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    Create VM Error SR_BACKEND_FAILURE_1200, No such Tapdisk.

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    • G
      geoffbland @geoffbland
      last edited by

      I rebooted the server that those I/O errors were occurring on - and that seems to have stopped the I/O errors. Yet the problem with
      SR_BACKEND_FAILURE_1200, No such Tapdisk. is still occurring and I still cannot create new VMs.

      Any ideas anyone?

      1 Reply Last reply Reply Quote 0
      • DanpD
        Danp Vates 🪐 Pro Support Team
        last edited by

        Have you checked SMlog?

        G 1 Reply Last reply Reply Quote 0
        • G
          geoffbland @Danp
          last edited by

          @Danp said in Create VM Error SR_BACKEND_FAILURE_1200, No such Tapdisk.:

          Have you checked SMlog?

          Creating a new VM now and checking the SMLog I see the a similar error about the tapdisk (VM was created on the master host of the pool) ***** generic exception: vdi_attach: EXCEPTION <class 'blktap2.TapdiskNotRunning'>, No such Tapdisk(minor=5)

          Full log:

          Jun  8 22:39:00 XCPNG02 SM: [11278] lock: opening lock file /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11278] lock: acquired /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11278] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd']
Jun  8 22:39:00 XCPNG02 SM: [11278]   pread SUCCESS
Jun  8 22:39:00 XCPNG02 SM: [11278] lock: released /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11278] vdi_epoch_begin {'sr_uuid': 'bc2687ec-0cdf-03ed-7f90-e58edad07fed', 'subtask_of': 'DummyRef:|667b7d40-d2f2-46a6-aedd-b7faf50894f8|VDI.epoch_begin', 'vdi_ref': 'OpaqueRef:e7f286ca-bfe4-4cfe-8ae6-20a5c589ae2e', 'vdi_on_boot': 'persist', 'args': [], 'o_direct': False, 'vdi_location': '1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:4e700825-f840-4e11-9c8b-eb08ade578a5', 'device_config': {'SRmaster': 'true', 'serverpath': '/mnt/Pool01/Remote_VM_Images/xcpng_vm_images', 'server': 'TNC01.NEWT.newtcomputing.com'}, 'command': 'vdi_epoch_begin', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b1f916b2-51fb-4726-bcbf-49ab05b0cf50', 'vdi_uuid': '1d5654c5-0fe4-4a07-b5fb-29b58922870f'}
Jun  8 22:39:00 XCPNG02 SM: [11305] vdi_epoch_begin {'sr_uuid': 'ec87c10e-1499-c1c5-cf3f-c234062bb459', 'subtask_of': 'DummyRef:|362ae06a-b4bc-412a-babf-762ff2cda1f0|VDI.epoch_begin', 'vdi_ref': 'OpaqueRef:e2db345c-54ef-47c0-ad1f-6f9ea27f6e4a', 'vdi_on_boot': 'persist', 'args': [], 'vdi_location': 'ubuntu-22.04-live-server-amd64.iso', 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:f1407219-7293-44b2-9e3b-a1a03cf30416', 'device_config': {'SRmaster': 'true', 'location': 'UNRAID01.NEWT.newtcomputing.com:/mnt/user/isos'}, 'command': 'vdi_epoch_begin', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:9c3de093-8c48-4591-ac5d-dae913519937', 'vdi_uuid': '56e01d87-0eb5-4f03-b916-b74484360738'}
Jun  8 22:39:00 XCPNG02 SM: [11322] lock: opening lock file /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11322] lock: acquired /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11322] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd']
