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    CEPH FS Storage Driver

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    • J
      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
        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
          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

          1 Reply Last reply Reply Quote 0
          • R
            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.

            1 Reply Last reply Reply Quote 0
            • J
              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 /]#
              1 Reply Last reply Reply Quote 0
              • J
                jmccoy555
                last edited by

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

                yum install ceph-common  --enablerepo=base
                1 Reply Last reply Reply Quote 0
                • R
                  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.

                  1 Reply Last reply Reply Quote 0
                  • J
                    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.

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

                        @r1 ok, I'm only saying this as it didn't reconnect (the NFS server was up prior to boot) and if you try to add a new one the Scan button returns an error.

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

                          Hi @r1 Just ttied this on my pool of two servers, but no luck. Should it work? I've verified the same command on a host not in a pool and it works fine.

                          [14:20 xcp-ng-bad-1 /]# xe sr-create type=nfs device-config:server=10.10.1.141,10.10.1.142,10.10.1.143 device-config:serverpath=/xcp device-config:options=name=xcp,secretfile=/etc/ceph/xcp.secret name-label=CephFS
Error: Required parameter not found: host-uuid
[14:20 xcp-ng-bad-1 /]# xe sr-create type=nfs device-config:server=10.10.1.141,10.10.1.142,10.10.1.143 device-config:serverpath=/xcp device-config:options=name=xcp,secretfile=/etc/ceph/xcp.secret name-label=CephFS host-uuid=c6977e4e-972f-4dcc-a71f-42120b51eacf
Error code: SR_BACKEND_FAILURE_140
Error parameters: , Incorrect DNS name, unable to resolve.,

                          I've verified ceph.mount works, and I can manually mount with the mount command.

                          /var/log/SMlog

                          Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] lock: opening lock file /var/lock/sm/fa472dc0-f80b-b667-99d8-0b36cb01c5d4/sr
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] lock: acquired /var/lock/sm/fa472dc0-f80b-b667-99d8-0b36cb01c5d4/sr
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] sr_create {'sr_uuid': 'fa472dc0-f80b-b667-99d8-0b36cb01c5d4', 'subtask_of': 'DummyRef:|cf1a6d4a-fca9-410e-8307-88e3421bff4e|SR.create', 'args': ['0'], 'host_ref': 'OpaqueRef:5527aabc-8bd0-416e-88bf-b6a0cb2b72b1', 'session_ref': 'OpaqueRef:49495fa6-ec85-4340-b59d-ee1f037c0bb7', 'device_config': {'server': '10.10.1.141', 'SRmaster': 'true', 'serverpath': '/xcp', 'options': 'name=xcp,secretfile=/etc/ceph/xcp.secret'}, 'command': 'sr_create', 'sr_ref': 'OpaqueRef:f57d72be-8465-4a79-87c4-84a34c93baac'}
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] _testHost: Testing host/port: 10.10.1.141,2049
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] _testHost: Connect failed after 2 seconds (10.10.1.141) - [Errno 111] Connection refused
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] Raising exception [108, Unable to detect an NFS service on this target.]
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] lock: released /var/lock/sm/fa472dc0-f80b-b667-99d8-0b36cb01c5d4/sr
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] ***** generic exception: sr_create: EXCEPTION <class 'SR.SROSError'>, Unable to detect an NFS service on this target.
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     return self._run_locked(sr)
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     rv = self._run(sr, target)
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/NFSSR", line 198, in create
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     util._testHost(self.dconf['server'], NFSPORT, 'NFSTarget')
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/util.py", line 915, in _testHost
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     raise xs_errors.XenError(errstring)
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369] ***** NFS VHD: EXCEPTION <class 'SR.SROSError'>, Unable to detect an NFS service on this target.
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/SRCommand.py", line 372, in run
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     ret = cmd.run(sr)
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     return self._run_locked(sr)
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     rv = self._run(sr, target)
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/NFSSR", line 198, in create
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     util._testHost(self.dconf['server'], NFSPORT, 'NFSTarget')
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]   File "/opt/xensource/sm/util.py", line 915, in _testHost
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]     raise xs_errors.XenError(errstring)
Apr  4 14:32:02 xcp-ng-bad-1 SM: [25369]
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                          • P
                            peder
                            last edited by

                            @jmccoy555 said in CEPH FS Storage Driver:

                            device-config:server=10.10.1.141,10.10.1.142,10.10.1.143

                            Are you sure that's supposed to work?
                            Try using only one IP-address and see if the command works as intended.

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                            • J
                              jmccoy555 @r1
                              last edited by

                              @r1 said in CEPH FS Storage Driver:

                              while for CEPHSR we can use #mount.ceph addr1,addr2,addr3,addr4:remotepath localpath

                              Yep, as far as I know that is how you configure the failover, and as I said it works (with one or more IPs) from a host not in a pool.

                              p.s. yes I also tried with one IP to just be sure.

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                              • R
                                r1 XCP-ng Team
                                last edited by

                                @jmccoy555 Can you try the latest patch?

