It's clear that under 2.4, the kernel imposes a limit of 2TB as the
maximum file size and that some portion of the kernels before 2.4 had a
limit of 2GB.
However, it's not clear to me when the file size limit was increased, or
what the maximum file system sizes under 2.0, 2.2 and 2.4 are. I realize
that both of these values are also contingent on the filesystem used, but
I'm wondering about what limits the kernel itself imposes.
I'm also a bit unclear as to where the 2GB limit in kernels < 2.4 comes
from. It appears to be a kernel imposed limit, but there also seems to be
a lot conflicting information out there, blaming the problem on
EXT2. However, from what I can tell, 2.0.39, 2.2.19 and 2.4.5 all use the
same version (0.5b-95/08/09) of ext2-- either that or EXT2FS_VERSION and
EXT2FS_DATE in .../include/linux/ext2_fs.h simply haven't been updated.
Any clarification would be appreciated.
--- Derek Vadala, firstname.lastname@example.org, http://www.cynicism.com/~derek
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