[ovirt-users] Re: Support for Shared SAS storage

2020-08-13 Thread Michal Skrivanek


> On 12 Aug 2020, at 21:16, tho...@hoberg.net wrote:
> 
> 
>> 
>> Since 4.4 is the last feature release, this will never change even if it is 
>> not
>> documented.
>> 
>> Nir
> Hi Nir,
> could you please clarfiy: What does "last feature release" mean here: Is 
> oVirt being feature frozen in preparation to something more drastic?

no, features are not frozen. We’re moving to a mode where we deliver features 
in shorter cycles, in 4.4.z instead of one large 10+ month major release. (e.g. 
in 4.4.3 there’s 25 RFEs targeted currently)

That said, about the original discussion point - it’s very unlikely we’ll 
change behavior and we’ll keep treating any non-iscsi multipath devices as FC 
since it works good enough and actually enables special use cases 

Thanks,
michal

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[ovirt-users] Re: Support for Shared SAS storage

2020-08-12 Thread thomas

> 
> Since 4.4 is the last feature release, this will never change even if it is 
> not
> documented.
> 
> Nir
Hi Nir,
could you please clarfiy: What does "last feature release" mean here: Is oVirt 
being feature frozen in preparation to something more drastic?
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-12 Thread Nir Soffer
On Wed, Aug 12, 2020 at 9:46 AM Lao Dh  wrote:

> Update for all. The deployment finally detect the SAS collected storage.
> After manual compile the driver for the RAID control PCI card.
> Nir is correct. FC detect anything that is not "NFS, iSCSI". As this time
> it also detect a local connected SATA SSD.
>

You should blacklist this local device, see the instructions in
/etc/multipath.conf.


> 2020年8月10日月曜日 1:55:37 GMT+8、Nir Soffer が書いたメール:
>
>
> On Sat, Aug 8, 2020 at 6:56 AM Jeff Bailey  wrote:
> >
> > I haven't tried with 4.4 but shared SAS works just fine with 4.3 (and
> has for many, many years).  You simply treat it as Fibre Channel.  If your
> LUNs aren't showing up I'd make sure they're being claimed as multipath
> devices.  You want them to be.  After that, just make sure they're
> sufficiently wiped so they don't look like they're in use.
>
> Correct. FC in oVirt means actually not "iSCSI". Any device - including
> local
> devices - that multipath expose, and is not iSCSI is considered as FC.
>
> This is not officially supported and not documented anywhere. I learned
> about it only we tried to deploy strict multipath blacklist allowing
> only "iscsi"
> or "fc" transport, and found that it broke users' setups with sas other
> esoteric
> storage.
>
> Since 4.4 is the last feature release, this will never change even if it
> is not
> documented.
>
> Nir
>
> > On 8/7/2020 10:49 PM, Lao Dh via Users wrote:
> >
> > Wow. That's sound bad. Then what storage type you choose at last (with
> your SAS connected storage)? VMware vSphere support DAS. Red Hat should do
> something.
> >
> > 2020年8月8日土曜日 4:06:34 GMT+8、Vinícius Ferrão via Users  >が書いたメール:
> >
> >
> > No, there’s no support for direct attached shared SAS storage on
> oVirt/RHV.
> >
> > Fibre Channel is a different thing that oVirt/RHV supports.
> >
> > > On 7 Aug 2020, at 08:52, hkexdong--- via Users 
> wrote:
> > >
> > > Hello Vinícius,
> > > Do you able to connect the SAS external storage?
> > > Now I've the problem during host engine setup. Select Fibre Channel
> and end up show "No LUNS found".
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-12 Thread Lao Dh via Users
 Update for all. The deployment finally detect the SAS collected storage. After 
manual compile the driver for the RAID control PCI card.Nir is correct. FC 
detect anything that is not "NFS, iSCSI". As this time it also detect a local 
connected SATA SSD.
2020年8月10日月曜日 1:55:37 GMT+8、Nir Soffer が書いたメール:  
 
 On Sat, Aug 8, 2020 at 6:56 AM Jeff Bailey  wrote:
>
> I haven't tried with 4.4 but shared SAS works just fine with 4.3 (and has for 
> many, many years).  You simply treat it as Fibre Channel.  If your LUNs 
> aren't showing up I'd make sure they're being claimed as multipath devices.  
> You want them to be.  After that, just make sure they're sufficiently wiped 
> so they don't look like they're in use.

