On Wed, Feb 07, 2024 at 02:26:53PM -0800, Luis Chamberlain wrote: > I'd like to review the max theoretical XFS filesystem size and > if block size used may affect this. At first I thought that the limit which > seems to be documented on a few pages online of 16 EiB might reflect the > current limitations [0], however I suspect its an artifact of both > BLKGETSIZE64 limitation. There might be others so I welcome your feedback > on other things as well. Linux is limited to 8EiB as loff_t is signed ... I don't want to introduce lllseek() to expand beyond 8EiB; I have reason to believe that we'll have 128-bit registers in relevant CPUs before we can buy reasonably priced arrays of drives that will reach 8EiB (and want to turn those into a single block device). See my Zettalinux presentation at Plumbers 2022 in Dublin (and that reminds me, I really should do something with zettalinux.org)
