Sorry, I have totally forgot this. as far I remember, it was improving performance for some workload.
I'll try to do more test again this week. ----- Mail original ----- De: "Jorge Boncompte" <jbo...@gmail.com> À: "pve-devel" <pve-devel@pve.proxmox.com> Envoyé: Lundi 4 Novembre 2019 10:44:44 Objet: Re: [pve-devel] qemu : add disk option for physical/logical block (could improve windows guest performance wit ceph) El 16/5/19 a las 8:57, Alexandre DERUMIER escribió: >>> but all Windows >= 8 or >= 2012 support it for sure, so we could enable it >>> for >>> those. > yes indeed. > >>> If I read the table correctly then 512e is even "more" supported (older >>> ones with service pack or KB) as 4K native. > > I don't known if we can switch an existing disk without need to reformat ? > maybe 512e will work (logical 512, same than 512n)? > > >>> Some benchmarks would be great/interesting, and naturally a patch too :-) > I have some heavy mssql databases on my ceph nvme cluster,I'll try to bench > them. > I'll send a patch today or tomorrow. Hi Alexander, did you do benchmarks? Any conclusions you can share? Best regards. > > > > > ----- Mail original ----- > De: "Thomas Lamprecht" <t.lampre...@proxmox.com> > À: "pve-devel" <pve-devel@pve.proxmox.com>, "aderumier" > <aderum...@odiso.com>, "dietmar" <diet...@proxmox.com> > Envoyé: Jeudi 16 Mai 2019 08:47:22 > Objet: Re: [pve-devel] qemu : add disk option for physical/logical block > (could improve windows guest performance wit ceph) > > On 5/16/19 8:40 AM, Alexandre DERUMIER wrote: >>>> Sounds like a good idea. Maybe we can even set a better default (512e)? >> >> don't seem to works with all windows version (including KB on some versions) >> https://support.microsoft.com/en-us/help/2510009/microsoft-support-policy-for-4k-sector-hard-drives-in-windows >> > > but all Windows >= 8 or >= 2012 support it for sure, so we could enable it > for > those. If I read the table correctly then 512e is even "more" supported > (older > ones with service pack or KB) as 4K native. > > Some benchmarks would be great/interesting, and naturally a patch too :-) > > _______________________________________________ > pve-devel mailing list > pve-devel@pve.proxmox.com > https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel > _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
