Bug#608532: linux-2.6: very low I/O performance when vm's virtual disk placed on btrfs partition

Package: linux-2.6
Version: 2.6.32-29

While I was running a qemu-kvm virtual machine, I placed the virtual
disk on one of my btrfs partition and it results in very low I/O
performance. Comparing with an Ext3/4 host partition, it slows several
times.

The test I ran was installing Squeeze using d-i beta2 netinst ISO
image, using expert installation mode:

1. The one using btrfs got nearly stopped at approximately 33% (it's
the time to start installing base system, i.e. installing
apt/aptitude). It takes about 1 hour to go forward to 50%, with my
hard disk making a lot of noise, and finally I shut down the virtual
machine.

2. The other one using ext4, which I tried to compare the performance,
can finish the installation in ~45 minutes.

The two partition are exactly the same hard disk, actually I formatted
the previous btrfs partition to ext4 when I ran the test.

--

-- 
Regards,
Aron Xu

Bug#608532: marked as done (linux-2.6: very low I/O performance when vm's virtual disk placed on btrfs partition)

Your message dated Sat, 1 Jan 2011 18:31:35 +0100
with message-id <20110101173135.GB27075 <at> wavehammer.waldi.eu.org>
and subject line Re: Bug#608532: linux-2.6: very low I/O performance when vm's virtual disk placed on
btrfs partition
has caused the Debian Bug report #608532,
regarding linux-2.6: very low I/O performance when vm's virtual disk placed on btrfs partition
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner <at> bugs.debian.org
immediately.)

--

-- 
608532: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=608532
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From: Aron Xu <happyaron.xu <at> gmail.com>
Subject: linux-2.6: very low I/O performance when vm's virtual disk placed on btrfs partition
Date: 2011-01-01 04:02:23 GMT

Processed: forcibly merging 602254 608538

Processing commands for control <at> bugs.debian.org:

> forcemerge 602254 608538
Bug#602254: initramfs-tools: [lib]crc32c* modules handling
Bug#608538: btrfs root installation results in initramfs busybox prompt
Forcibly Merged 602254 608538.

> thanks
Stopping processing here.

Please contact me if you need assistance.
--

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602254: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602254
608538: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=608538
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Contact owner <at> bugs.debian.org with problems

Processed: severity of 602254 is important

Processing commands for control <at> bugs.debian.org:

> severity 602254 important
Bug #602254 [initramfs-tools] initramfs-tools: [lib]crc32c* modules handling
Bug #608538 [initramfs-tools] btrfs root installation results in initramfs busybox prompt
Severity set to 'important' from 'normal'

Severity set to 'important' from 'normal'

> thanks
Stopping processing here.

Please contact me if you need assistance.
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Bug#548259: marked as done (base: PowerBook G3 Pismo intermittently fails to sleep)

Your message dated Sun, 2 Jan 2011 00:52:32 +0100
with message-id <20110101235232.GD2526 <at> galadriel.inutil.org>
and subject line Re: base: PowerBook G3 Pismo intermittently fails to sleep
has caused the Debian Bug report #548259,
regarding base: PowerBook G3 Pismo intermittently fails to sleep
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner <at> bugs.debian.org
immediately.)

--

-- 
548259: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=548259
Debian Bug Tracking System
Contact owner <at> bugs.debian.org with problems

Package: base

Bug#607495: [Fwd: Re: Bug#607495: linux-image-2.6.32-5-amd64: kernel freeze]

Oops! Sorry - I forgot to CC Debian bugs.

Philip

From: Philip Ashmore <contact <at> philipashmore.com>
Subject: Re: Bug#607495: linux-image-2.6.32-5-amd64: kernel freeze
Date: 2010-12-27 14:01:06 GMT

Timo Juhani Lindfors wrote:
> Sorry but I was only trying this out since if I had managed to
> reproduce it under xen I could do something about it 

I noticed that running the program on my machine froze my machine.

That's why I wrote the bug report ;)

Thanks for getting it working on your machine, but I already know it's a
stack overflow.

