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error: the file system on 'datastore1' does not support file this large. please check the file system block size

Posted on 2013-06-29
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Last Modified: 2013-07-15
hi all

     i was trying use vcenter Converter, P to V from a physical linux redhat enterprise server to esxi 5.1, when i try to increase the data storage, it shows below message,


"error: the file system on 'datastore1' does not support file this large. please check the file system block size"

current the data block size of the target datastore is using 1m, is it something to do with the data block size ?  and the physical linux server has 135GB size, i was trying to increase to 230GB, if my target datastore is using 1m, should be ok, as long as it is not more than 250GB, what went wrong ?  if it is something to do with the block size, how do i increase it to 2m or above? Thx
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Question by:piaakit
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Accepted Solution

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Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 39287142
if you are using ESXi 5.1, and a datastore using VMFS-5, and a 1MB Block Size your datastore should support a virtual machine disk size up to 2TB-512bytes.

can you check you are using VMFS-5, and this is not a converted vSphere 4.x server?

to increase the block size from the current size, would require a re-format of the datastore, or change from vmfs-3 to vmfs-5.

check your vmfs version?

Unified 1MB File Block Size. Previous versions of VMFS used 1,2,4 or 8MB file blocks. These larger blocks were needed to create large files (>256GB). These large blocks are no longer needed for large files on VMFS-5. Very large files can now be created on VMFS-5 using 1MB file blocks.

Source
http://blogs.vmware.com/vsphere/2011/07/new-vsphere-50-storage-features-part-1-vmfs-5.html
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Author Comment

by:piaakit
ID: 39288217
its wired, the current esxi5.1 is using VMFS-5 already, but i wont be able to use p to v to increase HD size from 135GB to 200GB, it is related to linux issue ?
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LVL 123
ID: 39288350
was this an upgrade from VMware vSphere 4.x?

when you create a virtual disk using VMware vSphere client, can you allocate a disk larger than 250GB?
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Author Comment

by:piaakit
ID: 39296164
this esxi5.1 is not upgraded from 4.x , from vsphere client i can create disk larger than 250GB, just can not enlarge the large during vcenter convertor when working on P to V
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LVL 123
ID: 39296271
very strange, not seen this error before.
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