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

[Michael Rasmussen]

On Thu, 29 Sep 2016 09:17:56 +0300
Dmitry Petuhov <mityapetuhov at gmail.com> wrote:

> It's side effect of scsi pass-through, which is being used by default for [libi]scsi volumes with scsi VM disk interface. QEMU is just not aware of VM block IO in that case. Also, cache settings for volumes are ineffective, because qemu is just proxying raw scsi commands to backing storage, so caching is impossible.
> 
> Do you use PVE backups (vzdump)? Is it works for machines without stats? I think it's also shall not work with pass-through.
> 
What do you mean by pass-through? (no pass-through is happening here
since the storage resides on a SAN)

And yes, vzdump works for these machines.

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