I'm just concerned that someone else may accidentally or deliberately
write a program that can freeze a machine when executing without
elevated privileges.

It's good to hear that at least with Xen, they can't.

Bug#584784: [34-longterm 156/260] MIPS: Set io_map_base for several PCI bridges lacking it

From: Ben Hutchings <ben <at> decadent.org.uk>

commit 8faf2e6c201d95b780cd3b4674b7a55ede6dcbbb upstream.

Several MIPS platforms don't set pci_controller::io_map_base for their
PCI bridges.  This results in a panic in pci_iomap().  (The panic is
conditional on CONFIG_PCI_DOMAINS, but that is now enabled for all PCI
MIPS systems.)

Signed-off-by: Ben Hutchings <ben <at> decadent.org.uk>
Cc: linux-mips <at> linux-mips.org
Cc: Martin Michlmayr <tbm <at> cyrius.com>
Cc: Aurelien Jarno <aurelien <at> aurel32.net>
Cc: 584784 <at> bugs.debian.org
Patchwork: https://patchwork.linux-mips.org/patch/1377/
Signed-off-by: Ralf Baechle <ralf <at> linux-mips.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker <at> windriver.com>
---
 arch/mips/mti-malta/malta-pci.c      |    2 ++
 arch/mips/nxp/pnx8550/common/pci.c   |    1 +
 arch/mips/nxp/pnx8550/common/setup.c |    2 +-
 arch/mips/pci/ops-pmcmsp.c           |    1 +
 arch/mips/pci/pci-yosemite.c         |    1 +
 5 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/mips/mti-malta/malta-pci.c b/arch/mips/mti-malta/malta-pci.c
index 2fbfa1a..bf80921 100644
--- a/arch/mips/mti-malta/malta-pci.c
+++ b/arch/mips/mti-malta/malta-pci.c
 <at>  <at>  -247,6 +247,8  <at>  <at>  void __init mips_pcibios_init(void)

Bug#598504: linux-kbuild: And now that we have linux-kbuild 2.6.36 kernel has moved to 2.6.37-rc

Package: linux-kbuild-2.6.36
Version: 2.6.36-1~experimental.1
Severity: normal
File: linux-kbuild

linux-kbuild version still lags behind kernel version.

Any progress on docs saying how to update it?

-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (910, 'testing'), (900, 'stable'), (500, 'unstable'), (200, 'experimental'), (111, 'oldstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.36-rc6-r600fence-smbinit-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages linux-kbuild-2.6.36 depends on:
ii  libc6                         2.11.2-7   Embedded GNU C Library: Shared lib

linux-kbuild-2.6.36 recommends no packages.

linux-kbuild-2.6.36 suggests no packages.

-- no debconf information

Bug#608250: To Ben Hutchings

On Wed, 2010-12-29 at 14:51 +0000, Ben Hutchings wrote: 
> On Wed, 2010-12-29 at 15:13 +0100, Timothée GROS wrote:
> > Even in dom0 ? 
> 
> Yes - dom0 has access to most physical devices but *not* physical CPUs.
> 
> > How could i control my CPU speed then ?
> 
> That would have to be done in the Xen hypervisor, not the dom0 kernel.

Correct. I'm not that familiar with power-management under Xen but a
good reference appears to be http://wiki.xen.org/xenwiki/xenpm

(there is a configuration option where a unique dom0 VCPU is pinned to
each PCPU in a strict 1-1 mapping which allows regular Linux power
management to be used, I don't know how well supported this is though.
Normally the hypervisor based stuff would be recommended AFAIK)

Ian.

--

-- 
Ian Campbell

Badges?  We don't need no stinking badges.

Bug#608684: linux-2.6: [INTL:sk] Slovak po-debconf translation

Package: linux-2.6
Severity: wishlist
Tags: l10n patch
Version: 2.6.32-29

sk.po attached

regards
Slavko

--

-- 
Slavko
http://slavino.sk