kernel-packages team mailing list archive

[Ken Pratt <kenpratt@xxxxxxxxxxx>]

btrfs raid10 setups cause the hardware reset to happen very frequently.
I have a eSATA enclosue (SansDigital) that has two eSATA ports and
contains 2 banks of 4 drives. 4 per eSATA port (port multiplier).  I
encounter no problems when using RAID1 with BTRFS across 8 drives.
However, when I use the  btrfs balance start -dconvert=raid10
-mconvert=raid10 to convert the set of 8 drives from a RAID1 to a
RAID10, it all falls apart with SATA hardware resets.  I am guessing
that the btrfs driver sits above all this and that the error is in the
SATA code and not the btrfs code which relies on it.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/986321

Title:
  READ/Write FPDMA QUEUED failures

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  We have a setup of
  1- 3 Sata PCI cards (Syba PCI Express SATA II 4-Port RAID Controller Card SY-PEX40008) 2- connected to 9 backplanes (CFI-B53PM 5 Port Backplane (SiI3726)).
  Exact replica of this configuration http://blog.backblaze.com/2011/07/20/petabytes-on-a-budget-v2-0revealing-more-secrets/.

  We tried Ubuntu Server 12.04/Debian Stable/BSD7/BSD8 with ext4/zfs and all give us such read/write errors.
  ---
  AlsaDevices:
   total 0
   crw-rw---T 1 root audio 116,  1 Apr 20 14:10 seq
   crw-rw---T 1 root audio 116, 33 Apr 20 14:10 timer
  AplayDevices: aplay: device_list:252: no soundcards found...
  ApportVersion: 2.0.1-0ubuntu2
  Architecture: amd64
  ArecordDevices: arecord: device_list:252: no soundcards found...
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=16877cc2-98af-4f72-b1bc-7f1ee98f6fcd
  InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Beta amd64 (20120413)
  IwConfig:
   lo        no wireless extensions.

   eth1      no wireless extensions.

   eth0      no wireless extensions.
  MachineType: Supermicro X8SIL
  NonfreeKernelModules: zfs zcommon znvpair zavl zunicode
  Package: linux (not installed)
  PciMultimedia:

  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=de87ad5f-e76f-4180-a7ce-9b29c9443b9f ro
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/localadmin not ours.
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-23-generic N/A
   linux-backports-modules-3.2.0-23-generic  N/A
   linux-firmware                            1.79
  RfKill:

  SourcePackage: linux
  Tags:  precise precise
  Uname: Linux 3.2.0-23-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

  dmi.bios.date: 05/27/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1.1
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: X8SIL
  dmi.board.vendor: Supermicro
  dmi.board.version: 0123456789
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 24
  dmi.chassis.vendor: Supermicro
  dmi.chassis.version: 0123456789
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.1:bd05/27/2010:svnSupermicro:pnX8SIL:pvr0123456789:rvnSupermicro:rnX8SIL:rvr0123456789:cvnSupermicro:ct24:cvr0123456789:
  dmi.product.name: X8SIL
  dmi.product.version: 0123456789
  dmi.sys.vendor: Supermicro

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/986321/+subscriptions