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Re: svnadmin hotcopy - fails for very large repositories

From: Justin Erenkrantz <justin_at_erenkrantz.com>
Date: 2003-12-06 08:24:52 CET

--On Friday, December 5, 2003 3:28 PM -0500 mark benedetto king
<mbk@lowlatency.com> wrote:

> Right, but it doesn't expose an APR_LARGEFILE flag (analogous to APR_READ).
> Without one, the application can't decide.
>
> apr_file_copy() would probably always use APR_LARGEFILE, if it existed.

FWIW, largefile is a big giant mess that no one wants to implement for APR.

I've submitted several patches to enable it that work on most non brain-dead
OSes. However, the problem with largefile mainly comes from Linux brokenness.

Older versions of the kernel (IIRC, 2.2/2.4) combined with older glibc's
#error out when mixing sendfile and largefile. So, it's been on no one's
priority list to implement. I think 2.6 with current glibc versions will be
the first to allow largefile and sendfile in the same application. -- justin

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Received on Sat Dec 6 08:25:44 2003

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