From mboxrd@z Thu Jan 1 00:00:00 1970 From: Antoine Martin Subject: Re: raw disks no longer work in latest kvm (kvm-88 was fine) Date: Sat, 22 May 2010 17:44:25 +0700 Message-ID: <4BF7B589.1070808@nagafix.co.uk> References: <4B92BF97.4040001@nagafix.co.uk> <4B92C90B.4030807@msgid.tls.msk.ru> <4B932829.8090503@nagafix.co.uk> <4B9372B6.3050408@msgid.tls.msk.ru> <20100307100022.GA23201@infradead.org> <4B93A624.8010707@nagafix.co.uk> <4B93AF8A.3070805@nagafix.co.uk> <4B93C2F9.7030904@msgid.tls.msk.ru> <4B93DE3F.4090103@nagafix.co.uk> <4B93DFF0.5050905@redhat.com> <20100307172151.GA24859@infradead.org> <4B93E29E.6090609@redhat.com> <4B93E9EE.6020701@nagafix.co.uk> <4B93F4A4.9050003@redhat.com> <4B93F96E.30508@nagafix.co.uk> <4B93FA18.2090808@redhat.com> <4B93FAD8.9010207@nagafix.co.uk> <4B93FBC1.3000209@redhat.com> <4B93FD94.7060508@nagafix.co.uk> <4B93FFEE.4080007@redhat.com> <4B9B6008.4090902@nagafix.co.uk> <4BBE51F4.6070904@nagafix.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Christoph Hellwig , kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from mamba.nagafix.co.uk ([194.145.196.68]:37103 "EHLO mail.nagafix.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754114Ab0EVKod (ORCPT ); Sat, 22 May 2010 06:44:33 -0400 In-Reply-To: <4BBE51F4.6070904@nagafix.co.uk> Sender: kvm-owner@vger.kernel.org List-ID: Bump. Now that qemu is less likely to eat my data, " *[Qemu-devel] [PATCH 4/8] block: fix sector comparism in*" http://marc.info/?l=qemu-devel&m=127436114712437 I thought I would try using the raw 1.5TB partition again with KVM, still no go. I am still having to use: #undef CONFIG_PREADV Host and guest kernel version is 2.6.34, headers 2.6.33, glibc 2.10.1-r1 qemu-kvm 0.12.4 + patch above. Who do I need to bug? glibc? kvm? Thanks Antoine On 04/09/2010 05:00 AM, Antoine Martin wrote: > > Antoine Martin wrote: > >> On 03/08/2010 02:35 AM, Avi Kivity wrote: >> >>> On 03/07/2010 09:25 PM, Antoine Martin wrote: >>> >>>> On 03/08/2010 02:17 AM, Avi Kivity wrote: >>>> >>>>> On 03/07/2010 09:13 PM, Antoine Martin wrote: >>>>> >>>>>>> What version of glibc do you have installed? >>>>>>> >>>>>> Latest stable: >>>>>> sys-devel/gcc-4.3.4 >>>>>> sys-libs/glibc-2.10.1-r1 >>>>>> >>>>>> >>>>> $ git show glibc-2.10~108 | head >>>>> commit e109c6124fe121618e42ba882e2a0af6e97b8efc >>>>> Author: Ulrich Drepper >>>>> Date: Fri Apr 3 19:57:16 2009 +0000 >>>>> >>>>> * misc/Makefile (routines): Add preadv, preadv64, pwritev, >>>>> pwritev64. >>>>> >>>>> * misc/Versions: Export preadv, preadv64, pwritev, pwritev64 >>>>> for >>>>> GLIBC_2.10. >>>>> * misc/sys/uio.h: Declare preadv, preadv64, pwritev, pwritev64. >>>>> * sysdeps/unix/sysv/linux/kernel-features.h: Add entries for >>>>> preadv >>>>> >>>>> You might get away with rebuilding glibc against the 2.6.33 headers. >>>>> >>>>> >>>> The latest kernel headers available in gentoo (and they're masked >>>> unstable): >>>> sys-kernel/linux-headers-2.6.32 >>>> >>>> So I think I will just keep using Christoph's patch until .33 hits >>>> portage. >>>> Unless there's any reason not to? I would rather keep my system "clean". >>>> I can try it though, if that helps you clear things up? >>>> >>> preadv/pwritev was actually introduced in 2.6.30. Perhaps you last >>> build glibc before that? If so, a rebuild may be all that's necessary. >>> >>> >> To be certain, I've rebuilt qemu-kvm against: >> linux-headers-2.6.33 + glibc-2.10.1-r1 (both freshly built) >> And still no go! >> I'm still having to use the patch which disables preadv unconditionally... >> > Better late than never, here's the relevant part of the strace (for the > unpatched case where it fails): > > stat("./fs", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 41), ...}) = 0 > open("./fs", O_RDWR|O_DIRECT|O_CLOEXEC) = 12 > > lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31266] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31266] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31266] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31266] lseek(12, 0, SEEK_SET) = 0 > [pid 31266] read(12, > "\240\246E\32\r\21\367c\212\316Xn\177e'\310}\234\1\273`\371\266\247\r\1nj\332\32\221\26"..., > 512) = 512 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, "iQ\35 > \271O\203vj\ve[Ni}\355\263\272\4#yMo\266.\341\21\340Y5\204\20"..., 4096, > 1321851805696) = 4096 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31273] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31271] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31331] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31294] pread(12, "iQ\35 > \271O\203vj\ve[Ni}\355\263\272\4#yMo\266.\341\21\340Y5\204\20"..., 512, > 1321851805696) = 512 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31298] pread(12, > "\240\246E\32\r\21\367c\212\316Xn\177e'\310}\234\1\273`\371\266\247\r\1nj\332\32\221\26"..., > 512, 0) = 512 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31307] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31295] pread(12, > "\240\246E\32\r\21\367c\212\316Xn\177e'\310}\234\1\273`\371\266\247\r\1nj\332\32\221\26"..., > 2048, 0) = 2048 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31330] pread(12, > "=\206\5\355\35\2\2610\33\271\355\300qm\2174K\366\340ng\23\311\210Gg\220m\27\33E\254"..., > 512, 1321851748352) = 512 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31331] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31294] pread(12, > "\240\246E\32\r\21\367c\212\316Xn\177e'\310}\234\1\273`\371\266\247\r\1nj\332\32\221\26"..., > 512, 0) = 512 > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > [pid 31298] pread(12, > [pid 31267] lseek(12, 0, SEEK_END) = 1321851815424 > > > > Antoine > > >> Antoine >> -- >> To unsubscribe from this list: send the line "unsubscribe kvm" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >