On 03/02/11 20:29, Jim Meyering wrote:
Does anyone know how to determine if a file system (say the one with .)
supports the FIEMAP ioctl, but without compiling/running a C program?
I.e., via perl or python? I've written a tiny C program that works
and a Perl one that is supposed to be
Pádraig Brady wrote:
On 31/01/11 21:46, Jim Meyering wrote:
Now that we have can read sparse files efficiently,
what if I want to copy a 20PiB sparse file, and yet I want to
be sure that it does so efficiently. Few people can afford
to wait around while a normal processor and storage system
On 01/31/2011 03:27 PM, Jim Meyering wrote:
It's orthogonal.
--sparse=always still does the hole-punching, independently
of whether we're copying normally or via the efficient FIEMAP-based
code.
E.g., if you have a sparse file, where one non-sparse chunk
contains all-zero blocks
On 31/01/11 21:46, Jim Meyering wrote:
Now that we have can read sparse files efficiently,
what if I want to copy a 20PiB sparse file, and yet I want to
be sure that it does so efficiently. Few people can afford
to wait around while a normal processor and storage system process
that much raw