Jun  8 22:39:00 XCPNG02 SM: [11322]   pread SUCCESS
Jun  8 22:39:00 XCPNG02 SM: [11322] vdi_attach {'sr_uuid': 'bc2687ec-0cdf-03ed-7f90-e58edad07fed', 'subtask_of': 'DummyRef:|cc3f614f-68af-4c5b-a9fa-2dcc4ccdbab1|VDI.attach2', 'vdi_ref': 'OpaqueRef:e7f286ca-bfe4-4cfe-8ae6-20a5c589ae2e', 'vdi_on_boot': 'persist', 'args': ['true'], 'o_direct': False, 'vdi_location': '1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:cfd26e8a-b81b-4099-ab0e-a60dd825cc1c', 'device_config': {'SRmaster': 'true', 'serverpath': '/mnt/Pool01/Remote_VM_Images/xcpng_vm_images', 'server': 'TNC01.NEWT.newtcomputing.com'}, 'command': 'vdi_attach', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b1f916b2-51fb-4726-bcbf-49ab05b0cf50', 'vdi_uuid': '1d5654c5-0fe4-4a07-b5fb-29b58922870f'}
Jun  8 22:39:00 XCPNG02 SM: [11322] lock: opening lock file /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:00 XCPNG02 SM: [11322] <__main__.NFSFileVDI object at 0x7fea6672d150>
Jun  8 22:39:00 XCPNG02 SM: [11322] result: {'params_nbd': 'nbd:unix:/run/blktap-control/nbd/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'o_direct_reason': 'NO_RO_IMAGE', 'params': '/dev/sm/backend/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'o_direct': True, 'xenstore_data': {'scsi/0x12/0x80': 'AIAAEjFkNTY1NGM1LTBmZTQtNGEgIA==', 'scsi/0x12/0x83': 'AIMAMQIBAC1YRU5TUkMgIDFkNTY1NGM1LTBmZTQtNGEwNy1iNWZiLTI5YjU4OTIyODcwZiA=', 'vdi-uuid': '1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'mem-pool': 'bc2687ec-0cdf-03ed-7f90-e58edad07fed'}}
Jun  8 22:39:00 XCPNG02 SM: [11322] lock: released /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11353] lock: opening lock file /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11353] lock: acquired /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11353] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd']
Jun  8 22:39:00 XCPNG02 SM: [11353]   pread SUCCESS
Jun  8 22:39:00 XCPNG02 SM: [11353] lock: released /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:00 XCPNG02 SM: [11353] vdi_activate {'sr_uuid': 'bc2687ec-0cdf-03ed-7f90-e58edad07fed', 'subtask_of': 'DummyRef:|07b91a8d-5c31-4d6e-aca7-b8e3679dbc69|VDI.activate', 'vdi_ref': 'OpaqueRef:e7f286ca-bfe4-4cfe-8ae6-20a5c589ae2e', 'vdi_on_boot': 'persist', 'args': ['true'], 'o_direct': False, 'vdi_location': '1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:91fe63d1-9495-4ec6-bf3a-27a745a0561d', 'device_config': {'SRmaster': 'true', 'serverpath': '/mnt/Pool01/Remote_VM_Images/xcpng_vm_images', 'server': 'TNC01.NEWT.newtcomputing.com'}, 'command': 'vdi_activate', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b1f916b2-51fb-4726-bcbf-49ab05b0cf50', 'vdi_uuid': '1d5654c5-0fe4-4a07-b5fb-29b58922870f'}
Jun  8 22:39:00 XCPNG02 SM: [11353] lock: opening lock file /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:00 XCPNG02 SM: [11353] blktap2.activate
Jun  8 22:39:00 XCPNG02 SM: [11353] lock: acquired /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:00 XCPNG02 SM: [11353] Adding tag to: 1d5654c5-0fe4-4a07-b5fb-29b58922870f
Jun  8 22:39:00 XCPNG02 SM: [11353] Activate lock succeeded
Jun  8 22:39:00 XCPNG02 SM: [11353] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd']
