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關(guān)于ISCSI-TARGET的問(wèn)題，請(qǐng)大大幫忙 [復(fù)制鏈接]

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發(fā)表于 2009-04-13 11:20 |只看該作者 |倒序?yàn)g覽

現(xiàn)在有兩組服務(wù)器，其中一臺(tái)服務(wù)器做iscsi-target ，做存儲(chǔ)的服務(wù)端，配置文件如下：\r\n

Target iqn.2009-03.test.iscsi:storage.diske2.sys1.xyz\r\n # Users, who can access this target. The same rules as for discovery\r\n # users apply here.\r\n # Leave them alone if you don\'t want to use authentication.\r\n #IncomingUser joe secret\r\n #OutgoingUser jim 12charpasswd\r\n # Logical Unit definition\r\n # You must define one logical unit at least.\r\n # Block devices, regular files, LVM, and RAID can be offered\r\n # to the initiators as a block device.\r\n Lun 0 Path=/iso/iscsi.iso,Type=fileio\r\n # Alias name for this target\r\n Alias iSCSI\r\n # various iSCSI parameters\r\n # (not all are used right now, see also iSCSI spec for details)\r\n #MaxConnections 1\r\n #InitialR2T Yes\r\n #ImmediateData No\r\n #MaxRecvDataSegmentLength 8192\r\n #MaxXmitDataSegmentLength 8192\r\n #MaxBurstLength 262144\r\n #FirstBurstLength 65536\r\n #DefaultTime2Wait 2\r\n #DefaultTime2Retain 20\r\n #MaxOutstandingR2T 8\r\n #DataPDUInOrder Yes\r\n #DataSequenceInOrder Yes\r\n #ErrorRecoveryLevel 0\r\n #HeaderDigest CRC32C,None\r\n #DataDigest CRC32C,None\r\n # various target parameters\r\n #Wthreads 8

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\r\n基本上沒(méi)做什么策略，最簡(jiǎn)單的開(kāi)啟了iscsi-target的進(jìn)程\r\n\r\n客戶端上也沒(méi)有任何的策略，在/etc/iscsi.conf的末尾加了如下兩行：\r\n

DiscoveryAddress=10.0.0.152:3260\r\nTargetName=iqn.2009-03.test.iscsi:storage.diske2.sys1.xyz

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\r\n\r\n起來(lái)服務(wù)之后，通過(guò)netstat 可以看到有連接成功的，也可以進(jìn)行分區(qū)，也可以掛載磁盤，進(jìn)行讀寫。\r\n但是有個(gè)問(wèn)題，只要一起客戶端的iscsi服務(wù)（進(jìn)程名為iscsid），cpu的iowait一直居高不下，想問(wèn)問(wèn)大大，這個(gè)是不是因?yàn)閕scsi的服務(wù)引起的，那改怎么做呢？