[OmniOS-discuss] ZFS pool allocation remains after removing all files

[Richard Elling]

DanMcD will know for sure, but vols do support SCSI UNMAP over comstar.
The "missing" support is for ZFS to issue SCSI UNMAP commands to the disks.
 -- richard

On Oct 9, 2014, at 3:39 AM, Rune Tipsmark <rt at steait.net> wrote:

> Yeah, I searched and found a few threads about it, seems like it won't happen anytime soon.
> 
> I would actually pay for that feature in OmniOS.
> 
> Rune
> 
> -----Original Message-----
> From: Filip Marvan [mailto:filip.marvan at aira.cz] 
> Sent: Thursday, October 09, 2014 3:21 AM
> To: omnios-discuss at lists.omniti.com
> Cc: Rune Tipsmark
> Subject: Re: [OmniOS-discuss] ZFS pool allocation remains after removing all files
> 
> Hello,
> 
> yes, VAAI could be probably the answer for vmware, and for example NexentaStor have some VAAI support as I know, but there were many problems with that (based on posts from users on Nexenta's forum) like freezing under heavy load and so on.
> 
> I gues, it will be very complicated to bring VAAI support to OmniOS.
> 
> Filip
> 
>> -------------------------------------
>> Date: Thu, 9 Oct 2014 10:02:51 +0000
>> From: Rune Tipsmark <rt at steait.net>
>> To: Filip Marvan <filip.marvan at aira.cz>,
>> 	"omnios-discuss at lists.omniti.com"	<omnios-discuss at lists.omniti.com>
>> Subject: Re: [OmniOS-discuss] ZFS pool allocation remains after
>> 	removing all files
>> Message-ID: <84b71eba9b5f43828f944cddb42f0160 at EX1301.steait.net>
>> Content-Type: text/plain; charset="us-ascii"
>> 
>> Thanks for the input Filip,
>> 
>> I think I found the answer though... no VAAI in OmniOS/ZFS
>> 
>> VAAI provides amongst other features:
>> 
>> Thin Provisioning in ESXi 5.x and later hosts, which allows the ESXi host to tell the array when the >space previously occupied by a virtual machine (whether it is deleted or migrated to another >datastore) can be reclaimed on thin provisioned LUNs.
>> 
>> Next questions is, will VAAI be supported in OmniOS/ZFS
>> 
>> Br,
>> Rune
> 
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