Jun  8 22:39:00 XCPNG02 SM: [11353]   pread SUCCESS
Jun  8 22:39:00 XCPNG02 SM: [11353] PhyLink(/dev/sm/phy/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f) -> /var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd
Jun  8 22:39:00 XCPNG02 SM: [11353] <NFSSR.NFSFileVDI object at 0x7ff0bb6b9610>
Jun  8 22:39:00 XCPNG02 SM: [11353] ['/usr/sbin/tap-ctl', 'allocate']
Jun  8 22:39:00 XCPNG02 SM: [11353]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11353] ['/usr/sbin/tap-ctl', 'spawn']
Jun  8 22:39:00 XCPNG02 SM: [11353]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11353] ['/usr/sbin/tap-ctl', 'attach', '-p', '11418', '-m', '4']
Jun  8 22:39:00 XCPNG02 SM: [11353]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11353] ['/usr/sbin/tap-ctl', 'open', '-p', '11418', '-m', '4', '-a', 'vhd:/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd', '-t', '40']
Jun  8 22:39:00 XCPNG02 SM: [11353]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11353] ['/usr/sbin/tap-ctl', 'open', '-p', '11418', '-m', '4', '-a', 'vhd:/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd', '-t', '40']
Jun  8 22:39:00 XCPNG02 SM: [11353]  = 114
Jun  8 22:39:00 XCPNG02 SM: [11353] Set scheduler to [noop] on [/sys/dev/block/254:4]
Jun  8 22:39:00 XCPNG02 SM: [11353] tap.activate: Launched Tapdisk(vhd:/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd, pid=11418, minor=4, state=R)
Jun  8 22:39:00 XCPNG02 SM: [11353] DeviceNode(/dev/sm/backend/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f) -> /dev/xen/blktap-2/tapdev4
Jun  8 22:39:00 XCPNG02 SM: [11353] NBDLink(/run/blktap-control/nbd/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f) -> /run/blktap-control/nbd11418.4
Jun  8 22:39:00 XCPNG02 SM: [11353] lock: released /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:00 XCPNG02 SM: [11473] vdi_attach {'sr_uuid': 'ec87c10e-1499-c1c5-cf3f-c234062bb459', 'subtask_of': 'DummyRef:|f3f51060-a443-4a91-8eb9-e9b9e1b22a51|VDI.attach2', 'vdi_ref': 'OpaqueRef:e2db345c-54ef-47c0-ad1f-6f9ea27f6e4a', 'vdi_on_boot': 'persist', 'args': ['false'], 'vdi_location': 'ubuntu-22.04-live-server-amd64.iso', 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:987a7a78-b617-4d8a-8d3d-68e565aca8aa', 'device_config': {'SRmaster': 'true', 'location': 'UNRAID01.NEWT.newtcomputing.com:/mnt/user/isos'}, 'command': 'vdi_attach', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:9c3de093-8c48-4591-ac5d-dae913519937', 'vdi_uuid': '56e01d87-0eb5-4f03-b916-b74484360738'}
Jun  8 22:39:00 XCPNG02 SM: [11473] lock: opening lock file /var/lock/sm/56e01d87-0eb5-4f03-b916-b74484360738/vdi
Jun  8 22:39:00 XCPNG02 SM: [11473] Attach & activate
Jun  8 22:39:00 XCPNG02 SM: [11473] PhyLink(/dev/sm/phy/ec87c10e-1499-c1c5-cf3f-c234062bb459/56e01d87-0eb5-4f03-b916-b74484360738) -> /var/run/sr-mount/ec87c10e-1499-c1c5-cf3f-c234062bb459/ubuntu-22.04-live-server-amd64.iso
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'allocate']
Jun  8 22:39:00 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'spawn']
Jun  8 22:39:00 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'attach', '-p', '11505', '-m', '5']
