max blockdevice/filesystem size?

Kenneth D. Merry ken at
Fri Jan 30 05:47:54 PST 2004

On Fri, Jan 30, 2004 at 12:50:26 +0100, Oliver Brandmueller wrote:
> Hi all,
> maybe I'm just blind, then give me a pointer.
> Since the information in the FAQ seems rather outdated, can someone tell 
> me, what the maximum size of a UFS2/ffs filesystem is with FreeBSD 5.2? 
> I'm looking for practical values. Something like: OK, we hit the max 
> size of a SCSI device, so we use some more of them and vinum. How much 
> TB would work in a single FS?

At least for SCSI device size, we can in theory handle a device up to
2^64-1 blocks.  I've actually tested devices close to that limit with a
"fake" ramdisk target.  I'm not sure about filesystem size, someone else
will have to answer that one.

Kenneth Merry
ken at FreeBSD.ORG

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