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From: Christoph Hellwig <hch@infradead.org>
To: Avi Kivity <avi@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Antoine Martin <antoine@nagafix.co.uk>,
	Michael Tokarev <mjt@tls.msk.ru>,
	kvm@vger.kernel.org
Subject: Re: raw disks no longer work in latest kvm (kvm-88 was fine)
Date: Sun, 7 Mar 2010 12:34:06 -0500	[thread overview]
Message-ID: <20100307173406.GA3756@infradead.org> (raw)
In-Reply-To: <4B93E29E.6090609@redhat.com>

On Sun, Mar 07, 2010 at 07:30:06PM +0200, Avi Kivity wrote:
> It may also be that glibc is emulating preadv, incorrectly.

I've done a quick audit of all pathes leading to pread and all seem
to align correctly.  So either a broken glibc emulation or something
else outside the block layer seems likely.

> Antoine, can you check this?  ltrace may help, or run 'strings libc.so |  
> grep pread'.

Or just add an

#undef CONFIG_PREADV

just before the first

#ifdef CONFIG_PREADV

in posix-aio-compat.c and see if that works.


  reply	other threads:[~2010-03-07 17:34 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-06 20:48 raw disks no longer work in latest kvm (kvm-88 was fine) Antoine Martin
2010-03-06 21:28 ` Michael Tokarev
2010-03-07  4:14   ` Antoine Martin
2010-03-07  9:32     ` Michael Tokarev
2010-03-07 10:00       ` Christoph Hellwig
2010-03-07 13:12         ` Antoine Martin
2010-03-07 13:52           ` Antoine Martin
2010-03-07 15:15             ` Michael Tokarev
2010-03-07 17:11               ` Antoine Martin
2010-03-07 17:18                 ` Avi Kivity
2010-03-07 17:21                   ` Christoph Hellwig
2010-03-07 17:30                     ` Avi Kivity
2010-03-07 17:34                       ` Christoph Hellwig [this message]
2010-03-07 18:43                         ` raw disks no longer work in latest kvm (kvm-88 was fine) [SOLVED] Antoine Martin
2010-03-07 18:55                           ` Avi Kivity
2010-03-07 18:01                       ` raw disks no longer work in latest kvm (kvm-88 was fine) Antoine Martin
2010-03-07 18:47                         ` Avi Kivity
2010-03-07 19:07                           ` Antoine Martin
2010-03-07 19:10                             ` Avi Kivity
2010-03-07 19:13                               ` Antoine Martin
2010-03-07 19:17                                 ` Avi Kivity
2010-03-07 19:25                                   ` Antoine Martin
2010-03-07 19:35                                     ` Avi Kivity
2010-03-13  9:51                                       ` Antoine Martin
2010-03-14  7:34                                         ` Avi Kivity
2010-04-08 22:00                                         ` Antoine Martin
2010-05-22 10:44                                           ` Antoine Martin
2010-05-22 11:17                                             ` Michael Tokarev
2010-05-22 11:35                                               ` Antoine Martin
2010-05-23  8:53                                                 ` Antoine Martin
2010-05-23 11:57                                                   ` Avi Kivity
2010-05-23 14:07                                                     ` Antoine Martin
2010-05-23 14:18                                                       ` Avi Kivity
2010-05-23 14:43                                                         ` Antoine Martin
2010-05-23 14:53                                                           ` Antoine Martin
2010-05-23 14:56                                                             ` Avi Kivity
2010-05-23 15:06                                                           ` Antoine Martin
2010-05-23 15:12                                                           ` Avi Kivity
2010-05-23 16:18                                                             ` Antoine Martin
2010-05-23 17:47                                                               ` Stefan Hajnoczi
2010-05-29  9:42                                                                 ` Antoine Martin
2010-05-29  9:55                                                                   ` Stefan Hajnoczi
2010-05-29 10:34                                                                     ` Christoph Hellwig
2010-05-29 11:06                                                                       ` Stefan Hajnoczi
2010-05-29 10:34                                                                   ` Christoph Hellwig
2010-03-07 19:09                           ` Asdo
2010-03-07 19:11                             ` Antoine Martin
2010-03-07 19:12                             ` Avi Kivity
2010-03-07 16:21         ` Avi Kivity
2010-03-08 16:45           ` Anthony Liguori
2010-03-07  9:36 ` Gleb Natapov

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