Jun  8 22:39:00 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'open', '-p', '11505', '-m', '5', '-a', 'aio:/var/run/sr-mount/ec87c10e-1499-c1c5-cf3f-c234062bb459/ubuntu-22.04-live-server-amd64.iso', '-R']
Jun  8 22:39:00 XCPNG02 SM: [11473]  = 13
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'close', '-p', '11505', '-m', '5', '-t', '30']
Jun  8 22:39:00 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'detach', '-p', '11505', '-m', '5']
Jun  8 22:39:01 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:01 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'free', '-m', '5']
Jun  8 22:39:01 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:01 XCPNG02 SM: [11473] ***** generic exception: vdi_attach: EXCEPTION <class 'blktap2.TapdiskNotRunning'>, No such Tapdisk(minor=5)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Jun  8 22:39:01 XCPNG02 SM: [11473]     return self._run_locked(sr)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Jun  8 22:39:01 XCPNG02 SM: [11473]     rv = self._run(sr, target)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/SRCommand.py", line 247, in _run
Jun  8 22:39:01 XCPNG02 SM: [11473]     return target.attach(self.params['sr_uuid'], self.vdi_uuid, writable, caching_params = caching_params)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 1557, in attach
Jun  8 22:39:01 XCPNG02 SM: [11473]     {"rdonly": not writable})
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 1710, in _activate
Jun  8 22:39:01 XCPNG02 SM: [11473]     self._get_pool_config(sr_uuid).get("mem-pool-size"))
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 1346, in _tap_activate
Jun  8 22:39:01 XCPNG02 SM: [11473]     options)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 838, in launch_on_tap
Jun  8 22:39:01 XCPNG02 SM: [11473]     tapdisk = cls.__from_blktap(blktap)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 749, in __from_blktap
Jun  8 22:39:01 XCPNG02 SM: [11473]     tapdisk = cls.from_minor(minor=blktap.minor)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 745, in from_minor
Jun  8 22:39:01 XCPNG02 SM: [11473]     return cls.get(minor=minor)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 735, in get
Jun  8 22:39:01 XCPNG02 SM: [11473]     raise TapdiskNotRunning(**attrs)
Jun  8 22:39:01 XCPNG02 SM: [11473]
Jun  8 22:39:01 XCPNG02 SM: [11473] ***** ISO: EXCEPTION <class 'blktap2.TapdiskNotRunning'>, No such Tapdisk(minor=5)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/SRCommand.py", line 378, in run
Jun  8 22:39:01 XCPNG02 SM: [11473]     ret = cmd.run(sr)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/SRCommand.py", line 110, in run
Jun  8 22:39:01 XCPNG02 SM: [11473]     return self._run_locked(sr)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/SRCommand.py", line 159, in _run_locked
Jun  8 22:39:01 XCPNG02 SM: [11473]     rv = self._run(sr, target)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/SRCommand.py", line 247, in _run
Jun  8 22:39:01 XCPNG02 SM: [11473]     return target.attach(self.params['sr_uuid'], self.vdi_uuid, writable, caching_params = caching_params)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 1557, in attach
Jun  8 22:39:01 XCPNG02 SM: [11473]     {"rdonly": not writable})
