VDDK write failure

[Sachin201110141]

Hi,

VDDK write over SAN mode is failing with error "Failed to write to Disk One of the parameters supplied is invalid". But the same is working with NBD transport mode.

Observed following errors in hostd log:

[2011-07-14 12:08:09.720 F6421900 trivia 'VersionValidator'] ALLOWED: Host is not licensing-restricted

[2011-07-14 12:08:09.733 F6421900 info 'App'] AdapterServer caught exception: 5d8ace80

The ESX server has valid license.

Environment:

ESX: 4.1 build-260247

VDDK 1.2.1

Please suggest the cause for the error.

Thanks

Sachin

[Dattu]

Hi Sachin,

The following could be one of the issues as mentioned in the release notes.

• Read/Write operations work with Hot Add transport in Windows Server 2008 Proxy

  Reading or writing to a volume after it was opened using VixDiskLib_Open() sometimes did not work as expected when running on a Windows Server 2008 proxy using Hot Add transport mode.      Reading and writing to such volumes now performs as expected. This issue still exists for SAN transport mode.      To resolve this issue in SAN transport mode, set the disks online and set the SAN transport mode policy to OnlineAll. To make disks writable, clear the readonly flag. This flag can be cleared in a variety of ways.      In Windows Server 2008, you could use the diskpart utility to clear the flag.