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    XOSTOR hyperconvergence preview

    Scheduled Pinned Locked Moved XOSTOR
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    • G Offline
      geoffbland @ronan-a
      last edited by

      @ronan-a you can only have one running controller in your pool

      OK, got it, that makes sense. I think it is time I started reading up on Linstor rather than bugging you with what are probably easy questions to answer if I just read up a bit more. Thanks.

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      • G Offline
        geoffbland @ronan-a
        last edited by

        This post is deleted!
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        • G Offline
          geoffbland
          last edited by

          What is the URL for the GitHub repo for XOSTOR in case I find some issues and need to report them? I looked under the xcpng project - only sm (Stroage Manager) seemed relevant.

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

            @geoffbland Yes, https://github.com/xcp-ng/sm is the right repository. 😉

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            • G Offline
              geoffbland @ronan-a
              last edited by

              @ronan-a Thanks.
              There's no Issues tab on this repo so no way to open issues on this repo. Are Issues turned on for this?

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

                @geoffbland The entry for issues is this repo: https://github.com/xcp-ng/xcp
                The sm repo is used for the pull requests.

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                • G Offline
                  geoffbland
                  last edited by geoffbland

                  First tests with XOSAN with newly created VMs have been good.

                  I'm now trying to migrate some existing VMs from NFS (TrueNAS) to XOSAN to test "active" VMs.

                  With the VM running - pressing the Migrate VDI button on the Disks tab, pauses the VM as expected but when the VM restarts the VDI is still on the original disk. The VDI has not been migrated to XOSAN.

                  If I first stop the VM and then press the Migrate VDI button on the Disks tab, I then do get an error.

                  vdi.migrate
                  {
                    "id": "8a3520ad-328f-4515-b547-2fb283edbd91",
                    "sr_id": "cf896912-cd71-d2b2-488a-5792b7147c87"
                  }
                  {
                    "code": "SR_BACKEND_FAILURE_46",
                    "params": [
                      "",
                      "The VDI is not available [opterr=Could not load f1ca0b16-ce23-408a-b80e-xxxxxxxxxxxx because: No such file or directory]",
                      ""
                    ],
                    "task": {
                      "uuid": "8b3b47ee-4135-fea7-5f30-xxxxxxxxxxxx",
                      "name_label": "Async.VDI.pool_migrate",
                      "name_description": "",
                      "allowed_operations": [],
                      "current_operations": {},
                      "created": "20220522T12:20:12Z",
                      "finished": "20220522T12:20:54Z",
                      "status": "failure",
                      "resident_on": "OpaqueRef:a1e9a8f3-0a79-4824-b29f-d81b3246d190",
                      "progress": 1,
                      "type": "<none/>",
                      "result": "",
                      "error_info": [
                        "SR_BACKEND_FAILURE_46",
                        "",
                        "The VDI is not available [opterr=Could not load f1ca0b16-ce23-408a-b80e-xxxxxxxxxxxx because: No such file or directory]",
                        ""
                      ],
                      "other_config": {},
                      "subtask_of": "OpaqueRef:NULL",
                      "subtasks": [],
                      "backtrace": "(((process xapi)(filename ocaml/xapi-client/client.ml)(line 7))((process xapi)(filename ocaml/xapi-client/client.ml)(line 19))((process xapi)(filename ocaml/xapi-client/client.ml)(line 12325))((process xapi)(filename lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename lib/xapi-stdext-pervasives/pervasiveext.ml)(line 35))((process xapi)(filename ocaml/xapi/message_forwarding.ml)(line 131))((process xapi)(filename lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename lib/xapi-stdext-pervasives/pervasiveext.ml)(line 35))((process xapi)(filename lib/xapi-stdext-pervasives/pervasiveext.ml)(line 24))((process xapi)(filename ocaml/xapi/rbac.ml)(line 231))((process xapi)(filename ocaml/xapi/server_helpers.ml)(line 103)))"
                    },
                    "message": "SR_BACKEND_FAILURE_46(, The VDI is not available [opterr=Could not load f1ca0b16-ce23-408a-b80e-xxxxxxxxxxxx because: No such file or directory], )",
                    "name": "XapiError",
                    "stack": "XapiError: SR_BACKEND_FAILURE_46(, The VDI is not available [opterr=Could not load f1ca0b16-ce23-408a-b80e-xxxxxxxxxxxx because: No such file or directory], )
                      at Function.wrap (/opt/xo/xo-builds/xen-orchestra-202204291839/packages/xen-api/src/_XapiError.js:16:12)
                      at _default (/opt/xo/xo-builds/xen-orchestra-202204291839/packages/xen-api/src/_getTaskResult.js:11:29)
                      at Xapi._addRecordToCache (/opt/xo/xo-builds/xen-orchestra-202204291839/packages/xen-api/src/index.js:949:24)
                      at forEach (/opt/xo/xo-builds/xen-orchestra-202204291839/packages/xen-api/src/index.js:983:14)
                      at Array.forEach (<anonymous>)
                      at Xapi._processEvents (/opt/xo/xo-builds/xen-orchestra-202204291839/packages/xen-api/src/index.js:973:12)
                      at Xapi._watchEvents (/opt/xo/xo-builds/xen-orchestra-202204291839/packages/xen-api/src/index.js:1139:14)"
                  }
                  