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 1710, in _activate
Jun  8 22:39:01 XCPNG02 SM: [11473]     self._get_pool_config(sr_uuid).get("mem-pool-size"))
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 1346, in _tap_activate
Jun  8 22:39:01 XCPNG02 SM: [11473]     options)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 838, in launch_on_tap
Jun  8 22:39:01 XCPNG02 SM: [11473]     tapdisk = cls.__from_blktap(blktap)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 749, in __from_blktap
Jun  8 22:39:01 XCPNG02 SM: [11473]     tapdisk = cls.from_minor(minor=blktap.minor)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 745, in from_minor
Jun  8 22:39:01 XCPNG02 SM: [11473]     return cls.get(minor=minor)
Jun  8 22:39:01 XCPNG02 SM: [11473]   File "/opt/xensource/sm/blktap2.py", line 735, in get
Jun  8 22:39:01 XCPNG02 SM: [11473]     raise TapdiskNotRunning(**attrs)
Jun  8 22:39:01 XCPNG02 SM: [11473]
Jun  8 22:39:01 XCPNG02 SM: [11551] lock: opening lock file /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:01 XCPNG02 SM: [11551] lock: acquired /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:01 XCPNG02 SM: [11551] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd']
Jun  8 22:39:01 XCPNG02 SM: [11551]   pread SUCCESS
Jun  8 22:39:01 XCPNG02 SM: [11551] lock: released /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:01 XCPNG02 SM: [11551] vdi_deactivate {'sr_uuid': 'bc2687ec-0cdf-03ed-7f90-e58edad07fed', 'subtask_of': 'DummyRef:|f500f41d-7c07-44fb-9845-732f9c3f0f6a|VDI.deactivate', 'vdi_ref': 'OpaqueRef:e7f286ca-bfe4-4cfe-8ae6-20a5c589ae2e', 'vdi_on_boot': 'persist', 'args': [], 'o_direct': False, 'vdi_location': '1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:7d3510c2-c1fc-415b-b154-64da3af76a16', 'device_config': {'SRmaster': 'true', 'serverpath': '/mnt/Pool01/Remote_VM_Images/xcpng_vm_images', 'server': 'TNC01.NEWT.newtcomputing.com'}, 'command': 'vdi_deactivate', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b1f916b2-51fb-4726-bcbf-49ab05b0cf50', 'vdi_uuid': '1d5654c5-0fe4-4a07-b5fb-29b58922870f'}
Jun  8 22:39:01 XCPNG02 SM: [11551] lock: opening lock file /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:01 XCPNG02 SM: [11551] blktap2.deactivate
Jun  8 22:39:01 XCPNG02 SM: [11551] lock: acquired /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:01 XCPNG02 SM: [11551] ['/usr/sbin/tap-ctl', 'close', '-p', '11418', '-m', '4', '-t', '30']
Jun  8 22:39:01 XCPNG02 SM: [11551]  = 0
Jun  8 22:39:01 XCPNG02 SM: [11551] ['/usr/sbin/tap-ctl', 'detach', '-p', '11418', '-m', '4']
Jun  8 22:39:01 XCPNG02 SM: [11551]  = 0
Jun  8 22:39:01 XCPNG02 SM: [11551] ['/usr/sbin/tap-ctl', 'free', '-m', '4']
Jun  8 22:39:01 XCPNG02 SM: [11551]  = 0
Jun  8 22:39:01 XCPNG02 SM: [11551] tap.deactivate: Shut down Tapdisk(vhd:/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd, pid=11418, minor=4, state=R)
Jun  8 22:39:01 XCPNG02 SM: [11551] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd']
Jun  8 22:39:01 XCPNG02 SM: [11551]   pread SUCCESS
Jun  8 22:39:01 XCPNG02 SM: [11551] Removed host key host_OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190 for 1d5654c5-0fe4-4a07-b5fb-29b58922870f
