[DRBD-user] Update: Definitive answer on >4TB DRBD volumes

Lee Christie Lee at titaninternet.co.uk
Thu Jul 24 11:12:47 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


> > DRBD 8.0.x, 8.2.6:
> >  32bit kernel:
> > 	4 TB hard limit per device
> > 	you can have several of them, but you probably run into some
> >         other limit pretty fast.
> >  64bit kernel:
> > 	4 TB "supported".
> > 	(unsupported theoretically) 16 TB hard limit per device,
> 
> I just tried that myself out of curiosity.
> it works up to "only" 8 TB per device on 64bit kernel.
> anything bigger will oops sooner or later.
> 
> again: maximum 8 TB per device -- or crash is imminent.
> 
> therefore we will restrict drbd-8.2.7 (8.0.13)
> to refuse anything bigger than that.

I might be naive here but surely with a 64bit kernel it should be
possible to go over 8TB and if you cannot then there must be a bug
somewhere ?

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