[PVE-User] Slow speeds when KVM guest is on NFS

Brian :: bc at iptel.co
Tue Nov 15 22:43:42 CET 2016


What type of disk controller and what caching mode are you using?



On Tue, Nov 15, 2016 at 9:36 PM, Mikhail <m at plus-plus.su> wrote:
> On 11/16/2016 12:33 AM, Brian :: wrote:
>> 90.4 MB/s isn't that far off.
>
> Hello,
>
> Yes, but I'm only able to get these results when doing simple "dd" test
> directly on Proxmox host machine inside NFS-mounted directory. KVM
> guest's filesystem is not getting even 1/4 of that speed when it's disk
> resides on the very same NFS (Debian installation from stock ISO takes
> ~hour to copy first halt of it's files..)
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