Hi all,

 confused  about size limits:

I distinctly remember trying to format a ~19 TB disk / LV for use as an MDT, 
with ldiskfs, and failing to do so: the max size for the underlying ext4 is 16 
TB.
Knew that, had ignoed that, but not a problem back then - just adapted the 
logical volume's size.

Now I have a 24T disk, and neither mkfs.lustre nor Lustre itself have show any 
issues with it.
'df -h' does show the 24T, 'df -ih' shows the expected 4G of inodes.
I suppose this MDS has a lot of space for directories and stuff, or for DOM.
But why does it work in the first place? ldiskfs extends beyond all limits 
these days?

Regards,
Thomas

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Thomas Roth
Department: Informationstechnologie
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