Sharad Chandra wrote:
> On Thursday 04 October 2007 6:51 pm, Eric Anderson wrote:
>> Sharad Chandra wrote:
>>> Hello,
>>>
>>> How to distinguish if /dev/da* devices are internal scsi drivers
or LUNs
>>> of external SAN?
>> camcontrol devlist -v
>>
>> Might help you..
>>
>> Eric
Yes, right by analyzing camcontrol devlist it can be told, but i guess not
always.
[EMAIL PROTECTED] ~]# camcontrol devlist
<IFT A16F-G2422 348C> at scbus0 target 0 lun 0 (da0,pass0)
<IFT A16F-G2422 348C> at scbus0 target 0 lun 1 (da1,pass1)
<IFT A16F-G2422 348C> at scbus0 target 0 lun 2 (da2,pass2)
<IFT A16F-G2422 348C> at scbus0 target 0 lun 3 (da3,pass3)
Here luns are increasing, so it is SAN confirmed by tool. Now my point is if i
have a SAN of less than 1TB and i make only 1 LUN. what should be output?
guessing: similar to
<IFT A16F-G2422 348C> at scbus0 target 0 lun 0 (da0,pass0)
Then it will be difficult to tell, whether it is regular SCSI drives or SAN.
Then we need a tool that can tell this da0 belongs to SAN/SCSI or not
Notice the -v to camcontrol. It will tell you which controller the
device belongs to, and the controller will help you determine whether it
is connected to a SAN or not.
Other than that, I'm not sure of the distinction that could be made
between the devices whether it is on a SAN or not. It could be a
directly connected fiber channel device, in which case, it isn't quite a
SAN, yet the FreeBSD system doesn't know (or care) how it's connected.
Eric
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