On Thu, Feb 2, 2017 at 4:23 PM, Краснобаев Михаил <milo1@ya.ru> wrote:

Hi,

upgraded my cluster (3 hosts, engine, nfs-share) to the latest 4.1 release and Centos 7.3 (from 4.06).

Did the following:

1. Upgraded engine machine to Centos 7.3
2. Upgraded engine packages and ran "engine-setup"
3. Upgraded one by one hosts to 7.3 + packages from the new 4.1. repo and refreshed hosts capabilities.
4. Raised cluster and datacenter compatibility level to 4.1.
5. Restarted virtual machines and tested migration.
6. Profit! Everything went really smoothly. No errors.

Now trying to figure out how the sparsify function works. I need to run trimming from inside the VM first?

If you've configured it to use virtio-SCSI, and DISCARD is enabled, you can. But I believe virt-sparsify does a bit.

BTW, depending on the OS, if DISCARD is enabled, I would not do anything - for example, in Fedora, there's a systemd timer that once a week runs fstrim for you.

If not, then it has to be turned off and then you can run virt-sparsify.

Best regards, Mikhail.

02.02.2017, 15:19, "Sandro Bonazzola" <sbonazzo@redhat.com>:
Hi,
did you install/update to 4.1.0? Let us know your experience!
We end up knowing only when things doesn't work well, let us know it works fine for you :-)

If you're not planning an update to 4.1.0 in the near future, let us know why.
Maybe we can help.

Thanks!
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Sandro Bonazzola
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С уважением, Краснобаев Михаил.

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