Re: [ovirt-users] iSCSI domain on 4kn drives

2017-11-13 Thread David Teigland
On Sat, Nov 11, 2017 at 12:24:25AM +, Nir Soffer wrote:
> David, do you know if 4k disks over NFS works for sanlock?

When using files, sanlock always does 512 byte i/o.  This can be a problem
when there are 4k disks used under NFS.  On disks, sanlock detects the
sector size (with libblkid) and uses 512/4k accordingly.

If vdsm knows when to use 4k i/o over files, I can add a sanlock flag that
vdsm can use to create 4k sanlock leases.

Dave

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Re: [ovirt-users] iSCSI domain on 4kn drives

2017-11-10 Thread Nir Soffer
On Mon, Sep 5, 2016 at 10:16 AM Martijn Grendelman <
martijn.grendel...@isaac.nl> wrote:

> Op 7-8-2016 om 8:19 schreef Yaniv Kaul:
>
>
> On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman <
> martijn.grendel...@isaac.nl> wrote:
>
> Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
>>
>> On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman <
>> martijn.grendel...@isaac.nl> wrote:
>>
>>> Hi,
>>>
>>> Does oVirt support iSCSI storage domains on target LUNs using a block
>>> size of 4k?
>>>
>>
>> No, we do not - not if it exposes 4K blocks.
>> Y.
>>
>>
>> Is this on the roadmap?
>>
>
> Not in the short term roadmap.
> Of course, patches are welcome. It's mainly in VDSM.
> I wonder if it'll work in NFS.
> Y.
>
>
> I don't think I ever replied to this, but I can confirm that in RHEV 3.6
> it works with NFS.
>

David, do you know if 4k disks over NFS works for sanlock?


>
> Best regards,
> Martijn.
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Re: [ovirt-users] iSCSI domain on 4kn drives

2017-11-10 Thread Nir Soffer
On Fri, Nov 10, 2017 at 8:43 PM Marcelo Leandro 
wrote:

> Good afternoon,
>
> Exist a plan for a implementation of vdsm works with blocks in 4k?
>

Not yet.

If this is important to you, I suggest to open an ovirt bug and explain
your use case.

You can also get someone to implement this. Note that this will not be easy
change, there
is lost of code assuming 512 bytes block size.

The change also require changes in sanlock. Vdsm and sanlock must agree on
the block
size used for a storage domain.

Nir


>
> Thanks.
>
> 2016-09-05 4:15 GMT-03:00 Martijn Grendelman 
> :
>
>> Op 7-8-2016 om 8:19 schreef Yaniv Kaul:
>>
>>
>> On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman <
>> martijn.grendel...@isaac.nl> wrote:
>>
>>> Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
>>>
>>> On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman <
>>> martijn.grendel...@isaac.nl> wrote:
>>>
 Hi,

 Does oVirt support iSCSI storage domains on target LUNs using a block
 size of 4k?

>>>
>>> No, we do not - not if it exposes 4K blocks.
>>> Y.
>>>
>>>
>>> Is this on the roadmap?
>>>
>>
>> Not in the short term roadmap.
>> Of course, patches are welcome. It's mainly in VDSM.
>> I wonder if it'll work in NFS.
>> Y.
>>
>>
>> I don't think I ever replied to this, but I can confirm that in RHEV 3.6
>> it works with NFS.
>>
>> Best regards,
>> Martijn.
>>
>> ___
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>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
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Re: [ovirt-users] iSCSI domain on 4kn drives

2016-09-05 Thread Martijn Grendelman
Op 7-8-2016 om 8:19 schreef Yaniv Kaul:
>
> On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman
> > wrote:
>
> Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
>> On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman
>> > > wrote:
>>
>> Hi,
>>
>> Does oVirt support iSCSI storage domains on target LUNs using
>> a block
>> size of 4k?
>>
>>
>> No, we do not - not if it exposes 4K blocks.
>> Y.
>
> Is this on the roadmap?
>
>
> Not in the short term roadmap.
> Of course, patches are welcome. It's mainly in VDSM.
> I wonder if it'll work in NFS.
> Y.

I don't think I ever replied to this, but I can confirm that in RHEV 3.6
it works with NFS.

Best regards,
Martijn.
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Re: [ovirt-users] iSCSI domain on 4kn drives

2016-08-07 Thread Yaniv Kaul
On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman <
martijn.grendel...@isaac.nl> wrote:

> Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
>
> On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman <
> martijn.grendel...@isaac.nl> wrote:
>
>> Hi,
>>
>> Does oVirt support iSCSI storage domains on target LUNs using a block
>> size of 4k?
>>
>
> No, we do not - not if it exposes 4K blocks.
> Y.
>
>
> Is this on the roadmap?
>

Not in the short term roadmap.
Of course, patches are welcome. It's mainly in VDSM.
I wonder if it'll work in NFS.
Y.


>
> I just bought a bunch of 4k native drives and spent a LOT of money. Now it
> seems they are useless in my oVirt/RHEV environment...
>
> Regards,
> Martijn.
>
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Re: [ovirt-users] iSCSI domain on 4kn drives

2016-08-05 Thread Martijn Grendelman
Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
> On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman
> > wrote:
>
> Hi,
>
> Does oVirt support iSCSI storage domains on target LUNs using a block
> size of 4k?
>
>
> No, we do not - not if it exposes 4K blocks.
> Y.

Is this on the roadmap?

I just bought a bunch of 4k native drives and spent a LOT of money. Now
it seems they are useless in my oVirt/RHEV environment...

Regards,
Martijn.
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Re: [ovirt-users] iSCSI domain on 4kn drives

2016-08-04 Thread Yaniv Kaul
On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman <
martijn.grendel...@isaac.nl> wrote:

> Hi,
>
> Does oVirt support iSCSI storage domains on target LUNs using a block
> size of 4k?
>

No, we do not - not if it exposes 4K blocks.
Y.


>
> Best regards,
> Martijn Grendelman
>
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[ovirt-users] iSCSI domain on 4kn drives

2016-08-04 Thread Martijn Grendelman
Hi,

Does oVirt support iSCSI storage domains on target LUNs using a block
size of 4k?

Best regards,
Martijn Grendelman

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