Continuous vm replication or VM copy through XOA fails on WAN
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We have two environment of XCP-ng, lets say DC and DR connected over WAN.
DC and DR have multiple 3-4 XCP-ng hosts(XCP-ng 8.0) each.
We are using XO built from source. (5.42 build, xo-server 5.55.0, xo-web 5.55.0)
We are using XO for following:- Continuous VM replication of VM from DC to DR XCP-ng host.
This failed with the error: Error: VDI_IO_ERROR(Device I/O errors)
As per readings and recommendations from various threads(GH and forum) related specifically to this VDI_IO_ERROR, I have added following line in config.toml on xoa machine.
guessVhdsize = true
But this have not helped to resolve the issue.
Copying/continuous replication of VM within(intra) XCP-ng hosts of DC or DR environment works fine.
But the same operations fails when we perform them between DC and DR XCP-ng hosts.
Following errors are found in xensource.log of destination xcp-ng host:
Importing raw VDI R:<id>|vhd_tool_wrapper] vhd-tool failed, returning VDI_IO_ERROR
Importing raw VDI R:<id>|vhd_tool_wrapper] vhd-tool output: vhd-tool: Non-zero size required (either a pre-existing destination file or#012 specified via --destination-size on the command line)Importing raw VDI R:<id>|import] Caught exception: VDI_IO_ERROR: [ Device I/O errors ]
Importing raw VDI R:<id>|taskhelper] the status of R:<id> is failure; cannot set it to `failure
VDI.import D****|backtrace] Importing raw VDI R:<id> failed with exception Server_error(VDI_IO_ERROR, [ Device I/O errors ])
VDI.import D****|backtrace] Raised Server_error(VDI_IO_ERROR, [ Device I/O errors ])
VDI.import D****|backtrace] 1/12 xapi @ xcp-10 Raised at file ocaml/xapi/vhd_tool_wrapper.ml, line 59
VDI.import D****|backtrace] 2/12 xapi @ xcp-10 Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 24
VDI.import D****|backtrace] 3/12 xapi @ xcp-10 Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 35
VDI.import D****|backtrace] 4/12 xapi @ xcp-10 Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 24
VDI.import D****|backtrace] 5/12 xapi @ xcp-10 Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 35
VDI.import D****|backtrace] 6/12 xapi @ xcp-10 Called from file ocaml/xapi/import_raw_vdi.ml, line 81
VDI.import D****|backtrace] 7/12 xapi @ xcp-10 Called from file ocaml/xapi/import_raw_vdi.ml, line 105
VDI.import D****|backtrace] 8/12 xapi @ xcp-10 Called from file ocaml/xapi/server_helpers.ml, line 80
VDI.import D****|backtrace] 9/12 xapi @ xcp-10 Called from file ocaml/xapi/server_helpers.ml, line 99
VDI.import D****|backtrace] 10/12 xapi @ xcp-10 Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 24
VDI.import D****|backtrace] 11/12 xapi @ xcp-10 Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 35
VDI.import D****|backtrace] 12/12 xapi @ xcp-10 Called from file lib/backtrace.ml, line 177
VDI.import D:****|backtrace]If anybody faced similar issue and found any solution for it kindly reply to this.
- Continuous VM replication of VM from DC to DR XCP-ng host.