[pve-devel] pve-manager and disk IO monitoring

[Michael Rasmussen]

On Thu, 29 Sep 2016 09:41:35 +0300
Dmitry Petuhov <mityapetuhov at gmail.com> wrote:

> In QemuServer.pm (some code omitted):
> 
> if ($drive->{interface} eq 'scsi')
> my $devicetype = 'hd';
>      if($path =~ m/^iscsi\:\/\//){
>          $devicetype = 'generic';
>      }
> $device = "scsi-$devicetype ...
> 
> So usually if drive interface is scsi, PVE uses fully-emulated qemu device 'scsi-hd'. But for iscsi: volumes (iscsi direct and zfs over iscsi) it uses 'scsi-generic' device, which just proxies scsi commands between guest OS and your SAN's iscsi target.
> 
I see. So currently by using scsi-generic you sort off disable all
qemu block features like monitoring etc. ?

-- 
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Michael Rasmussen

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