From: Christoph Hellwig <hch@lst.de>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH] block: default to 0 minimal / optiomal I/O size
Date: Fri, 23 Jul 2010 09:35:04 +0200 [thread overview]
Message-ID: <20100723073504.GA28166@lst.de> (raw)
Currently we set them to 512 bytes unless manually specified. Unforuntaly
some brain-dead partitioning tools create unaligned partitions if they
get low enough optiomal I/O size values, so don't report any at all
unless explicitly set.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Index: qemu/block_int.h
===================================================================
--- qemu.orig/block_int.h 2010-07-23 09:26:07.660494681 +0200
+++ qemu/block_int.h 2010-07-23 09:26:20.323494685 +0200
@@ -243,7 +243,7 @@ static inline unsigned int get_physical_
_conf.logical_block_size, 512), \
DEFINE_PROP_UINT16("physical_block_size", _state, \
_conf.physical_block_size, 512), \
- DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 512), \
- DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 512)
+ DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \
+ DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0)
#endif /* BLOCK_INT_H */
next reply other threads:[~2010-07-23 7:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-23 7:35 Christoph Hellwig [this message]
2010-07-23 10:50 ` [Qemu-devel] [PATCH] block: default to 0 minimal / optiomal I/O size Kevin Wolf
2010-07-23 11:30 ` Christoph Hellwig
2010-07-23 11:56 ` Kevin Wolf
2010-07-23 12:09 ` Christoph Hellwig
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