Jun  8 22:39:01 XCPNG02 SM: [11551] lock: released /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:01 XCPNG02 SM: [11615] lock: opening lock file /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:01 XCPNG02 SM: [11615] lock: acquired /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:39:01 XCPNG02 SM: [11615] ['/usr/sbin/td-util', 'query', 'vhd', '-vpfb', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/1d5654c5-0fe4-4a07-b5fb-29b58922870f.vhd']
Jun  8 22:39:01 XCPNG02 SM: [11615]   pread SUCCESS
Jun  8 22:39:01 XCPNG02 SM: [11615] vdi_detach {'sr_uuid': 'bc2687ec-0cdf-03ed-7f90-e58edad07fed', 'subtask_of': 'DummyRef:|430cf35c-c0d7-43e4-bc89-b014d3bf7754|VDI.detach', 'vdi_ref': 'OpaqueRef:e7f286ca-bfe4-4cfe-8ae6-20a5c589ae2e', 'vdi_on_boot': 'persist', 'args': [], 'o_direct': False, 'vdi_location': '1d5654c5-0fe4-4a07-b5fb-29b58922870f', 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:f17eba69-d8c9-4dcf-ab26-6c8c7dba380c', 'device_config': {'SRmaster': 'true', 'serverpath': '/mnt/Pool01/Remote_VM_Images/xcpng_vm_images', 'server': 'TNC01.NEWT.newtcomputing.com'}, 'command': 'vdi_detach', 'vdi_allow_caching': 'false', 'sr_ref': 'OpaqueRef:b1f916b2-51fb-4726-bcbf-49ab05b0cf50', 'vdi_uuid': '1d5654c5-0fe4-4a07-b5fb-29b58922870f'}
Jun  8 22:39:01 XCPNG02 SM: [11615] lock: opening lock file /var/lock/sm/1d5654c5-0fe4-4a07-b5fb-29b58922870f/vdi
Jun  8 22:39:01 XCPNG02 SM: [11615] lock: released /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:40:44 XCPNG02 SM: [12548] ['uuidgen', '-r']
Jun  8 22:40:44 XCPNG02 SM: [12548]   pread SUCCESS
Jun  8 22:40:44 XCPNG02 SM: [12548] lock: opening lock file /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:40:44 XCPNG02 SM: [12548] lock: acquired /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
Jun  8 22:40:44 XCPNG02 SM: [12548] vdi_create {'sr_uuid': 'bc2687ec-0cdf-03ed-7f90-e58edad07fed', 'subtask_of': 'DummyRef:|96f661f1-77c5-4d4d-ab2b-243d0de50732|VDI.create', 'vdi_type': 'user', 'args': ['30064771072', 'test08jun_vdi', 'test08jun', '', 'false', '19700101T00:00:00Z', '', 'false'], 'o_direct': False, 'host_ref': 'OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190', 'session_ref': 'OpaqueRef:7b64b6b4-4d66-4746-b75e-f13c086da122', 'device_config': {'SRmaster': 'true', 'serverpath': '/mnt/Pool01/Remote_VM_Images/xcpng_vm_images', 'server': 'TNC01.NEWT.newtcomputing.com'}, 'command': 'vdi_create', 'sr_ref': 'OpaqueRef:b1f916b2-51fb-4726-bcbf-49ab05b0cf50', 'vdi_sm_config': {}}
Jun  8 22:40:44 XCPNG02 SM: [12548] ['/usr/sbin/td-util', 'create', 'vhd', '28672', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/604b51ed-53ea-45cf-a110-f4a51ec6101a.vhd']
Jun  8 22:40:44 XCPNG02 SM: [12548]   pread SUCCESS
Jun  8 22:40:44 XCPNG02 SM: [12548] ['/usr/sbin/td-util', 'query', 'vhd', '-v', '/var/run/sr-mount/bc2687ec-0cdf-03ed-7f90-e58edad07fed/604b51ed-53ea-45cf-a110-f4a51ec6101a.vhd']
Jun  8 22:40:44 XCPNG02 SM: [12548]   pread SUCCESS
Jun  8 22:40:44 XCPNG02 SM: [12548] lock: released /var/lock/sm/bc2687ec-0cdf-03ed-7f90-e58edad07fed/sr
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          • G
            geoffbland @geoffbland
            last edited by

