                        Oh ok.. I know why... mount.ceph came in nautilus release. I have edited the post to install nautilus.

                                        Unlike RBD, CephFS gives browsable datastore + thin disks and is super easy to scale up/down in capacity with immediate reflection. I'd spend some time later to implement "Scan" and have a proper SR driver.

                                        Thanks for testing and feel free to raise if you come across further issues.

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                                        • J Offline
                                          jmccoy555
                                          last edited by

                                          Hi r1 I've only had a quick play so far but it appears to work quite well.

                                          I've shutdown a Ceph MDS node and it fails over to one of the other nodes and keeps working away.

                                          I am running my Ceph cluster in VMs (at the moment one per host with the second SATA controller on the motherboard passed-through) so have shut down all nodes, rebooted my XCP-ng server, booted up the Ceph cluster and was able to reconnect the Ceph SR, so that's all good.

                                          Unfortunately at the moment the patch breaks reconnecting the NFS SR, I think because the scan function is broken??, but reverting with yum reinstall sm fixes that, so not a big issue but is going to make things a bit more difficult until that is sorted after a host reboot.

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                                          • R Offline
                                            r1 XCP-ng Team
                                            last edited by

                                            jmccoy555 said in CEPH FS Storage Driver:

                                            Unfortunately at the moment the patch breaks reconnecting the NFS SR,

                                            It did not intend to.. I'll recheck on this.

                                            J 1 Reply Last reply Reply Quote 1
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