EMC陣列Dirty-Cache清除及EMCRemote安裝配置

1、EMC陣列Dirty Cache清除及EMCRemote安裝配置適用環(huán)境： FC4700，CLARiiON CX200，CLARiiON CX400， CLARiiON CX600，prior to and including release11(02.04.x)EMC dirty cache故障出現(xiàn)原因及現(xiàn)象：正常情況下，當陣列系統(tǒng)關(guān)機或斷電時，Write Cache內(nèi)的數(shù)據(jù)會在SPS供電的時間內(nèi)保存至Vault Disk中，而此時若SPS有故障或者其他原因?qū)е略摂?shù)據(jù)保存過程無法實現(xiàn)時，此時陣列的LUN可能會因變成Unowned狀態(tài)，而導致主機無法識別到盤陣空間。報錯信息如下：Enclosu

2、re 0 Disk 5 0x90a (Can't Assign - Cache Dirty) 0 0xafb40 0x14362c故障清除方法： 1.運行EMCRemote（其安裝及配置在后文中有描述）連接到要清除dirty cache的LUNdefault owner所在的控制器中。 2.雙擊運行桌面中CMD,打開dos窗口，在c:提示符下輸入admintool.exe回車顯示如下主菜單： = Main Menu = 0: Exit 1: Test 2: Recovery 選擇2：進入recovery目錄如下：= Recovery Menu = 0: Exit 1: Clear Tr

3、ansactLog 2: Fix up Transaction 3: Test Layered Driver 4: Scrub lu 5: SP Control 6: Fix Device Map (N/A) 7: Clear Cache Dirty LU 8. Make Flare LUN Public Selection0:選擇7. Clear Cache Dirty LU 顯示提示如下The Cache Dirty flag on the indicated LUN is cleared, and the LUN is assigned to the current SP. In a d

4、ual SP environment, this parameter will only be accepted on the SP that is the default owner of the LUN. The LUN will then be available, but will contain inconsistent data. Some data blocks that have been acknowledged to the host have having been written will in face be unmodified. It is the custome

5、r's responsibility to perform whatever data recovery or repair operations are needed by the customer's application. Enter passcode: 輸入密碼：0x7476，系統(tǒng)會列出發(fā)生dirty cache的lun的列表，此處是flare中的lun號，與navisphere中略有區(qū)別，是以3位來表示的，如navisphere中l(wèi)un3此處顯示003，具體輸出顯示如下：The following LUNs are marked as unassigned. Thi

6、s CAN be an indication that they are in a Cache Dirty state. 003 004 Enter LU number to clear, or 'x' to quit選擇對應LUN號 003， 顯示如下: Clear Cache Dirty bits on 3? <Yy/Nn> n Enter Y for yes to Clear, you will see; Clear Cache Dirty SUCCEDED for lu 3 The following LUNs are marked as unassigne

7、d. This can indicate that they are in a Cache Dirty state. 003 004 Enter LU number to clear, or 'x' to quit:若有多個dirty cache重復此操作，正常情況下當下一個lun clear完成或輸入x選項退出admintool工具重新進入后，lun會自動回到default owner控制之下。若清除未能完成，則需要在連接了所屬控制器的EMCremote中，進入fcli，使用cld命令清除write cache，也可在Navisphere中將使write cache 處于di

8、sable狀態(tài)，此時再使用admintool清除即可。注1：此處的write cache是目標LUN的，并不是整個存儲陣列的，另外操作完成后要確保cache都已恢復enable狀態(tài)。注2：該操作雖然正常不會導致整個LUN數(shù)據(jù)的丟失，但write cache內(nèi)數(shù)據(jù)因被清除無法找回來，所以操作前需要跟客戶講明白，得到許可后才可操作。EMCRemote安裝及配置：1. 先運行vcredist_x86.exe，安裝Visual C+ Runtime Libraries。 選是后自動安裝，完成后窗口會自動關(guān)閉。2. 運行安裝sr_tpm_full.exe，過程中需要輸入License 及密碼raii，其他基本上保留默認配置即可，具體過程如下：解壓文件后輸入密碼EMC按照默認設置一直選NEXT安裝即可3.安裝完成初次運行需要做一些配置輸入密碼raii選OK，后進入如下界面，選next 輸入連接描述輸入用戶名密碼：LogID:clariionPassword:clario