            Checking the code of blktap2.py on github and what I have on my system and I can see that they are subtly different.

            I note last change to blktap2.py on github was 6th April 2020, I installed XCPNG November last year but I had recently been testing with the new XOSTOR. Checking the date of blktap2.py I find that it is 24th May 2022 so possibly this is a bug with the latest XOSTOR release?

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            • G geoffbland referenced this topic on
            • olivierlambertO
              olivierlambert Vates 🪐 Co-Founder CEO
              last edited by

              Pinging @ronan-a

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                geoffbland @olivierlambert
                last edited by

                @olivierlambert Is it possible to rollback to a "standard" version of XCP-NG on these servers? I did a quick search to see if there was a way to rollback to a given XCP-NG version but did not find anything specific.

                ronan-aR 1 Reply Last reply Reply Quote 0
                • olivierlambertO
                  olivierlambert Vates 🪐 Co-Founder CEO
                  last edited by

                  I think it is, but @ronan-a should help you with this.

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                  • ronan-aR
                    ronan-a Vates 🪐 XCP-ng Team @geoffbland
                    last edited by

                    @geoffbland You can downgrade your sm version on each host using:

                    yum downgrade sm-2.30.6-1.1.xcpng8.2.x86_64

                    But I'm not sure if your problem is related to the sm linstor version.

                    ronan-aR 1 Reply Last reply Reply Quote 0
                    • ronan-aR
                      ronan-a Vates 🪐 XCP-ng Team @ronan-a
                      last edited by ronan-a

                      Also:

                      Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'open', '-p', '11505', '-m', '5', '-a', 'aio:/var/run/sr-mount/ec87c10e-1499-c1c5-cf3f-c234062bb459/ubuntu-22.04-live-server-amd64.iso', '-R']
Jun  8 22:39:00 XCPNG02 SM: [11473]  = 13
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'close', '-p', '11505', '-m', '5', '-t', '30']
Jun  8 22:39:00 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:00 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'detach', '-p', '11505', '-m', '5']
Jun  8 22:39:01 XCPNG02 SM: [11473]  = 0
Jun  8 22:39:01 XCPNG02 SM: [11473] ['/usr/sbin/tap-ctl', 'free', '-m', '5']
Jun  8 22:39:01 XCPNG02 SM: [11473]  = 0

                      There is this error during the tapdisk open call: Permission denied (errno 13).
                      Are you sure you can access correctly to the data of your SR?

                      The last exception is caused in blktap2.py:

                                          try:
                        tapdisk = cls.__from_blktap(blktap)
                        node = '/sys/dev/block/%d:%d' % (tapdisk.major(), tapdisk.minor)
                        util.set_scheduler_sysfs_node(node, 'noop')
                        return tapdisk
                    except:
                        TapCtl.close(pid, minor)
                        raise
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                      • G
                        geoffbland @ronan-a
                        last edited by

                        @ronan-a said in Create VM Error SR_BACKEND_FAILURE_1200, No such Tapdisk.:

                        There is this error during the tapdisk open call: Permission denied (errno 13).
                        Are you sure you can access correctly to the data of your SR?

                        I'm pretty sure I can...

                        [11:42 XCPNG01 ~]# whoami
root
[11:42 XCPNG01 ~]# ll /var/run/sr-mount/ec87c10e-1499-c1c5-cf3f-c234062bb459/ubuntu-22.04-live-server-amd64.iso
-rwxrwx--- 1 root users 1466714112 Apr 21 19:20 /var/run/sr-mount/ec87c10e-1499-c1c5-cf3f-c234062bb459/ubuntu-22.04-live-server-amd64.iso
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                        • olivierlambertO
                          olivierlambert Vates 🪐 Co-Founder CEO
                          last edited by

                          Try to create a file in there instead of just listing 😉

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                          • G
                            geoffbland @olivierlambert
                            last edited by

                            @olivierlambert said in Create VM Error SR_BACKEND_FAILURE_1200, No such Tapdisk.:

                            Try to create a file in there instead of just listing 😉

                            I have access....

                            [18:13 XCPNG01 ec87c10e-1499-c1c5-cf3f-c234062bb459]# pwd
/var/run/sr-mount/ec87c10e-1499-c1c5-cf3f-c234062bb459
[18:13 XCPNG01 ec87c10e-1499-c1c5-cf3f-c234062bb459]# touch new_file
[18:14 XCPNG01 ec87c10e-1499-c1c5-cf3f-c234062bb459]# ll new_file
-rw-r----- 1 nfsnobody nfsnobody 0 Jun 13 18:14 new_file

                            Why is R/W access needed on the ISO SR?

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                            • G
                              geoffbland @geoffbland
                              last edited by

                              All the access rights to the isos looked OK on the remote server but just to check I wiped the share. Recreated it and copied back the isos. In then recreated the SR in XCP-ng and now it works. It had all been working fine and I had not changed anything on the share - it just stopped working. So please consider this fixed now - looks like some weird issue with the mount and not a problem with XCP-ng - sorry for wasting your time looking at this.

                              ronan-aR 1 Reply Last reply Reply Quote 0
                              • ronan-aR
                                ronan-a Vates 🪐 XCP-ng Team @geoffbland
                                last edited by

                                @geoffbland No problem. 🙂 It's the first time I see this error with tapdisk (and it's it's even more surprising to have it on this type of SR...).

                                It had all been working fine and I had not changed anything on the share - it just stopped working

                                In this case, maybe there was a problem with the XAPI, a lock on the device or something else. Not easy to find the cause without remote access. Don't hesitate to ping us if this problem comes back. 😉

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