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  • All news regarding Xen and XCP-ng ecosystem

    143 Topics
    4k Posts
    P
    @marcoi perhaps a restart toolstack would correct the phantom task ? but at the end of patching of the master a restart toolstack should have happened already, automatically...
  • Everything related to the virtualization platform

    1k Topics
    15k Posts
    dthenotD
    @bvitnik Hello, sm-config:vdi_type is the pre-existing one so we are still writing it for compatibility reasons. But you might notice that vdi_type is only written for LVM-based SRs. While image-format is always written in XCP-ng with the QCOW2 feature. So it might be safe to just look at image-format if it exist and if it's not, it's likely a VHD. On LVMSR, you can fallback on vdi_type (and it should work for XS too). Indeed, ISO SRs do not advertise a VDI format. Technically, ISOs could be considered to be raw. It should also be noted that our implementation of QCOW2 is very different from GFS2 QCOW2 of XenServer. Our implementation uses the existing SR types to allow VHD and QCOW2 to co-exist.
  • 3k Topics
    28k Posts
    poddingueP
    Nice detective work with iperf. I think that single-stream-versus-parallel result points at the link rather than XOA, and it matches what @Pilow saw (same CR speed on a much fatter 10 Gb path). On your multi-stream question: as far as I understand it, the transfer is a single stream per disk, which is exactly why a per-stream cap on your circuit hurts so much, though I'm honestly not certain of the internals. The one lever I'd try is NBD with multiple connections per VDI, which you can switch on under Advanced settings (https://docs.xen-orchestra.com/xo5/incremental_backups#nbd-enabled-backups); in principle, that opens several connections for the same disk, so it might get you past a single-stream limit, though I can't promise it beats your ISP's per-stream shaping. For a definitive answer on whether the data mover can parallelise per disk, it's probably one for @Team-XO-Backend. Either way, glad it's narrowed down to the link.
  • Our hyperconverged storage solution

    47 Topics
    750 Posts
    olivierlambertO
    Please disable HA and report if you still have the issue.
  • 35 Topics
    113 Posts
    olivierlambertO
    Ah excellente nouvelle Je passe le sujet en résolu !