Re: WAFL error on a flexgroup?

Thank you.

I'm not finding any mention of turning this feature on or off, is the 
default? If so, we're at 9.8P1 and should be running it.


On 5/26/2021 11:44 AM, Parisi, Justin wrote:
>
> TR-4571
>
> https://www.netapp.com/us/media/tr-4571.pdf 
> <https://www.netapp.com/us/media/tr-4571.pdf>
>
> *From:* Rue, Randy <[email protected]>
> *Sent:* Wednesday, May 26, 2021 2:43 PM
> *To:* Parisi, Justin <[email protected]>; Douglas Siggins 
> <[email protected]>
> *Cc:* Toasters <[email protected]>
> *Subject:* Re: WAFL error on a flexgroup?
>
> *NetApp Security WARNING*: This is an external email. Do not click 
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>
>
>
> OK, after reading the below it sounds like elastic sizing should 
> already be on and should have prevented my full constituent volume. 
> Why didn't it?
>
> What's proactive resizing? Where can I find out more about it?
>
> On 5/26/2021 9:23 AM, Parisi, Justin wrote:
>
>     I’d actually recommend 9.8 and proactive resizing instead.
>
>     Elastic sizing is reactive and incurs a latency penalty when used.
>     And it can’t be used with vol autosize.
>
>     Proactive resizing starts resizing when we get to 60% used and
>     maintains a relatively even free space buffer and can be used with
>     autosize.
>
>     *From:* Toasters <[email protected]>
>     <mailto:[email protected]> *On Behalf Of *Douglas Siggins
>     *Sent:* Wednesday, May 26, 2021 12:15 PM
>     *To:* Rue, Randy <[email protected]> <mailto:[email protected]>
>     *Cc:* Toasters <[email protected]> <mailto:[email protected]>
>     *Subject:* Re: WAFL error on a flexgroup?
>
>     *NetApp Security WARNING*: This is an external email. Do not click
>     links or open attachments unless you recognize the sender and know
>     the content is safe.
>
>
>
>
>     I believe this might help:
>
>     Elastic sizing was introduced in Ontap 9.6. This article details
>     the issue:
>
>     https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Elastic_Sizing_with_FlexGroup_Volumes
>     <https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Elastic_Sizing_with_FlexGroup_Volumes>
>
>     This should be turned on by default but can be turned off via:
>
>     node run nodename flexgroup set elastic-sizing=false
>
>     On Wed, May 26, 2021 at 12:01 PM Rue, Randy <[email protected]
>     <mailto:[email protected]>> wrote:
>
>         OK, resizing the flexgroup added some space to the constituent
>         volume
>         (to all of them, actually) and now it has free space. But a
>         look at the
>         eight CVs in the FG shows they range from 22% to 68% full. Is
>         something
>         keeping them more or less balanced? If so, how did it fail?
>         And if not,
>         what the hell?
>
>         On 5/26/2021 8:47 AM, Rue, Randy wrote:
>         > sure enough, that constituent volume is completely full:
>         >
>         > scarab::> vol show -vserver scharpdata -is-constituent true
>         > Vserver   Volume       Aggregate State      Type       Size
>         > Available Used%
>         > --------- ------------ ------------ ---------- ---- ----------
>         > ---------- -----
>         > scharpdata scharp_systems__0002 scarab_b_SSD_1 online RW 448GB
>         > 0B  100%
>         >
>         >
>         > now what?
>         >
>         >
>         > On 5/26/2021 8:38 AM, Vanderyt, Jeff wrote:
>         >> vol show -vserver vserver_name -is-constituent true
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