Thanks Matthew for you help. I will go through the SPC-4 and read about it. But I tried the same (above) thing and try to connect the target through open iscsi initiator.In this case on target got 4 as a allocation length (for page of 3f). So how to respond information of all pages in those 4 bytes? or any thing wrong is happening? Correct me if I am wrong. Thanks once again. On Fri, Apr 24, 2009 at 5:53 PM, Matthew Wilcox <matthew@xxxxxx> wrote: > On Fri, Apr 24, 2009 at 03:26:10AM -0700, VaibhavNipunage wrote: >> When initiator sends Mode Sense (0x1Ah) with requested page opcode (0x3F : >> all pages), then at that time on target side, target got the Allocation >> Length as 192. I dont know why it is getting 192 size. I read PC-3 doc, >> according to that target should receive 256 (for MODE SENSE 6) or 65,536 >> (for MODE SENSE 10). I am confused why this is happening? > > Allocation Length is the amount of space the initiator has available > for the response. It can be any length (including zero, which SPC4 is > very clear is not an error). See section 4.3.5.6 Allocation length in > spc4r14 or 4.3.4.6 Allocation length in spc3r23. > > -- > Matthew Wilcox Intel Open Source Technology Centre > "Bill, look, we understand that you're interested in selling us this > operating system, but compare it to ours. We can't possibly take such > a retrograde step." > -- Vaibhav Nipunage Systems Engineer QualEx Systems Pvt. Ltd. www.qualexsystems.com -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html