                  Exporting the VDI from NFS and (re)importing as a VM on XOSTOR does work.

                  I'm guessing this is not a problem with XOSTOR specifically but with XO or NFS, still I would like to work out what is causing migration and how to fix it?

                  Also I have noticed that the underlying volume on XOSTOR/linstor that was created and started to be populated does get cleaned up when the migrate fails.

                  This is using XO from the sources - updated fairly recently (commit 8ed84) and XO server 5.92.0.

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

                    It could be interesting to understand why the migration failed the first time. Is there absolutely no error during this first migration?

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                    • G Offline
                      geoffbland @olivierlambert
                      last edited by

                      @olivierlambert Thanks for the prompt response.

                      I am pretty sure there was no error reported but as I cleared down the logs when I retried from on export/import I can't be 100% sure.

                      So I tested migration on another VM to try and replicate this and this time migration worked OK.

                      The only difference I can think of is that the failure occurred on a VM created quite a time ago - whilst the working VM had been created recently.

                      I will do a few more tests and see if I can replicate this again.

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

                        Okay great 🙂 If you can reproduce, that would be even better to try to do the migration with xe CLI, this way we remove more moving pieces in the middle 🙂

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                        • G Offline
                          geoffbland @olivierlambert
                          last edited by

                          @olivierlambert Sorry, took some time to get around to this. But trying to migrate a VDI from an NFS store to XOSTOR is still failing most of the time. This is a VM that was created some time ago - it I do the same with the VDI of a a recently created VM the migration seems to work OK.

                          >xe vm-disk-list vm=lb01
                          Disk 0 VBD:
                          uuid ( RO)             : d9d06048-6f91-1913-714d-xxxxxxxxaece
                              vm-name-label ( RO): lb01
                                 userdevice ( RW): 0
                          
                          
                          Disk 0 VDI:
                          uuid ( RO)             : a38f27e8-c6a0-49d3-9fd3-xxxxxxxx10e3
                                 name-label ( RW): lb01_tnc01_hdd
                              sr-name-label ( RO): XCPNG_VMs_TrueNAS
                               virtual-size ( RO): 10737418240
                          
                          >xe sr-list name-label=XOSTOR01
                          uuid ( RO)                : cf896912-cd71-d2b2-488a-xxxxxxxx7c87
                                    name-label ( RW): XOSTOR01
                              name-description ( RW):
                                          host ( RO): <shared>
                                          type ( RO): linstor
                                  content-type ( RO):
                          
                          >xe vdi-pool-migrate uuid=a38f27e8-c6a0-49d3-9fd3-xxxxxxxx10e3 sr-uuid=cf896912-cd71-d2b2-488a-xxxxxxxx7c87
                          
                          Error code: SR_BACKEND_FAILURE_46
                          Error parameters: , The VDI is not available [opterr=Could not load 735fc2d7-f1f0-4cc6-9d35-xxxxxxxxec6c because: ['XENAPI_PLUGIN_FAILURE', 'getVHDInfo', 'CommandException', 'No such file or directory']],
                          

                          Running this I see the VM pause as expected for a few minutes and then it just starts up again. VM is still running with no issues - it just did not move the VDI.

                          What is the resource with UUID 735fc2d7-f1f0-4cc6-9d35-xxxxxxxxec6c that it is trying to find? That UUID does not match the VDI.