                                Before applying it restore to normal state
                                # yum reinstall sm

                                # cd /
# wget "https://gist.githubusercontent.com/rushikeshjadhav/ea8a6e15c3b5e7f6e61fe0cb873173d2/raw/dabe5c915b30a0efc932cab169ebe94c17d8c1ca/ceph-8.1.patch"
# patch -p0 < ceph-8.1.patch

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

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

                                To handle the NFS port conflict, specifying port is mandatory e.g. device-config:serverport=6789

                                Ceph Example:
                                # xe sr-create type=nfs device-config:server=10.10.10.10,10.10.10.26 device-config:serverpath=/ device-config:serverport=6789 device-config:options=name=admin,secretfile=/etc/ceph/admin.secret name-label=Ceph

                                NFS Example:
                                # xe sr-create type=nfs device-config:server=10.10.10.5 device-config:serverpath=/root/nfs name-label=NFS

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                                • J
                                  jmccoy555
                                  last edited by

                                  @r1 Tried from my pool....

                                  [14:38 xcp-ng-bad-1 /]# xe sr-create type=nfs device-config:server=10.10.1.141,10.10.1.142,10.10.1.143 device-config:serverpath=/xcp device-config:serverport=6789 device-config:options=name=xcp,secretfile=/etc/ceph/xcp.secret name-label=CephFS host-uuid=c6977e4e-972f-4dcc-a71f-42120b51eacf
Error code: SR_BACKEND_FAILURE_1200
Error parameters: , not all arguments converted during string formatting,


                                  Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] lock: opening lock file /var/lock/sm/a6e19bdc-0831-4d87-087d-86fca8cfb6fd/sr
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] lock: acquired /var/lock/sm/a6e19bdc-0831-4d87-087d-86fca8cfb6fd/sr
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] sr_create {'sr_uuid': 'a6e19bdc-0831-4d87-087d-86fca8cfb6fd', 'subtask_of': 'DummyRef:|572cd61e-b30c-48cb-934f-d597218facc0|SR.create', 'args': ['0'], 'host_ref': 'OpaqueRef:5527aabc-8bd0-416e-88bf-b6a0cb2b72b1', 'session_ref': 'OpaqueRef:e83f61b2-b546-4f22-b14f-31b5d5e7ae4f', 'device_config': {'server': '10.10.1.141,10.10.1.142,10.10.1.143', 'serverpath': '/xcp', 'SRmaster': 'true', 'serverport': '6789', 'options': 'name=xcp,secretfile=/etc/ceph/xcp.secret'}, 'command': 'sr_create', 'sr_ref': 'OpaqueRef:f77a27d8-d427-4c68-ab26-059c1c576c30'}
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] _testHost: Testing host/port: 10.10.1.141,6789
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] ['/usr/sbin/rpcinfo', '-p', '10.10.1.141']
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] FAILED in util.pread: (rc 1) stdout: '', stderr: 'rpcinfo: can't contact portmapper: RPC: Remote system error - Connection refused
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] '
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] Unable to obtain list of valid nfs versions
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] lock: released /var/lock/sm/a6e19bdc-0831-4d87-087d-86fca8cfb6fd/sr
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] ***** generic exception: sr_create: EXCEPTION <type 'exceptions.TypeError'>, not all arguments converted during string formatting
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     return self._run_locked(sr)
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     rv = self._run(sr, target)
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/NFSSR", line 222, in create
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     raise exn
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906] ***** NFS VHD: EXCEPTION <type 'exceptions.TypeError'>, not all arguments converted during string formatting
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/SRCommand.py", line 372, in run
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     ret = cmd.run(sr)
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     return self._run_locked(sr)
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     rv = self._run(sr, target)
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/SRCommand.py", line 323, in _run
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     return sr.create(self.params['sr_uuid'], long(self.params['args'][0]))
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]   File "/opt/xensource/sm/NFSSR", line 222, in create
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]     raise exn
Apr  6 14:38:26 xcp-ng-bad-1 SM: [8906]

                                  Will try from my standalone host with a reboot later to see if the NFS reconnect issue has gone.

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                                  • R
                                    r1 XCP-ng Team
                                    last edited by

                                    @jmccoy555 I have rpcbind service running. Can you check on your ceph node?

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                                    • J
                                      jmccoy555
                                      last edited by

                                      @r1 yep, that's it, rpcbind is needed. I have a very minimal Debian 10 VM hosting my Ceph (dockers) as is now the way with Octopus.

                                      Also had to swap the host-uuid= with shared=true for it to connect to all hosts within the pool (might be useful for the notes).

                                      Will test and also check that everything is good after a reboot and report back.

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                                      • J
                                        jmccoy555
                                        last edited by jmccoy555

                                        Just to report back..... So far so good. I've moved over a few VDIs and not had any problems.

                                        I've rebooted hosts and Ceph nodes and all is good.

                                        NFS is also all good now.

                                        Hope this gets merges soon so I don't have to worry about updates 😄

                                        On a side note, I've also set up two pools, one of SSDs and one of HDDs using File Layouts to assign different directories (VM SRs) to different pools.

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                                        • R
                                          r1 XCP-ng Team
                                          last edited by

                                          @jmccoy555 glad to know. I don't have much knowledge on File Layouts but that looks good.

                                          NFS edits won't be merged as that was just for POC. Working on a dedicated CephFS SR driver which hopefully won't be impacted due to sm or other upgrades. Keep watching this space.

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                                          • olivierlambertO
                                            olivierlambert Vates 🪐 Co-Founder CEO
                                            last edited by

                                            We can write a simple "driver" like we did for Gluster 🙂

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