Le mercredi 02 juin 2021 à 08:58 +0200, Thomas Lamprecht a écrit : > Hi, > > On 02.06.21 08:39, aderum...@odiso.com wrote: > > I was looking for qemu 6.0 new features, > > and it seem that they have implement parallel async chunks backup > > (and > > I think for other block operations, through a new block-copy > > feature) > > > > https://github.com/qemu/qemu/commit/71eed4cebed487a4f3c9f97aba83c611bbe22f8d > > > > https://github.com/qemu/qemu/commit/de4641b46b020c5b332175f80e8bfe3d352888e8#diff-b33323044f2699244c126c6eae6c4083c3c99a16f4840030ac13238b1f569dc0 > > > > https://github.com/qemu/qemu/commit/26be9d62dd5f5268b814da24fd8e8b5c5b999ebe > > > > Is it alrealy implemented or on the roadmap for the proxmox backup > > code > > ? > > (To be honest, I didn't follow proxmox backup patches since a long > > time, so I really don't known how much they are sharing with qemu > > backup code) > > the parallel stuff works with our implementation, Stefan tried it and > with their > default the backup is much faster, so fast that the guest cannot do > anything during > that anymore :D So, IIRC, Stefan turned the default number of > parallel operations down > for a better balance of backup speed and guest impact. > ok thanks ! (I'll still don't use pbs, I'll try to test with my rbd cluster soon to compare speed vs rbd export/import)
> FYI, we have basic packages for bullseye as base ready here, and > possible sync to > pvetest in the next days/weeks - in those repos there's already QEMU > 6.0. > yes, I see that.I'll try to do test soon > Something else we can use with Bullseye/PVE 7 is io_uring instead of > AIO, looks like > a much saner (and actually useful) design and there should be some, > at least slight, > improvements due to that too. > > https://kernel.dk/io_uring.pdf > yes, If I remember Wolfgang had seen some bug with kernel 5.4, but I think it's should works fine with 5.11. I'll try it too soon :) > cheers, > Thomas > _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
