[OpenIndiana-discuss] Limit - 255 iSCSI targets

[Geoff Nordli]

I created an RFE for it:

https://www.illumos.org/issues/3694

thanks Mike for digging the code links out.

Geoff

On 13-04-01 05:47 PM, Mike La Spina wrote:
> Hi Geoff,
>
> It looks like the itadm utility is limiting the number of targets. I have not walked all the code but I do not see any reason this cannot be increased to 1024 in the itadm user utility.
>
> http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libiscsit/common/libiscsit.h
>
>
> 43<http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libiscsit/common/libiscsit.h#43>#define  MAX_TARGETS<http://src.illumos.org/source/s?refs=MAX_TARGETS&project=illumos-gate> 255 /* maximum targets that may be created */
>
>
> You could submit an RFE for this one, it does look like a simple change.
>
> Normally I would say 255 is more that a server should have defined but if the targets are largely idle then more than 255 would be a possible use case. Also with the ever increasing hardware capability emerging 255 will soon become a low limit.
>
>
> Regards,
>
> Mike
>
> On 2013-04-01, at 7:59 AM, "Geoff Nordli" <geoffn at gnaa.net<mailto:geoffn at gnaa.net>> wrote:
>
> On 13-03-31 01:20 AM, Mike La Spina wrote:
> The maximum is actually 1024 on the iscsi port end:
>
> xref: /illumos-gate/usr/src/uts/common/io/comstar/port/iscsit/iscsit.h
>
> 55/* Max targets per system */
> 56#define    ISCSIT_MAX_TARGETS    1024
>
> How have you determined it's 255?
>
> Hi Mike.
>
> I tested it using a for loop to create > 255
>
> for i in {1..260}; do itadm create-target; done
>
> then it will error out with the:
>
> "Maximum of 255 iSCSI targets
> itadm create-target failed with error 7
>
> 255 is a bit small, but 1024 would be enough for us; really it ought to be enough for anyone :)
>
> Geoff
>
>