[gpfsug-discuss] Metadata block size

[Asgeir Storesund Nilsen]

Hi,

I want to create a file system with 16MB for data blocks and 256k for
metadata blocks.  Under filesystem version 13.01 (3.5.0.0) this worked just
fine, even when upgrading GPFS later.

However, for a filesystem created with version 13.23 (3.5.0.7), if I
specify both data and metadata block sizes, the metadata block size applies
for both.  If I do not specify metadata block size, the data block size
(-B) is used for both.

This has a detrimental impact on our metadataOnly NSDs, as they fill up
pretty quickly.


Are any of you aware of updates / bugs in GPFS that might help explain and
alleviate this issue?  Any hints would be appreciated.

Regards,
Asgeir
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