Bug#463769: Fails on files (ie disk images)
wakko at animx.eu.org
Sat Apr 12 13:02:23 UTC 2008
martin f krafft wrote:
> also sprach Wakko Warner <wakko at animx.eu.org> [2008.04.11.2318 +0200]:
> > Querying is the only thing I was after. The patch I made makes querying
> > work.
> Wakko, is this querying-specific, and does the patch have no other
I don't think it's query specific due to the way mdadm was written.
What it does is this:
2 places where an open is performed, I added O_LARGEFILE to the flags.
Without this, obviously, files larger than 2gb will not open.
I added a define for _FILE_OFFSET_BITS 64
It's been a while, I don't remember exactly why, but I think that caused
O_LARGEFILE to be included from one of the system libraries.
I add O_LARGEFILE to the flags which is used later in an open statement.
I add an fstat to get the size of the "file" if it is a regular file. That
function only used ioctls to get the size.
Those modifications allowed querying with -E work on regular files.
> Neil, can we integrate this upstream? The patch makes mdadm -E/D
> work on files, not only block devices.
This does not work with -D. -D requires an active MD device to query.
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