iSCSI errors - poor performance...
Hi
I have finally managed to publish my FreeNAS as a iSCSI target to my Windows 2008 server.
Things seemed to work as expected but once I tried to put some load on the system I am seeing very poor performance (about 20Mb/s sustained write) and, more worrying, lot of errors being reported both in the windows event log
and the Freenas log
Anything I can do about it !?
Thanks
Hi
I have finally managed to publish my FreeNAS as a iSCSI target to my Windows 2008 server.
Things seemed to work as expected but once I tried to put some load on the system I am seeing very poor performance (about 20Mb/s sustained write) and, more worrying, lot of errors being reported both in the windows event log
Code:
Log Name: System Source: iScsiPrt Date: 2012-04-25 01:27:41 Event ID: 9 Task Category: None Level: Error Keywords: Classic User: N/A Computer: myserver.domain.local Description: Target did not respond in time for a SCSI request. The CDB is given in the dump data. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="iScsiPrt" /> <EventID Qualifiers="49152">9</EventID> <Level>2</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2012-04-24T23:27:41.528174200Z" /> <EventRecordID>28344</EventRecordID> <Channel>System</Channel> <Computer>myserver.domain.local</Computer> <Security /> </System> <EventData> <Data>\Device\RaidPort1</Data> <Binary>000054000100000000000000090000C00000000000000000000000000000000000000000000000002A00009E552000020000690071006E002E0032003000310031002D00300033002E006500780061006D0070006C0065002E006F00720067002E00690073007400670074003A0066007200650065006E0061007300</Binary> </EventData> </Event>
and the Freenas log
Code:
Apr 25 01:28:07 freenas istgt[2249]: istgt_lu_disk.c:5209:istgt_lu_disk_queue_start: ***WARNING*** transfer abort CmdSN=42996 Apr 25 01:28:07 freenas istgt[2249]: istgt_lu.c:2865:luworker: ***WARNING*** LU1: lu_disk_queue_start() aborted Apr 25 01:28:43 freenas istgt[2249]: istgt_iscsi.c: 777:istgt_iscsi_write_pdu_internal: ***ERROR*** iscsi_write() failed (errno=32) Apr 25 01:28:43 freenas istgt[2249]: istgt_iscsi.c:3518:istgt_iscsi_task_response: ***ERROR*** iscsi_write_pdu() failed Apr 25 01:28:43 freenas istgt[2249]: istgt_iscsi.c:4967:sender: ***ERROR*** iscsi_task_response() failed on iqn.2011-03.example.org.istgt:freenas,t,0x0001(iqn.1991-05.com.microsoft:myserver.domain.local,i,0x400001370001) Apr 25 01:28:43 freenas istgt[2249]: istgt_iscsi.c: 777:istgt_iscsi_write_pdu_internal: ***ERROR*** iscsi_write() failed (errno=32) Apr 25 01:28:43 freenas istgt[2249]: istgt_iscsi.c:4984:sender: ***ERROR*** iscsi_write_pdu() failed on iqn.2011-03.example.org.istgt:freenas,t,0x0001(iqn.1991-05.com.microsoft:myserver.domain.local,i,0x400001370001) Apr 25 01:28:43 freenas istgt[2249]: Login from iqn.1991-05.com.microsoft:myserver.domain.local (172.16.100.5) on iqn.2011-03.example.org.istgt:freenas LU1 (172.16.100.10:3260,1), ISID=400001370001, TSIH=4, CID=1, HeaderDigest=off, DataDigest=off Apr 25 01:34:53 freenas istgt[2249]: Configuration refresh requested from 172.16.100.10
Anything I can do about it !?
Thanks