Hi Torrey,

Most things in concern is in documentations, please kindly refer to my 
answers inline.
Torrey McMahon wrote:
> Hi Mark and company.
>
> How will the installer, and the customer, know that they can't use the 
> iSCSI boot device as dump device? How does that get squared away with 
> swap devices being the default dump device? Will dumpadm detect that 
> the system is using iSCSI and produce an error?
Currently the installer is unaware of this part. Customer can find this 
piece of information on the administration guide, located at
http://wikis.sun.com/display/OpenSolarisInfo/Configuring+iSCSI+Boot+for+x86+Systems
http://wikis.sun.com/display/OpenSolarisInfo/Configuring+iSCSI+Boot+for+SPARC+Systems
It is recommended to let administrator decide/configure dedicated dump 
device in the guide, and by default the dump device is configured as a 
partition/vol on the iSCSI disk for the case where no local storage is 
available (commonly seen in iSCSI boot environment). dumpadm doesn't 
produce errors for such a configuration, and it also will introduce 
extra work/dependency to make it aware of iSCSI transport.
>
> What rev of SPARC OBP will support this? Will the installer be able to 
> differentiate and warn the user they're supported or not based on OBP 
> rev or, on x86, the NIC in the system?
>
The prerequisites for SPARC is documented at,
http://wikis.sun.com/display/OpenSolarisInfo/Configuring+iSCSI+Boot+for+SPARC+Systems.
Specially, the obp version is 4.3.2 and can be confirmed by the presence 
of 'show-iscsi' command in 'OK' prompt.
Unfortunately the differentiation in installer is not present in neither 
opensolaris (caiman) installer nor the 'legacy' installer for SXCE and 
S10. There are some technical problems, especially on x86, to determine 
the capability because of the lacking of unified OS-level interface to 
check with NIC/firmware from different vendors (unless to perform an 
iSCSI boot).
Therefore administrators need to check the prerequisites section in 
administration guides listed above and confirm they're met before 
setting up an iSCSI boot environment.

Best regards,
Jack

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