                          The VDI must be OK as the VM is still up and running with no errors.

                          As this is probably not an XOSTOR issue - should I raise a new topic for this?

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

                            It's hard to tell. If you can migrate between non-XOSTOR SRs and see if you reproduce, then it's another issue. If it's only happening when using XOSTOR in the loop, then it's relevant here 🙂

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

                              @geoffbland I can't reproduce your problem, can you send me the SMlog of your hosts please? 🙂

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                              • G Offline
                                geoffbland @ronan-a
                                last edited by

                                @ronan-a said in XOSTOR hyperconvergence preview:

                                @geoffbland I can't reproduce your problem, can you send me the SMlog of your hosts please? 🙂

                                As requested,

                                May 24 09:13:22 XCPNG01 SM: [18127] ['/usr/bin/vhd-util', 'query', '--debug', '-vsfp', '-n', '/dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-xxxxxxxx58c0/0']
                                May 24 09:13:23 XCPNG01 SM: [18127] FAILED in util.pread: (rc 2) stdout: '40960
                                May 24 09:13:23 XCPNG01 SM: [18127] 2048840192
                                May 24 09:13:23 XCPNG01 SM: [18127] query failed
                                May 24 09:13:23 XCPNG01 SM: [18127] hidden: 0
                                May 24 09:13:23 XCPNG01 SM: [18127] ', stderr: ''
                                May 24 09:13:23 XCPNG01 SM: [18127] linstor-manager:get_vhd_info error: No such file or directory
                                May 24 09:13:26 XCPNG01 SM: [18158] ['/usr/bin/vhd-util', 'query', '--debug', '-vsfp', '-n', '/dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-xxxxxxxx58c0/0']
                                May 24 09:13:26 XCPNG01 SM: [18158] FAILED in util.pread: (rc 2) stdout: '40960
                                May 24 09:13:26 XCPNG01 SM: [18158] 2048840192
                                May 24 09:13:26 XCPNG01 SM: [18158] query failed
                                May 24 09:13:26 XCPNG01 SM: [18158] hidden: 0
                                May 24 09:13:26 XCPNG01 SM: [18158] ', stderr: ''
                                May 24 09:13:26 XCPNG01 SM: [18158] linstor-manager:get_vhd_info error: No such file or directory
                                May 24 09:13:29 XCPNG01 SM: [18200] ['/usr/bin/vhd-util', 'query', '--debug', '-vsfp', '-n', '/dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-xxxxxxxx58c0/0']
                                May 24 09:13:29 XCPNG01 SM: [18200] FAILED in util.pread: (rc 2) stdout: '40960
                                May 24 09:13:29 XCPNG01 SM: [18200] 2048840192
                                May 24 09:13:29 XCPNG01 SM: [18200] query failed
                                May 24 09:13:29 XCPNG01 SM: [18200] hidden: 0
                                May 24 09:13:29 XCPNG01 SM: [18200] ', stderr: ''
                                May 24 09:13:29 XCPNG01 SM: [18200] linstor-manager:get_vhd_info error: No such file or directory
                                May 24 09:13:32 XCPNG01 SM: [18212] ['/usr/bin/vhd-util', 'query', '--debug', '-vsfp', '-n', '/dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-xxxxxxxx58c0/0']
                                May 24 09:13:32 XCPNG01 SM: [18212] FAILED in util.pread: (rc 2) stdout: '40960
                                May 24 09:13:32 XCPNG01 SM: [18212] 2048840192
                                May 24 09:13:32 XCPNG01 SM: [18212] query failed
                                May 24 09:13:32 XCPNG01 SM: [18212] hidden: 0
                                May 24 09:13:32 XCPNG01 SM: [18212] ', stderr: ''
                                May 24 09:13:32 XCPNG01 SM: [18212] linstor-manager:get_vhd_info error: No such file or directory
                                May 24 09:13:35 XCPNG01 SM: [18247] ['/usr/bin/vhd-util', 'query', '--debug', '-vsfp', '-n', '/dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-xxxxxxxx58c0/0']
                                May 24 09:13:35 XCPNG01 SM: [18247] FAILED in util.pread: (rc 2) stdout: '40960
                                May 24 09:13:35 XCPNG01 SM: [18247] 2048840192
                                May 24 09:13:35 XCPNG01 SM: [18247] query failed
                                May 24 09:13:35 XCPNG01 SM: [18247] hidden: 0
                                May 24 09:13:35 XCPNG01 SM: [18247] ', stderr: ''
                                May 24 09:13:35 XCPNG01 SM: [18247] linstor-manager:get_vhd_info error: No such file or directory
                                May 24 09:13:36 XCPNG01 SM: [18259] ['/usr/bin/vhd-util', 'query', '--debug', '-vsfp', '-n', '/dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-xxxxxxxx58c0/0']
                                May 24 09:13:36 XCPNG01 SM: [18259] FAILED in util.pread: (rc 2) stdout: '40960
                                May 24 09:13:36 XCPNG01 SM: [18259] 2048840192
                                May 24 09:13:36 XCPNG01 SM: [18259] query failed
                                May 24 09:13:36 XCPNG01 SM: [18259] hidden: 0
                                May 24 09:13:36 XCPNG01 SM: [18259] ', stderr: ''
                                May 24 09:13:36 XCPNG01 SM: [18259] linstor-manager:get_vhd_info error: No such file or directory
                                
