[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Brad Figg]

** Tags added: cscc

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

** Changed in: linux (Ubuntu Xenial)
 Assignee: Joseph Salisbury (jsalisbury) => (unassigned)

** Changed in: linux (Ubuntu)
 Assignee: Joseph Salisbury (jsalisbury) => (unassigned)

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu Xenial)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu)
   Status: Confirmed => In Progress

** Changed in: linux (Ubuntu Xenial)
   Status: Confirmed => In Progress

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

I pinged the upstream patch author regarding this regression.  I'm just
awaiting some feedback:

https://lkml.org/lkml/2016/5/6/290

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

Yes, your test kernel fixes the bug.  I ran a test before installing it,
and the bug happened rapidly at the start of the benchmark test on the
Samsung HD103UJ drive.  Then I installed your reverted kernel, rebooted
and ran six benchmark tests without any failures.  Previously, it has
always failed on the first or second benchmark test if it was ever going
to fail.

I noticed that the benchmark results for the read speed of the drive are
a little lower with the patch reverted, down from about 103 Mbytes/s to
about 97 Mbytes/s.  The write speeds seem unaffected at about 100
Mbyte/s.  So it looks like whatever the reverted code is doing is
producing a worthwhile read speed increase.

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

I built a Xenial test kernel with a revert of commit 64d513ac31.  The
test kernel can be downloaded from:

http://kernel.ubuntu.com/~jsalisbury/lp1561830/

Can you test this kernel and see if it resolves this bug?

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Xenial)
   Status: New => Confirmed

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

** Tags added: performing-bisect

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

I have now finished bisecting the mainline kernel, and this is the
commit that causes this problem:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=64d513ac31bd02a3c9b69ef0f36c196f9a9d

commit 64d513ac31bd02a3c9b69ef0f36c196f9a9d
Author: Christoph Hellwig 
Date:   Thu Oct 8 09:28:04 2015 +0100

scsi: use host wide tags by default

This patch changes the !blk-mq path to the same defaults as the blk-mq
I/O path by always enabling block tagging, and always using host wide
tags.  We've had blk-mq available for a few releases so bugs with
this mode should have been ironed out, and this ensures we get better
coverage of over tagging setup over different configs.

Signed-off-by: Christoph Hellwig 
Acked-by: Jens Axboe 
Reviewed-by: Hannes Reinecke 
Signed-off-by: James Bottomley 

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

I had tried a few more mainline kernels earlier today, including
4.4-rc1, before I saw your post.  The results:

  mainline-4.3.1-40301  OK
  mainline-4.3.6-40306  OK
  mainline-4.4.0-040400rc1  Fails

So it is looking like the problem was introduced in the transition from
the last 4.3 kernel to the first 4.4 ones.  Is it possible to do a git
bisect on that somehow?

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

Can you see if the upstream 4.4-rc1 has the bug?  It can be downloaded
from:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc1+cod1-wily/

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Title:
  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

I have done more testing to narrow down where this bug first appeared in
the kernels.  I have been using my 16.04 install on the Seagate
ST31000528AS drive, and installing earlier Ubuntu kernels on it.  The
Drives tool is being used to run a write benchmark on the swap partition
on the Samsung HD103UJ drive.  The Ubuntu 4.3.0-7.18 kernel is the last
one that works.  The 4.4.0-1.15 kernel has the bug and fails during the
write benchmark.  I also tried the latest kernel I could find, mainline
4.6.0-40600rc2, and that failed also.

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

It looks like I spoke too soon - I have now had two failures with the
mainline 4.5.0 kernel booted from the Samsung HD103UJ drive.  The first
of these booted normally, but died when I tried an apt-get update.  The
second failed during boot, as most have in the past.  So it seems that
the bug is a bit less likely to occur with the mainline 4.5.0 kernel,
but it is still there.  So I ran another test booting from the Seagate
ST31000528AS drive using the mainline 4.5.0 kernel, then used the Ubuntu
Disks tool to run a write benchmark test on the now unused swap
partition (/dev/sda7) on the Samsung HD103UJ drive.  After a few
seconds, the bug occurred.  See the attached kern.log file.  The error
messages are pretty much the same as usual for this bug.

** Attachment added: "kern.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1561830/+attachment/4622463/+files/kern.log

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

After quite a bit of messing around, I found a way to test kernels on
16.04 beta properly.  I installed my HightPoint Rocket 622A eSATA card
and plugged the Samsung HD103UJ drive into it using a long eSATA to SATA
cable.  That allowed me to boot from my 16.04 daily DVD and do an
install to the HD103UJ without any problems.  I did an apt-get upgrade
and got the latest kernel (4.4.0-16-generic), and also installed the
mainline kernels 4.4.0-040400-generic and 4.5.0-040500-generic.  Then I
checked the other drive installed on the box (Seagate ST31000528AS, used
for testing Windows 10) and found that its 200 Gibyte NTFS data
partition was almost empty, so I resized it and created a tiny EXT2
partition for Grub2, a 50 Gibyte EXT4 partition for intalling to, and a
10 Gibyte swap partition, all at the end of that drive.  Then I rebooted
to the 16.04 beta DVD and installed to the Seagate drive.  Then I
rebooted to the install on the Samsung drive and ran update-grub, to get
the install on the Seagate drive bootable from the Grub on the Samsung
drive.  Then I booted using the Samsung drive and selected the new 16.04
beta install on the Seagate drive to boot.  It did, to my surprise, as
the Seagate drive was on the motherboard nForce 430 SATA controller.  So
I then mounted the Samsung drive from the booted Seagate install, and
tried the test dd commands, and they also all worked with no errors.

