Hello Felipe, I'm not sure about anyone else, but I wouldn't expect that tweaking the iSCSI settings you've been talking about will improve this.
Have you tested just connecting from server to storage via iSCSI? Take NFS out of the picture. iSCSI is very dependent on the network. What kind of switch are you using? Is flowcontrol enabled? Have you configured MPIO? With just iSCSI you can potentially getting better triage data from the iSCSId logs. don On Wed, May 13, 2015 at 10:24 AM, Felipe Gutierrez <fel...@usto.re> wrote: > I am using async option to export me nfs disk. > http://unixhelp.ed.ac.uk/CGI/man-cgi?exports > > This help all writes on the disk to be very fast. > > > On Saturday, May 9, 2015 at 2:05:19 PM UTC-3, Felipe Gutierrez wrote: >> >> Hi, I am using jscsi.org target and open-iscsi initiator. Through NFS I >> can copy a bunch of files and it seems ok. When I execute a virtual machine >> from vmware (vmware -> NFS -> open-iscsi -> target jscsi) the target throws >> a broken pipe some times. THe initiator reestabilish the connection, but >> this broken pipe is corrupting my VM file system. >> >> On a good work my target sends SCSIResponseParser PDU and after that >> receives SCSICommandParser PDU from the initiator. When the broken pipe is >> up to happen the target sends SCSIResponseParser PDU and does not receive >> SCSICommandParser PDU. Instead of it, the target receives after 5 seconds >> NOPOutParser PDU, and sends NOPInParser PDU. After 60 seconds my target >> receives TaskManagementFunctionRequestParser PDU with OpCode: 0x2, which >> means to abort the task. So, the target do what the initiator is asking. >> The broken pipe happens ans a nes connections is estabilished. >> >> My question is, why the initiator does not keep the comunication after >> the SCSIResponseParser PDU sent by the target? Is there any way to see if >> this message is wrong? Or any initiator log error? >> Here is the target debug. >> >> (228)19:19:01 DEBUG [main] fullfeature.WriteStage - PDU sent 4: >> ParserClass: SCSIResponseParser >> ImmediateFlag: false >> OpCode: 0x21 >> FinalFlag: true >> TotalAHSLength: 0x0 >> DataSegmentLength: 0x0 >> InitiatorTaskTag: 0x28000010 >> Response: 0x0 >> SNACK TAG: 0x0 >> StatusSequenceNumber: 0xc8a >> ExpectedCommandSequenceNumber: 0xc6e >> MaximumCommandSequenceNumber: 0xc6e >> ExpDataSN: 0x0 >> BidirectionalReadResidualOverflow: false >> BidirectionalReadResidualUnderflow: false >> ResidualOverflow: false >> ResidualUnderflow: false >> ResidualCount: 0x0 >> Bidirectional Read Residual Count: 0x0 >> >> (273)19:19:06 DEBUG [main] connection.TargetSenderWorker - Receiving this >> PDU: >> ParserClass: NOPOutParser >> ImmediateFlag: true >> OpCode: 0x0 >> FinalFlag: true >> TotalAHSLength: 0x0 >> DataSegmentLength: 0x0 >> InitiatorTaskTag: 0x29000010 >> LUN: 0x0 >> Target Transfer Tag: 0xffffffff >> CommandSequenceNumber: 0xc6e >> ExpectedStatusSequenceNumber: 0xc8b >> >> (144)19:19:06 DEBUG [main] connection.TargetSenderWorker - >> connection.getStatusSequenceNumber: 3211 >> (167)19:19:06 DEBUG [main] connection.TargetSenderWorker - Sending this >> PDU: >> ParserClass: NOPInParser >> ImmediateFlag: false >> OpCode: 0x20 >> FinalFlag: true >> TotalAHSLength: 0x0 >> DataSegmentLength: 0x0 >> InitiatorTaskTag: 0x29000010 >> LUN: 0x0 >> Target Transfer Tag: 0xffffffff >> StatusSequenceNumber: 0xc8b >> ExpectedCommandSequenceNumber: 0xc6e >> MaximumCommandSequenceNumber: 0xc6e >> >> (228)19:19:11 DEBUG [main] connection.TargetSenderWorker - Receiving this >> PDU: >> ParserClass: NOPOutParser >> ImmediateFlag: true >> OpCode: 0x0 >> FinalFlag: true >> TotalAHSLength: 0x0 >> DataSegmentLength: 0x0 >> InitiatorTaskTag: 0x2a000010 >> LUN: 0x0 >> Target Transfer Tag: 0xffffffff >> CommandSequenceNumber: 0xc6e >> ExpectedStatusSequenceNumber: 0xc8c >> >> >> .... >> ... >> ... >> ... >> (228)19:20:02 DEBUG [main] connection.TargetSenderWorker - Receiving this >> PDU: >> ParserClass: TaskManagementFunctionRequestParser >> ImmediateFlag: true >> OpCode: 0x2 >> FinalFlag: true >> TotalAHSLength: 0x0 >> DataSegmentLength: 0x0 >> InitiatorTaskTag: 0x36000010 >> LUN: 0x0 >> Referenced Task Tag: 0x6b000010 >> CommandSequenceNumber: 0xc6e >> ExpectedStatusSequenceNumber: 0xc98 >> RefCmdSN: 0xab6 >> ExpDataSN: 0x0 >> >> >> Thanks, Felipe >> > -- > You received this message because you are subscribed to the Google Groups > "open-iscsi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to open-iscsi+unsubscr...@googlegroups.com. > To post to this group, send email to open-iscsi@googlegroups.com. > Visit this group at http://groups.google.com/group/open-iscsi. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. 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