On 05/23/2010 05:43 PM, Antoine Martin wrote:
Description of the problem:
A guest tries to mount a large raw partition (1.5TB /dev/sda9 in my
case), this fails with pread enabled, works with it disabled.
Did you mean: preadv?
Yes, here's what makes it work ok (as suggested by Christoph earlier
in the thread) in posix-aio-compat.c:
#undef CONFIG_PREADV
#ifdef CONFIG_PREADV
static int preadv_present = 1;
#else
static int preadv_present = 0;
#endif
When preadv_present=1, does strace -fF show preadv being called?
If so, the kernel's preadv() is broken.
If not, glibc's preadv() emulation is broken.
Does aio=native help?
It does indeed!
That's recommended anyway on raw partitions with cache=off.
--
error compiling committee.c: too many arguments to function
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