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                                • G Offline
                                  geoffbland
                                  last edited by geoffbland

                                  I found one of the VMs I had been using to test XOSTOR was locked up this morning. I restarted it but it will not start up and gives an error about the VDI being missing.

                                  >xe vm-list name-label=test04
                                  uuid ( RO)           : 8ec952b4-7229-7a30-81b6-1564a58f6343
                                       name-label ( RW): test04
                                      power-state ( RO): halted
                                  
                                  >xe vm-disk-list vm=test04
                                  Disk 0 VBD:
                                  uuid ( RO)             : e3c465b8-17a4-d147-6383-527bd9341a16
                                      vm-name-label ( RO): test04
                                         userdevice ( RW): 0
                                  
                                  
                                  Disk 0 VDI:
                                  uuid ( RO)             : 735fc2d7-f1f0-4cc6-9d35-42a049d8ec6c
                                         name-label ( RW): test04_xostor01_vdi
                                      sr-name-label ( RO): XOSTOR01
                                       virtual-size ( RO): 42949672960
                                  
                                  >xe vm-start vm=test04
                                  Error code: SR_BACKEND_FAILURE_46
                                  Error parameters: , The VDI is not available [opterr=Could not load 735fc2d7-f1f0-4cc6-9d35-42a049d8ec6c because: ['XENAPI_PLUGIN_FAILURE', 'getVHDInfo', 'CommandException', 'No such file or directory']],
                                  

                                  The logs for this are attached as file xostor issue 1.txt

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

                                    @geoffbland Can you execute this command on the other hosts please?

                                    ls -l /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                    

                                    Also I don't have all the info in your previous log, can you send me the previous SMlog files? (Using private message if you want. 🙂 )

                                    G 1 Reply Last reply Reply Quote 0
                                    • G Offline
                                      geoffbland @ronan-a
                                      last edited by

                                      @ronan-a said in XOSTOR hyperconvergence preview:

                                      Can you execute this command on the other hosts please?

                                      As requested

                                      XCPNG01 - Current linstor master

                                      [10:59 XCPNG01 ~]# ls -l /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                      lrwxrwxrwx 1 root root 17 May 22 19:24 /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0 -> ../../../drbd1004
                                      

                                      XCPNG02

                                      [11:00 XCPNG02 ~]# ls -l /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                      lrwxrwxrwx 1 root root 17 May 22 19:25 /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0 -> ../../../drbd1004
                                      

                                      XCPNG03

                                      [07:31 XCPNG03 ~]# ls -l /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                      lrwxrwxrwx 1 root root 17 May 22 19:24 /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0 -> ../../../drbd1004
                                      

                                      XCPNG04

                                      [07:35 XCPNG04 ~]# ls -l /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                      lrwxrwxrwx 1 root root 17 May 22 19:24 /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0 -> ../../../drbd1004
                                      

                                      XCPNG05

                                      [10:49 XCPNG05 ~]# ls -l /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                      lrwxrwxrwx 1 root root 17 May 22 19:24 /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0 -> ../../../drbd1004
                                      
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                                      • G Offline
                                        geoffbland
                                        last edited by

