Limit logins or connections to the same target LUN

Limit logins or connections to the same target LUN

[Gionatan Danti]

Hi all,
I would like to understand if, and how to, limit the maximum number of 
simultaneous connections (or logins) to a specific LUN (similar in how 
the "MaxSession" option worked in the old ietd).

I am exporting a LUN with a general purpose filesystem (non cluster 
aware) and I would be 100% sure that only a single machine at a time can 
mount it.

At the moment, I protected the iSCSI LUN with both an IP-based access 
list and a username/password combo, but hard limiting the maximum number 
of connections opened against it to 1 (one) would be a nice thing...

Also, I am aware of SCSI persistent reservations (sg_persist) but, while 
working well, they are somewhat harder to setup.

Thank you,
regards.

-- 
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@assyoma.it - info@assyoma.it
GPG public key ID: FF5F32A8

Re: Limit logins or connections to the same target LUN

[Gionatan Danti]

Il 28-02-2019 16:19 Gionatan Danti ha scritto:
> Hi all,
> I would like to understand if, and how to, limit the maximum number of
> simultaneous connections (or logins) to a specific LUN (similar in how
> the "MaxSession" option worked in the old ietd).
> 
> I am exporting a LUN with a general purpose filesystem (non cluster
> aware) and I would be 100% sure that only a single machine at a time
> can mount it.
> 
> At the moment, I protected the iSCSI LUN with both an IP-based access
> list and a username/password combo, but hard limiting the maximum
> number of connections opened against it to 1 (one) would be a nice
> thing...
> 
> Also, I am aware of SCSI persistent reservations (sg_persist) but,
> while working well, they are somewhat harder to setup.
> 
> Thank you,
> regards.

Hi all,
any suggestions?

Thanks.

-- 
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@assyoma.it - info@assyoma.it
GPG public key ID: FF5F32A8

Re: Limit logins or connections to the same target LUN

[Gionatan Danti]

Il 04-03-2019 18:25 Gionatan Danti ha scritto:
> Il 28-02-2019 16:19 Gionatan Danti ha scritto:
>> Hi all,
>> I would like to understand if, and how to, limit the maximum number of
>> simultaneous connections (or logins) to a specific LUN (similar in how
>> the "MaxSession" option worked in the old ietd).
>> 
>> I am exporting a LUN with a general purpose filesystem (non cluster
>> aware) and I would be 100% sure that only a single machine at a time
>> can mount it.
>> 
>> At the moment, I protected the iSCSI LUN with both an IP-based access
>> list and a username/password combo, but hard limiting the maximum
>> number of connections opened against it to 1 (one) would be a nice
>> thing...
>> 
>> Also, I am aware of SCSI persistent reservations (sg_persist) but,
>> while working well, they are somewhat harder to setup.
>> 
>> Thank you,
>> regards.
> 
> Hi all,
> any suggestions?
> 
> Thanks.

Sorry to ask again... does someone know the answer to my question? Am I 
posting on the wrong list?
Thanks.

-- 
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@assyoma.it - info@assyoma.it
GPG public key ID: FF5F32A8

Re: Limit logins or connections to the same target LUN

[Bart Van Assche]

On Thu, 2019-02-28 at 16:19 +-0100, Gionatan Danti wrote:
+AD4 I would like to understand if, and how to, limit the maximum number of 
+AD4 simultaneous connections (or logins) to a specific LUN (similar in how 
+AD4 the +ACI-MaxSession+ACI option worked in the old ietd).
+AD4 
+AD4 I am exporting a LUN with a general purpose filesystem (non cluster 
+AD4 aware) and I would be 100+ACU sure that only a single machine at a time can 
+AD4 mount it.
+AD4 
+AD4 At the moment, I protected the iSCSI LUN with both an IP-based access 
+AD4 list and a username/password combo, but hard limiting the maximum number 
+AD4 of connections opened against it to 1 (one) would be a nice thing...
+AD4 
+AD4 Also, I am aware of SCSI persistent reservations (sg+AF8-persist) but, while 
+AD4 working well, they are somewhat harder to setup.

Hi Danti,

As far as I know this is not yet supported by the SCSI target code. I think
the kernel code will have to be modified to add this functionality.

Bart.

Re: Limit logins or connections to the same target LUN

[Gionatan Danti]

Il 25-03-2019 20:13 Bart Van Assche ha scritto:
> Hi Danti,
> 
> As far as I know this is not yet supported by the SCSI target code. I 
> think
> the kernel code will have to be modified to add this functionality.
> 
> Bart.

Hi Bart,
thanks for the clear reply, it was really appreciated.

-- 
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@assyoma.it - info@assyoma.it
GPG public key ID: FF5F32A8