Correct. FC in oVirt means actually not "iSCSI". Any device - including local
devices - that multipath expose, and is not iSCSI is considered as FC.

This is not officially supported and not documented anywhere. I learned
about it only we tried to deploy strict multipath blacklist allowing
only "iscsi"
or "fc" transport, and found that it broke users' setups with sas other esoteric
storage.

Since 4.4 is the last feature release, this will never change even if it is not
documented.

Nir

> On 8/7/2020 10:49 PM, Lao Dh via Users wrote:
>
> Wow. That's sound bad. Then what storage type you choose at last (with your 
> SAS connected storage)? VMware vSphere support DAS. Red Hat should do 
> something.
>
> 2020年8月8日土曜日 4:06:34 GMT+8、Vinícius Ferrão via Users が書いたメール:
>
>
> No, there’s no support for direct attached shared SAS storage on oVirt/RHV.
>
> Fibre Channel is a different thing that oVirt/RHV supports.
>
> > On 7 Aug 2020, at 08:52, hkexdong--- via Users  wrote:
> >
> > Hello Vinícius,
> > Do you able to connect the SAS external storage?
> > Now I've the problem during host engine setup. Select Fibre Channel and end 
> > up show "No LUNS found".
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>
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-09 Thread Nir Soffer
On Sat, Aug 8, 2020 at 6:56 AM Jeff Bailey  wrote:
>
> I haven't tried with 4.4 but shared SAS works just fine with 4.3 (and has for 
> many, many years).  You simply treat it as Fibre Channel.  If your LUNs 
> aren't showing up I'd make sure they're being claimed as multipath devices.  
> You want them to be.  After that, just make sure they're sufficiently wiped 
> so they don't look like they're in use.

Correct. FC in oVirt means actually not "iSCSI". Any device - including local
devices - that multipath expose, and is not iSCSI is considered as FC.

This is not officially supported and not documented anywhere. I learned
about it only we tried to deploy strict multipath blacklist allowing
only "iscsi"
or "fc" transport, and found that it broke users' setups with sas other esoteric
storage.

Since 4.4 is the last feature release, this will never change even if it is not
documented.

Nir

> On 8/7/2020 10:49 PM, Lao Dh via Users wrote:
>
> Wow. That's sound bad. Then what storage type you choose at last (with your 
> SAS connected storage)? VMware vSphere support DAS. Red Hat should do 
> something.
>
> 2020年8月8日土曜日 4:06:34 GMT+8、Vinícius Ferrão via Users が書いたメール:
>
>
> No, there’s no support for direct attached shared SAS storage on oVirt/RHV.
>
> Fibre Channel is a different thing that oVirt/RHV supports.
>
> > On 7 Aug 2020, at 08:52, hkexdong--- via Users  wrote:
> >
> > Hello Vinícius,
> > Do you able to connect the SAS external storage?
> > Now I've the problem during host engine setup. Select Fibre Channel and end 
> > up show "No LUNS found".
> > ___
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>
>
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-08 Thread Lao Dh via Users
 Jeff. Your answer inspire me. I'm going to try it again. :)

2020年8月8日土曜日 12:31:16 GMT+8、Vinícius Ferrão via Users 
が書いたメール:  
 
 Really??
Treat it as FC??
Thats new for me.


On 8 Aug 2020, at 00:35, Jeff Bailey  wrote:

I haven't tried with 4.4 but shared SAS works just fine with 4.3 (and has for 
many, many years).  You simply treat it as Fibre Channel.  If your LUNs aren't 
showing up I'd make sure they're being claimed as multipath devices.  You want 
them to be.  After that, just make sure they're sufficiently wiped so they 
don't look like they're in use.



On 8/7/2020 10:49 PM, Lao Dh via Users wrote:

Wow. That's sound bad. Then what storage type you choose at last (with your SAS 
connected storage)? VMware vSphere support DAS. Red Hat should do something.

2020年8月8日土曜日 4:06:34 GMT+8、Vinícius Ferrão via Users が書いたメール: 

No, there’s no support for direct attached shared SAS storage on oVirt/RHV.

Fibre Channel is a different thing that oVirt/RHV supports.