                                        It seems like xe may be getting mixed up between where a host is running and where the XOSTOR storage is held.
                                        Apologies if I have misunderstood and done something wrong here - but I think this migration should have worked.
                                        I created a new VM on one of my hosts XCPNG05 using XOSTOR as the VDI RS. I can see that the linstore volumes are on hosts XCPNG01, XCPNG03 and XCPNG05.
                                        XCPNG05 is an Intel server, XCPNG01 and XCPNG03 are AMD. The VM is running on XCPNG05.
                                        Now when I try to migrate the VM's VDI from XOSTOR onto a local VDI on the same host the VM is currently running on I get a warning about incompatible CPUs.

                                        To replicate the issue:

                                        Create new VM test05 on XOSTOR.
                                        VM is created on host XCPNG05.

                                        >xe vm-list name-label=test05
                                        uuid ( RO)           : d3f8c52d-be3c-3712-0ccc-a526dcc241a5
                                             name-label ( RW): test05
                                            power-state ( RO): running
                                        
                                        >xe vm-disk-list vm=test05
                                        Disk 0 VBD:
                                        uuid ( RO)             : a337cd1f-04cc-ce46-fbfb-d5d8e290dc03
                                            vm-name-label ( RO): test05
                                               userdevice ( RW): 0
                                        
                                        Disk 0 VDI:
                                        uuid ( RO)             : f856680c-c00d-44af-ba3f-16d9952ccb2f
                                               name-label ( RW): test05_vdi
                                            sr-name-label ( RO): XOSTOR01
                                             virtual-size ( RO): 34359738368
                                        
                                        >xe sr-list name-label=XOSTOR01
                                        uuid ( RO)                : cf896912-cd71-d2b2-488a-xxxxxxxx7c87
                                                  name-label ( RW): XOSTOR01
                                            name-description ( RW):
                                                        host ( RO): <shared>
                                                        type ( RO): linstor
                                                content-type ( RO):
                                        

                                        Migrate to local disk (SSD1) on same host (XCPNG05) - this fails migrating to the same host the VM is currently running on due to incompatible CPU.

                                        >xe sr-list name-label=XCPNG05SSD1
                                        uuid ( RO)                : c0851501-3a1b-c661-70b9-54373e0d9847
                                                  name-label ( RW): XCPNG05SSD1
                                            name-description ( RW):
                                                        host ( RO): XCPNG05
                                                        type ( RO): lvm
                                                content-type ( RO): user
                                        
                                        >xe vdi-pool-migrate uuid=f856680c-c00d-44af-ba3f-16d9952ccb2f sr-uuid=c0851501-3a1b-c661-70b9-54373e0d9847
                                        The VM is incompatible with the CPU features of this host.
                                        vm: d3f8c52d-be3c-3712-0ccc-a526dcc241a5 (test05)
                                        host: 7bd62a77-71d6-4b51-9a86-850dd4ff4b60 (XCPNG05)
                                        reason: VM last booted on a host which had a CPU from a different vendor.
                                        
                                        
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                                        • ronan-aR Offline
                                          ronan-a Vates 🪐 XCP-ng Team @geoffbland
                                          last edited by

                                          @geoffbland Thank you, so ok the VDI is still here on all hosts.

                                          You can try to check the status of the VDH like the smapi using:

                                          /usr/bin/vhd-util query --debug -vsfp -n /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                          

                                          If you have this problem on many hosts, I suspect a problem with DRBD, so maybe there is a useful info in daemon.log and/or kern.log.

                                          G 1 Reply Last reply Reply Quote 0
                                          • G Offline
                                            geoffbland @ronan-a
                                            last edited by geoffbland

                                            @ronan-a said in XOSTOR hyperconvergence preview:

                                            You can try to check the status of the VDH like the smapi using:
                                            /usr/bin/vhd-util query --debug -vsfp -n /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                            useful info in daemon.log and/or kern.log.

                                            This gives the following:

                                            [10:59 XCPNG01 ~]# /usr/bin/vhd-util query --debug -vsfp -n /dev/drbd/by-res/xcp-volume-75c11231-0fb8-4b40-9e2e-a0665bb758c0/0
                                            40960
                                            2061447680
                                            query failed
                                            hidden: 0
                                            

                                            I will send logs by direct mail.

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