ZFS in a VM?

krad kraduk at gmail.com
Mon Jun 15 11:37:46 UTC 2015

>From what i have read, and seen in the wild there is not many times you do
need to tune zfs, and when you do the main one is limiting arc size, as its
better to say let the DB do the caching internally rather than having the
fs layer guess what to cache. In fact start tweaking bits here and there
without good understanding of the internals is more likely to lead to an
unstable solution. I am talking about sysctl values obviously not dataset

On 15 June 2015 at 10:38, Raimund Sacherer <rs at logitravel.com> wrote:

> > I do. I do it not so much for any performance benefits, if any, ZFS
> offers,
> > but more for data integrity. You need to tune it since the VM based disks
> > are not the same as physical disks. I run into performance issues when
> the
> > “disk” gets to a certain usage level (in terms of used capacity).
> Hi,
> would you mind sharing what you tune because I am in the process of using
> more and more FreeBSD in our company and we have a couple of VMWare
> virtualizations.
> I would love to use ZFS with beadm to be able to make working snapshots
> before modifying the system and use snapshots in general.
> It would be great to be able to learn from someone who really use it and
> has experience
> Thanks
> Best
> Ray
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