[Lustre-discuss] large ost and fsck
adilger at sun.com
Tue Oct 28 15:14:09 PDT 2008
On Oct 21, 2008 12:00 -0400, Kossey, Robert wrote:
> Can you be more specific about the 8TB limit? Is it correct that this
> is an 8TB base 2 (8796GB base 10) limit?
All filesystem limits are a result of base-2 issues.
> Does this limit apply to the raw device size or formatted Lustre OST
> size? Using RHEL5U1, we have created an OST on a 9.001 TB raw device
> with a formatted size reported from lustre_config of 8584023MB. Is this
> OST OK to use, or would we have receive an error message if it was not OK?
For RHEL5 it is possible that a 9TB filesystem will work (I believe a fix
for this went into 1.6.6). We just haven't finished our testing on it
yet. There is no chance that a >= 8TiB filesystem would work with SLES10
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.
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