Comments on: How to change blocksize (file size limit) on VMFS3 filesystem http://www.sysdigg.com/how-to-change-blocksize-file-size-limit-on-vmfs3-filesystem Thu, 09 Feb 2012 19:49:36 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Jake http://www.sysdigg.com/how-to-change-blocksize-file-size-limit-on-vmfs3-filesystem/comment-page-1#comment-483 Jake Wed, 17 Jun 2009 15:35:09 +0000 http://www.sysdigg.com/?p=935#comment-483 This syntax didn't work...at least not for changing the block size for a local partition on an ESX host running ESX 3.5 Update 4. Kept giving me an error (may have simply been a capital "M" instead of lower case in the block size.) This one below worked correctly for me. vmkfstools -C vmfs3 -b 2m -S LocalHDD vmhba0:0:0:3 where -C creates the volume -b sets the block size -S sets the volume label This syntax didn’t work…at least not for changing the block size for a local partition on an ESX host running ESX 3.5 Update 4. Kept giving me an error (may have simply been a capital “M” instead of lower case in the block size.) This one below worked correctly for me.

vmkfstools -C vmfs3 -b 2m -S LocalHDD vmhba0:0:0:3

where

-C creates the volume
-b sets the block size
-S sets the volume label

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