Re: Send Reject PDU when orignal to-be-rejected PDU is notavailable
HUJason <[email protected]> Wed, 16 Apr 2008 11:45:43 +0800
| Newsgroups | gmane.ietf.ips |
|---|---|
| Message-ID | <[email protected]> |
Hi David, Thank you for the suggestion. A little more to consider is that it seems that whatever mechanisms we use, as a target, we must reserve all PDU header comes from Initiator until the coressponding statSN is explicitly acked. For a resource-limted iscsi target engine(all SCSI data is on host, so it is not in this question), It can be considered as a big memory consumer and becomes a bottlenack. Best Regards, Jason From: [email protected]: RE: [Ips] Send Reject PDU when orignal to-be-rejected PDU is notavailableDate: Tue, 15 Apr 2008 23:04:15 -0400To: [email protected]; [email protected] The original PDU header has to be sent back so that the initiator knows what was rejected. iSCSI has a number of mechanisms that can be used by the target to control resource consumption and those should be used to ensure that adequate resources are available to deal with the PDU that is to be rejected. Thanks, --David ----------------------------------------------------David L. Black, Distinguished EngineerEMC Corporation, 176 South St., Hopkinton, MA 01748+1 (508) 293-7953 FAX: +1 (508) [email protected] Mobile: +1 (978) 394-7754---------------------------------------------------- From: [email protected] [mailto:[email protected]] On Behalf Of HUJasonSent: Tuesday, April 15, 2008 9:59 PMTo: [email protected]: [Ips] Send Reject PDU when orignal to-be-rejected PDU is notavailable Dears, I am curently implement iscsi target on a resource-limted device. In my implementation, orignal to-be-rejected PDU is not available when it realised that a Reject should be sent to initiator. But as RFC3720 said, Target must send back the orignal PDU as the Reject's payload. So my question is: Why we need to send back the orignal PDU ? Can we simply eliminate it? Thanks! Best Regards, Jason “七件武器，七种完美” 立刻体验！ _________________________________________________________________ 用手机MSN聊天写邮件看空间，无限沟通，分享精彩！ http://mobile.msn.com.cn/ _______________________________________________ Ips mailing list [email protected] https://www.ietf.org/mailman/listinfo/ips