apport information

** Tags added: apport-collected trusty uec-images

** Description changed:

  bcache (bcache0 in this sample) ioutil goes to 100% and avgqu-sz also
  gets affected. Bcache slaves don't get affected, but does affect storage
  performance.
  
  See excerpt (bcache0):
  http://pastebin.ubuntu.com/23948463/
  
  * Bcache blocks are running Ceph OSDs.
  * HW is PowerEdge R730xd
  * Kernel version is: 4.4.0-51-generic
  * Ubuntu 14.04.5 LTS
  * bcache-tools 1.0.7-1~14.04.1
  
  Please let me know if you would need further detail.
+ --- 
+ AlsaDevices:
+  total 0
+  crw-rw---- 1 root audio 116,  1 Feb  7 12:45 seq
+  crw-rw---- 1 root audio 116, 33 Feb  7 12:45 timer
+ AplayDevices: Error: [Errno 2] No such file or directory
+ ApportVersion: 2.14.1-0ubuntu3.21
+ Architecture: amd64
+ ArecordDevices: Error: [Errno 2] No such file or directory
+ AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
+ DistroRelease: Ubuntu 14.04
+ IwConfig: Error: [Errno 2] No such file or directory
+ Lsusb:
+  Bus 002 Device 002: ID 8087:8002 Intel Corp. 
+  Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+  Bus 001 Device 003: ID 413c:a001 Dell Computer Corp. Hub
+  Bus 001 Device 002: ID 8087:800a Intel Corp. 
+  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
+ MachineType: Dell Inc. PowerEdge R730xd
+ Package: linux (not installed)
+ PciMultimedia:
+  
+ ProcEnviron:
+  TERM=screen
+  PATH=(custom, no user)
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
+ ProcFB:
+  
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-51-generic 
root=UUID=dc9574d7-cd8b-4db0-af85-db73ea17df65 ro console=tty0 
console=ttyS0,115200n8
+ ProcVersionSignature: Ubuntu 4.4.0-51.72~14.04.1-generic 4.4.30
+ RelatedPackageVersions:
+  linux-restricted-modules-4.4.0-51-generic N/A
+  linux-backports-modules-4.4.0-51-generic  N/A
+  linux-firmware                            1.127.22
+ RfKill: Error: [Errno 2] No such file or directory
+ Tags:  trusty uec-images
+ Uname: Linux 4.4.0-51-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups:
+  
+ _MarkForUpload: True
+ dmi.bios.date: 08/28/2014
+ dmi.bios.vendor: Dell Inc.
+ dmi.bios.version: 1.0.4
+ dmi.board.name: 0H21J3
+ dmi.board.vendor: Dell Inc.
+ dmi.board.version: A04
+ dmi.chassis.type: 23
+ dmi.chassis.vendor: Dell Inc.
+ dmi.modalias: 
dmi:bvnDellInc.:bvr1.0.4:bd08/28/2014:svnDellInc.:pnPowerEdgeR730xd:pvr:rvnDellInc.:rn0H21J3:rvrA04:cvnDellInc.:ct23:cvr:
+ dmi.product.name: PowerEdge R730xd
+ dmi.sys.vendor: Dell Inc.

** Attachment added: "BootDmesg.txt"
   
https://bugs.launchpad.net/bugs/1662573/+attachment/4815224/+files/BootDmesg.txt

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https://bugs.launchpad.net/bugs/1662573

Title:
  bcache ioutil to 100% needs node reboot (no kern logs related)

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