So the first conclusion I have come to is that the bug seems to only be
triggered by the Samsung HD103UJ drive when it is on a motherboard
nForce 430 SATA port.  It does not happen when that drive is on the
Rocket 622A's Marvell SATA port.  And the bug also does not happen when
using the Seagate ST31000528AS drive on a motherboard nForce 430 SATA
port.  It seems to require that particular drive on that particular SATA
controller, and using the standard 16.04 beta kernels, for the bug to
occur.

To prevent problems with the swapper using the swap partition on the
Samsung HD103UJ drive, I edited fstab on both 16.04 installs to use the
new swap partition on the Seagate ST31000528AS drive only.

The next test was to shut down and move the Samsung HD103UJ to its
motherboard nForce 430 SATA port, then reboot using the Grub on that
drive to run the install on the Seagate ST31000528AS drive.  Again, the
boot worked, which I expected as there should be little or no writing to
the Samsung drive during that boot process.  I mounted the Samsung drive
16.04 install partition from the Seagate install, and ran the test dd
commands.  I was again surprised that they worked without errors - I
would have expected that a boot of the 16.04 beta standard kernels from
that drive would work the same as a boot of the 16.04 standard kernel
from my install DVD, and would fail when writing to the Samsung HD103UJ
drive when it is on the motherboard nForce 430 SATA port.

The next test was to reboot to the 16.04 beta partition on the Samsung
HD103UJ drive.  As expected, that boot failed badly, and I had to use
the PC's reset button to restart it, after which I rebooted to the 16.04
beta install on the Seagate ST31000528AS drive again and used that
install to run fsck to repair the 16.04 beta install partition on the
Samsung HD103UJ drive.   The fsck check showed two errors that needed
fixing, where the number of blocks and number of inodes were both wrong.
Once fsck had fixed the partition, I mounted it and looked at the
kern.log file from the bad boot.  It looked normal up to a certain
point, after which it was corrupt - I think it had a block full of
zeroes.  So it looks like as soon as the bug hits, no more successful
log writes occur, which makes it difficult to debug.

I do have a serial port on this motherboard, so I looked to see if I
could use that to get debug information during a bad boot, but it turned
out that I do not have the necessary serial cross-over cable to plug the
motherboard's serial port into any of my other PCs' serial ports.  Last
time I needed a cross-over cable, I must have borrowed one from work,
and unfortunately that is no longer possible.

The next test I ran was to boot the Samsung HD103UJ install on the
nForce 430 port, but using Grub to select the mainline
4.4.0-040400-generic kernel.  That also failed badly in exactly the sam
manner, so I rebooted and repaired the partition again, ready for the
final test.

For the last test, I rebooted to the Samsung HD103UJ install on the
nForce 430 port using the mainline 4.5.0-040500-generic kernel, and it
booted without errors.

So it looks like whatever bug is causing this problem has already been
fixed in the upstream 4.5.0 kernels.  However, if 16.04 is going to be
released using 4.4.0 kernels, I hope the fix for this bug can be
backported before 16.04 is released.  Are there any more tests I should
do to help with this?  Is there any more information I can provide?

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

I think the best way to test the mainline kernel, would be to re-install
15.10 and then test it.  That will also allow testing of prior 16.04
kernels, so we can perform a kernel bisect.

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

I would be happy to try a mainline kernel, but I am getting this problem
when trying to install Ubuntu 16.04 daily from a live install DVD.  So
is there any way to get a mainline kernel into the live DVD, so I can
run it from there?  Alternatively, I can reinstall Ubuntu 15.10 and try
it there, if that would work.  I would also need to try a kernel that
did have the problem with Ubuntu 15.10, to properly verify the 4.5
kernel fixed it, so what kernel would I need to try for that?

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Joseph Salisbury]

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.5 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5-wily/

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Tags added: kernel-da-key

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

apport-collect got an error when running dpkg-query on the linux
package, presumably due to this being a live DVD boot.  Here is the
output of "uname -a":

Linux ubuntu 4.4.0-15-generic #31-Ubuntu SMP Fri Mar 18 19:08:31 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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  Hard disk writes fail in 16.04 daily on nForce 430

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

apport information

** Tags added: apport-collected xenial

** Description changed:

  I have an old PC I use for testing new operating systems.  It has
  previously had Ubuntu 15.10 installed and working.  The motherboard is
  an Asus M2NPV-VM, with Nvidia nForce 430 chipset and Nvidia GeForce 6150
  GPU.  I have installed an Nvidia GT220 card to use for more modern video
  support.
  