> On 7 Aug 2020, at 08:52, hkexdong--- via Users  wrote:
> 
> Hello Vinícius,
> Do you able to connect the SAS external storage?
> Now I've the problem during host engine setup. Select Fibre Channel and end 
> up show "No LUNS found".
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-07 Thread Vinícius Ferrão via Users
Really??

Treat it as FC??

Thats new for me.


On 8 Aug 2020, at 00:35, Jeff Bailey 
mailto:bai...@cs.kent.edu>> wrote:


I haven't tried with 4.4 but shared SAS works just fine with 4.3 (and has for 
many, many years).  You simply treat it as Fibre Channel.  If your LUNs aren't 
showing up I'd make sure they're being claimed as multipath devices.  You want 
them to be.  After that, just make sure they're sufficiently wiped so they 
don't look like they're in use.


On 8/7/2020 10:49 PM, Lao Dh via Users wrote:
Wow. That's sound bad. Then what storage type you choose at last (with your SAS 
connected storage)? VMware vSphere support DAS. Red Hat should do something.

2020年8月8日土曜日 4:06:34 GMT+8、Vinícius Ferrão via Users 
が書いたメール:


No, there’s no support for direct attached shared SAS storage on oVirt/RHV.

Fibre Channel is a different thing that oVirt/RHV supports.

> On 7 Aug 2020, at 08:52, hkexdong--- via Users 
> mailto:users@ovirt.org>> wrote:
>
> Hello Vinícius,
> Do you able to connect the SAS external storage?
> Now I've the problem during host engine setup. Select Fibre Channel and end 
> up show "No LUNS found".
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-07 Thread Jeff Bailey
I haven't tried with 4.4 but shared SAS works just fine with 4.3 (and 
has for many, many years).  You simply treat it as Fibre Channel.  If 
your LUNs aren't showing up I'd make sure they're being claimed as 
multipath devices.  You want them to be.  After that, just make sure 
they're sufficiently wiped so they don't look like they're in use.



On 8/7/2020 10:49 PM, Lao Dh via Users wrote:
Wow. That's sound bad. Then what storage type you choose at last (with 
your SAS connected storage)? VMware vSphere support DAS. Red Hat 
should do something.


2020年8月8日土曜日 4:06:34 GMT+8、Vinícius Ferrão via Users 
が書いたメール:



No, there’s no support for direct attached shared SAS storage on 
oVirt/RHV.


Fibre Channel is a different thing that oVirt/RHV supports.

> On 7 Aug 2020, at 08:52, hkexdong--- via Users > wrote:

>
> Hello Vinícius,
> Do you able to connect the SAS external storage?
> Now I've the problem during host engine setup. Select Fibre Channel 
and end up show "No LUNS found".

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[ovirt-users] Re: Support for Shared SAS storage

2020-08-07 Thread Lao Dh via Users
 Wow. That's sound bad. Then what storage type you choose at last (with your 
SAS connected storage)? VMware vSphere support DAS. Red Hat should do something.

2020年8月8日土曜日 4:06:34 GMT+8、Vinícius Ferrão via Users 
が書いたメール:  
 
 No, there’s no support for direct attached shared SAS storage on oVirt/RHV.

Fibre Channel is a different thing that oVirt/RHV supports.

> On 7 Aug 2020, at 08:52, hkexdong--- via Users  wrote:
> 
> Hello Vinícius,
> Do you able to connect the SAS external storage?
> Now I've the problem during host engine setup. Select Fibre Channel and end 
> up show "No LUNS found".
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-07 Thread Vinícius Ferrão via Users
No, there’s no support for direct attached shared SAS storage on oVirt/RHV.

Fibre Channel is a different thing that oVirt/RHV supports.

> On 7 Aug 2020, at 08:52, hkexdong--- via Users  wrote:
> 
> Hello Vinícius,
> Do you able to connect the SAS external storage?
> Now I've the problem during host engine setup. Select Fibre Channel and end 
> up show "No LUNS found".
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[ovirt-users] Re: Support for Shared SAS storage

2020-08-07 Thread hkexdong--- via Users
Hello Vinícius,
Do you able to connect the SAS external storage?
Now I've the problem during host engine setup. Select Fibre Channel and end up 
show "No LUNS found".
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