VMware
Virtual Disk Development Kit:

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1 Replies Last post: Nov 3, 2009 8:45 AM by sudarsan  

Writing via SAN posted: Nov 2, 2009 5:32 AM

Click to view scammeresi's profile Lurker
scammeresi
1 posts since
Dec 23, 2008
I'm able to read via LAN and SAN using the VDDK. I'm also able to write via LAN. I cannot write via SAN.

The docs are pretty vague on this (by which I mean non-existent), and there is no example code. It's not clear at all what parameters I would use to open the disk for writing since using the SAN requires a snapshot, but shouldn't a snapshot be readonly? What kind of sense would it make to have a snapshot which can be written?

Is writing via SAN even supported?

Re: Writing via SAN

1. Nov 3, 2009 8:45 AM in response to: scammeresi
Click to view sudarsan's profile Expert
sudarsan
263 posts since
Sep 20, 2006
The backup guide has some example code - we are working on an expanded sample to show some of these capabilities.

To answer your other question, SAN does need a snapshot because of an implementation quirk. Writing via SAN is supported.

Thanks
-Sudarsan

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