file read failed:Status 13 on all VMs using SAN transfer type - " VixDiskLib: No transport modes availble to access disks"

Article:TECH165311  |  Created: 2011-07-22  |  Updated: 2012-07-28  |  Article URL http://www.symantec.com/docs/TECH165311
Article Type
Technical Solution


Environment

Problem



file read failed:Status 13 on all VMs using SAN transfer type - " VixDiskLib: No transport modes availble to access disks"


Error



- bpbkar ends with status 6: 1:46:16.606 PM: [2628.3088] <2> WinMain: DAT - lpCmdLine = '-r 1209600 -ru root -dt 0 -to 0 -clnt PHENTW71 -class vmdisplayname_san_localdisk -sched Full -st FULL -bpstart_to 300 -bpend_to 300 -read_to 300 -blks_per_buffer 512 -use_otm -fso -ifr -pid 6040 -mediasvr phentw25.chi.chicorp -bt 1308084376 -t 0 -b PHENTW71_1308084376 -kl 28 -fi -S phentw25.chi.chicorp -fim NONE -ct 29 -shm ' ... 1:46:23.434 PM: [2628.3088] <2> tar_base::V_vTarMsgW: INF - VxMS error - severity 2. 1:46:23.434 PM: [2628.3088] <4> tar_base::V_vTarMsgW: INF - tar message received from vxms_error_handler 1:46:23.434 PM: [2628.3088] <2> tar_base::V_vTarMsgW: INF - VxMS Error message 1 = Error opening snapshot disk(s) using given transport mode(s) message 2 = Error opening snapshot disk(s) using given transport mode(s) ... 1:46:23.450 PM: [2628.3088] <2> tar_base::V_vTarMsgW: INF - EXIT STATUS 6: the backup failed to back up the requested files - VxMS reports SAN fails pre-flight check, and then no transport modes available: 06/14/2011 13:46:23.0403 : g_vdInterfaceLogger:.\libvix.cpp:1683 : diskLibPlugin: [2011-06-14 13:46:23.403 03088 trivia 'transport'] Transport mode san failed pre-flight check. Ignoring. 06/14/2011 13:46:23.0403 : g_vdInterfaceLogger:.\libvix.cpp:1683 : diskLibPlugin: [2011-06-14 13:46:23.403 03088 trivia 'transport'] Checking transport mode hotadd. ... ... ... 06/14/2011 13:46:23.0434 : g_vdInterfaceLogger:.\libvix.cpp:1683 : diskLibPlugin: [2011-06-14 13:46:23.434 03088 trivia 'transport'] Narrowing down applicable transport modes. 06/14/2011 13:46:23.0434 : g_vdInterfaceLogger:.\libvix.cpp:1683 : diskLibPlugin: [2011-06-14 13:46:23.434 03088 trivia 'transport'] Disregarding transport mode san. 06/14/2011 13:46:23.0434 : g_vdInterfaceLogger:.\libvix.cpp:1683 : VixDiskLib: No transport modes availble to access disks.


Environment



9 ESXi 4.1.0, 381591 servers 4.1 vCenter Master = 2008R2 iSCSI connections to the datastores.... VMware Backup Host = master/media server Host Name: PHENTW25 OS Name: Microsoft Windows Server 2008 R2 Standard OS Version: 6.1.7601 Service Pack 1 Build 7601 System Manufacturer: VMware, Inc. System Type: x64-based PC NBSU - http://rosspt.veritas.com/evidence/ros/86/414-800-586/2011-06-14/PHENTW25_master_20110614_102517


Cause



VDDK release notes state the limitation on using SAN with a Physical Backup Host: http://www.vmware.com/support/developer/vddk/vddk12_api_programming.pdf - P. 43: Virtual Disk Transport Methods ... ... SAN ... ... "SAN mode requires applications to run on a physical machine (a backup server, for example) with access to FibreChannel or iSCSI SAN containing the virtual disks to be accessed."


Solution



Configure a Physical VMware Backup Host to use iSCSI access to the datastores.
 



Article URL http://www.symantec.com/docs/TECH165311


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