Can anyone explain what gluster 4k support is?

I noticed Gluster 4k support mentioned in recent oVirt release notes. Can anyone explain what this is about?

On středa 11. března 2020 21:13:13 CET Jayme wrote:
I noticed Gluster 4k support mentioned in recent oVirt release notes. Can anyone explain what this is about?
before we supported only disks with block size 512 B. Now, we support also disks with 4 kB (aka 4k), for now only on Gluster SD. If you want to learn more about this feature, you can check slides [1] and I noticed that videos recording of Nir's talk he had on Fosdem is already available, so you can watch whole talk [2]. Vojta [1] https://docs.google.com/presentation/d/1ClLMZ4XAb8CPhYOw6mNpv0va5JWcAgpyFbJn... [2] https://video.fosdem.org/2020/H.1309/vai_ovirt_4k.webm

On March 16, 2020 11:08:16 PM GMT+02:00, Vojtech Juranek <vjuranek@redhat.com> wrote:
On středa 11. března 2020 21:13:13 CET Jayme wrote:
I noticed Gluster 4k support mentioned in recent oVirt release notes. Can anyone explain what this is about?
before we supported only disks with block size 512 B. Now, we support also disks with 4 kB (aka 4k), for now only on Gluster SD. If you want to learn more about this feature, you can check slides [1] and I noticed that videos recording of Nir's talk he had on Fosdem is already available, so you can watch whole talk [2].
Vojta
[1] https://docs.google.com/presentation/d/1ClLMZ4XAb8CPhYOw6mNpv0va5JWcAgpyFbJn... [2] https://video.fosdem.org/2020/H.1309/vai_ovirt_4k.webm
Can I switch off VDO's 512byte emulation ? Best Regards, Strahil Nikolov

On pondělí 16. března 2020 22:53:32 CET Strahil Nikolov wrote:
On March 16, 2020 11:08:16 PM GMT+02:00, Vojtech Juranek <vjuranek@redhat.com> wrote:
On středa 11. března 2020 21:13:13 CET Jayme wrote:
I noticed Gluster 4k support mentioned in recent oVirt release notes.
Can
anyone explain what this is about?
before we supported only disks with block size 512 B. Now, we support also disks with 4 kB (aka 4k), for now only on Gluster SD. If you want to learn more about this feature, you can check slides [1] and I noticed that videos recording of Nir's talk he had on Fosdem is already available, so you can watch whole talk [2].
Vojta
[1] https://docs.google.com/presentation/d/1ClLMZ4XAb8CPhYOw6mNpv0va5JWcAgpyFbJ n-Bml_aY/ [2] https://video.fosdem.org/2020/H.1309/vai_ovirt_4k.webm
Can I switch off VDO's 512byte emulation ?
yes, now Gluster SD should work without 512 block size emulation

Is there performance improvements using larger block size? On Tue, Mar 17, 2020 at 5:29 AM Vojtech Juranek <vjuranek@redhat.com> wrote:
On pondělí 16. března 2020 22:53:32 CET Strahil Nikolov wrote:
On March 16, 2020 11:08:16 PM GMT+02:00, Vojtech Juranek <vjuranek@redhat.com> wrote:
On středa 11. března 2020 21:13:13 CET Jayme wrote:
I noticed Gluster 4k support mentioned in recent oVirt release notes.
Can
anyone explain what this is about?
before we supported only disks with block size 512 B. Now, we support also disks with 4 kB (aka 4k), for now only on Gluster SD. If you want to learn more about this feature, you can check slides [1] and I noticed that videos recording of Nir's talk he had on Fosdem is already available, so you can watch whole talk [2].
Vojta
[1]
https://docs.google.com/presentation/d/1ClLMZ4XAb8CPhYOw6mNpv0va5JWcAgpyFbJ
n-Bml_aY/ [2] https://video.fosdem.org/2020/H.1309/vai_ovirt_4k.webm
Can I switch off VDO's 512byte emulation ?
yes, now Gluster SD should work without 512 block size emulation_______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/LEG5DXY3A5HSAB...

Is there performance improvements using larger block size?
yes, it *should* give you better performance
On Tue, Mar 17, 2020 at 5:29 AM Vojtech Juranek <vjuranek@redhat.com> wrote:
On pondělí 16. března 2020 22:53:32 CET Strahil Nikolov wrote:
On March 16, 2020 11:08:16 PM GMT+02:00, Vojtech Juranek
<vjuranek@redhat.com> wrote:
On středa 11. března 2020 21:13:13 CET Jayme wrote:
I noticed Gluster 4k support mentioned in recent oVirt release notes.
Can
anyone explain what this is about?
before we supported only disks with block size 512 B. Now, we support also disks with 4 kB (aka 4k), for now only on Gluster SD. If you want to learn more about this feature, you can check slides [1] and I noticed that videos recording of Nir's talk he had on Fosdem is already available, so you can watch whole talk [2].
Vojta
[1]
https://docs.google.com/presentation/d/1ClLMZ4XAb8CPhYOw6mNpv0va5JWcAgpyFb J
n-Bml_aY/ [2] https://video.fosdem.org/2020/H.1309/vai_ovirt_4k.webm
Can I switch off VDO's 512byte emulation ?
yes, now Gluster SD should work without 512 block size emulation_______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/LEG5DXY3A5HS ABLDHQAO2M53G3SC4E2U/
participants (3)
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Jayme
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Strahil Nikolov
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Vojtech Juranek