  When I attempt to install Ubuntu 16.04 beta (daily xenial-desktop-
  amd64.iso file downloaded 24/03/2016  18:17), it starts to write to the
  hard disk (Samsung HD103UJ), and after a short time the install got lots
  of disk write errors in kern.log.  After the errors, the disk was unable
  to be read either, with "fdisk -l /dev/sda" failing to read a sector,
  where it had worked before starting the install.  Unplugging the SATA
  cable to the drive and plugging it in again made the drive work again
  (on /dev/sdc), but another attempt to install failed with the same write
  errors.
  
  I noticed that the log had swap write errors also, so I rebooted the
  install DVD again, and this time did a "swapoff -a" command before
  attempting to install, but got the same errors again.  So I found my
  Ubuntu 15.10 install DVD and tried a new install from that, which worked
  just fine.
  
  On rebooting with my 16.04 daily DVD, I again did "swapoff -a" so that
  the DVD based system would run normally, then tried mounting the EXT4
  system partition I had just installed using the 15.10 install DVD.  That
  worked, so I tried dd commands to do test writes to that partition.  The
  following commands worked:
  
dd if=/dev/zero of=/mnt/sda8/tmp/output bs=8k count=10k
dd if=/dev/zero of=/mnt/sda8/tmp/output bs=8k count=100k
  
  but when I did this command:
  
dd if=/dev/zero of=/mnt/sda8/tmp/output bs=8k count=1000k
  
  after a while errors started appearing in kern.log, just as with the
  attempts to install 16.04.
  
  It appears that with sustained write activity, the errors will start and
  then the drive will become unusable until it is unplugged and plugged in
  again.
  
  I have attached the kern.log and syslog files from the 15.10 install
  that worked, and the 16.04 install attempt that failed.  The first error
  message appears to be this:
  
  ata3: EH in SWNCQ mode,QC:qc_active 0x1FFF sactive 0x1FFF
  ata3: SWNCQ:qc_active 0x1 defer_bits 0x1FFE last_issue_tag 0x0
  dhfis 0x1 dmafis 0x0 sdbfis 0x0
  
- which leads me to suspect a problem with the handling of the SATA
- controller's interrupts.
+ which leads me to suspect a problem with the handling of the SATA 
controller's interrupts.
+ --- 
+ ApportVersion: 2.20-0ubuntu3
+ Architecture: amd64
+ AudioDevicesInUse:
+  USERPID ACCESS COMMAND
+  /dev/snd/controlC0:  ubuntu 2233 F pulseaudio
+  /dev/snd/controlC1:  ubuntu 2233 F pulseaudio
+ CasperVersion: 1.368
+ DistroRelease: Ubuntu 16.04
+ IwConfig:
+  enp0s20   no wireless extensions.
+  
+  lono wireless extensions.
+  
+  enp2s9no wireless extensions.
+ LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
+ Lsusb:
+  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+  Bus 002 Device 002: ID 0458:0118 KYE Systems Corp. (Mouse Systems) 
+  Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
+ MachineType: System manufacturer System Product Name
+ Package: linux (not installed)
+ ProcEnviron:
+  TERM=xterm-256color
+  PATH=(custom, no user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
+ ProcFB: 0 nouveaufb
+ ProcKernelCmdLine: file=/cdrom/preseed/hostname.seed boot=casper 
initrd=/casper/initrd.lz quiet splash ---
+ ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
+ PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
+ RelatedPackageVersions:
+  linux-restricted-modules-4.4.0-15-generic N/A
+  linux-backports-modules-4.4.0-15-generic  N/A
+  linux-firmware1.157
+ RfKill:
+  
+ Tags:  xenial
+ Uname: Linux 4.4.0-15-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups:
+  
+ _MarkForUpload: True
+ dmi.bios.date: 08/07/2008
+ dmi.bios.vendor: Phoenix Technologies, LTD
+ dmi.bios.version: ASUS M2NPV-VM ACPI BIOS Revision 1401
+ dmi.board.name: M2NPV-VM
+ dmi.board.vendor: ASUSTek Computer INC.
+ dmi.board.version: 1.xx
+ dmi.chassis.asset.tag: 123456789000
+ dmi.chassis.type: 3
+ dmi.chassis.vendor: Chassis Manufacture
+ dmi.chassis.version: Chassis Version
+ dmi.modalias: 
dmi:bvnPhoenixTechnologies,LTD:bvrASUSM2NPV-VMACPIBIOSRevision1401:bd08/07/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTekComputerINC.:rnM2NPV-VM:rvr1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
+ dmi.product.name: System Product Name
+ dmi.product.version: System Version
+ dmi.sys.vendor: System manufacturer

** Attachment added: "AlsaInfo.txt"
   

[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Stephen Worthington]

** Package changed: ubuntu => linux (Ubuntu)

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[Bug 1561830] Re: Hard disk writes fail in 16.04 daily on nForce 430

[Ubuntu Foundations Team Bug Bot]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.  It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general.  It is important that bug reports be filed about source
packages so that people interested in the package can find the bugs
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https://bugs.launchpad.net/bugs/1561830

Title:
  Hard disk writes fail in 16.04 daily on nForce 430

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