Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition | |||
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Solution Type Problem Resolution Sure Solution 1006505.1 : Best Practice for EMC Array Special LUN when connected to system running Solaris[TM] Operating System
PreviouslyPublishedAs 209103 Symptoms In the following hardware/software configuration environment: 1. EMC Symmetrix Serial Storage connected to Sun Server with Solaris[TM] Operating System 2. EMC CLARiiON Serial Storage connected to Sun server with Solaris [TM] Operating System The system reports frequentlys displays the following error messages upon a system reboot: WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060161106023d5,0 (ssd36): offline WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060161106023d5,0 (ssd36): offline NOTICE: vxvm:vxdmp: disabled path 118/0x120 belonging to the dmpnode 276/0xf8 WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060169106023d5,0 (ssd37): offline WARNING: /pci@bd,600000/SUNW,qlc@1,1/fp@0,0/ssd@w50060169106023d5,0 (ssd37): offline Using "iostat -E", ssd36 and ssd37 are found to be EMC CLARiiON Cx700 Array's presented special LUN - "LUNZ". # iostat -E | more ... ssd36 Soft Errors: 18 Hard Errors: 0 Transport Errors: 0 Vendor: DGC Product: LUNZ Revision: 0216 Serial No: Size: 0.00GB <0 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 18 Predictive Failure Analysis: 0 ssd37 Soft Errors: 18 Hard Errors: 0 Transport Errors: 0 Vendor: DGC Product: LUNZ Revision: 0216 Serial No: Size: 0.00GB <0 bytes> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0 Illegal Request: 18 Predictive Failure Analysis: 0 And similar warning messages can be noticed once "format" command is issued: # format Searching for disks...done c4t500604844A36E767d0: configured with capacity of 44.06MB c6t500604844A36E768d0: configured with capacity of 44.06MB Aug 31 16:53:40 domain3 Corrupt label; wrong magic number Aug 31 16:53:40 domain3 scsi: [ID 107833 kern.warning] WARNING: /pci@9d,600000/SUNW,qlc@1/fp@0,0/ssd@w500604844a36e767,0 (ssd0) : Aug 31 16:53:40 domain3 Corrupt label; wrong magic number Aug 31 16:53:40 domain3 scsi: [ID 107833 kern.warning] WARNING: /pci@bd,600000/SUNW,qlc@1/fp@0,0/ssd@w500604844a36e768,0 (ssd1) When running Sun[TM] Explorer to collect system information, the following WARNINGs messages are seen: explorer: [ID 702911 daemon.notice] Explorer started scsi: [ID 365881 kern.info] Vendor 'DGC', product 'LUNZ', (unknown capacity) scsi: [ID 107833 kern.warning] WARNING: /pci@7d,700000/SUNW,qlc@1/fp@0,0/ssd@w5006016930600f13,0 (ssd72): Error for Command: <undecoded cmd 0x5a> Error Level: Informational scsi: [ID 107833 kern.notice] Requested Block: 0 Error Block: 0 scsi: [ID 107833 kern.notice] Vendor: DGC Serial Number: 0000000000CL scsi: [ID 107833 kern.notice] Sense Key: Illegal Request scsi: [ID 107833 kern.notice] ASC: 0x25 (LUN not supported), ASCQ: 0x0, FRU: 0x0 scsi: [ID 107833 kern.warning] WARNING: /pci@7d,700000/SUNW,qlc@1/fp@0,0/ssd@w5006016930600f13,0 (ssd72): Error for Command: <undecoded cmd 0x25> Error Level: Informational scsi: [ID 107833 kern.notice] Requested Block: 0 Error Block: 0 scsi: [ID 107833 kern.notice] Vendor: DGC Serial Number: 0000000000CL Error for Command: test unit ready Error Level: Fatal scsi: [ID 107833 kern.notice] Requested Block: 0 Error Block: 0 scsi: [ID 107833 kern.notice] Vendor: DGC Serial Number: 0000000000CL scsi: [ID 107833 kern.notice] Sense Key: Not Ready scsi: [ID 107833 kern.notice] ASC: 0x4 (<vendor unique code 0x4>), ASCQ: 0x3, FRU: 0x0 ... explorer: [ID 702911 daemon.notice] Explorer completed ! After confirming with EMC Support engineers, the above LUNs which is LUN ID = 0(that is d0) is EMC Symmetrix Serial Storage - DMX serial storage Gatekeeper/VCM Database volumes(VCMDB). It is not for storing customer data, but for store storage used control and communications information. The above mentioned Special LUN, "LUNZ", comes from EMC CLARiiON Storage, it is for control and communications usage. Solaris Operating System will not use it as a data LUN. Resolution Field engineer can work with EMC engineer to make the above special LUNs from EMC array not be presented to Solaris Operating System. For Sun hosts connected to EMC Symmetrix Serial DMX storage, Sun engineer can inform customer that EMC engineer can request a modification of DMX Storage BIN file. Once EMC engineer agrees to help on this and the BIN file is modified, request a reconfigure reboot of the Solaris host. Then the Gatekeeper/VCM database Volumes (VCMDB) LUN related errors would disappear. For EMC CLARiiON CX700 Array's presented special LUN, "LUNZ", get help from EMC engineer to Disable "arraycommpath" setting on CX700 array for each Solaris Server which can be done via command "navicli". Once EMC engineer completes the settings, initiate reboot of Solaris Operating System, and then the "LUNZ" LUN would disappear as well. All above mentioned actions need EMC engineers' involvement. Sun Field engineers are not encouraged to do such configurations on an EMC array. Product Sun Fire E2900 Server Sun Fire E4900 Server Sun Fire E6900 Server Sun Fire 12K Server Sun Fire E20K Server Sun Fire E25K Server Sun Fire 15K Server Symmetrix, CLARiiON, Gatekeeper, VCM data base volume, LUNZ, BIN file Previously Published As 83080 Change History Date: 2007-05-22 User Name: 29589 Action: Modify Tech Group Comment: IBIS migration. These document need to be moved to appropriate queue. - Admin Modify of Tech Group to Storage Version: 0 Date: 2005-11-21 User Name: 97961 Action: Approved Comment: - Converted to STM formatting for better readability - Applied trademarking - Made simple sentence/grammatical corrections - Changed title to reflect the problem statement better Attachments This solution has no attachment |
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