[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
--
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/1579106
Title:
Using bcache for / leads to hung processes
Status in linux package in Ubuntu:
Expired
Bug description:
I've used maas 1.9.1 to setup a bcache partition mount as /. The
bcache is made of a 400GB SSD backed by sda-part2. The sda drive is a
1TB disk with 1GB carved out for /boot (sda-part1) and the rest given
to sda-part2. I believe the bcache mode is set to write-through.
Within an hour of this machine being deployed (it's being used as a
node in a landscape autopilot openstack deployment) it starts showing
hung processes. The output of 'ps faxw' (attached as 'amco-process-
list.txt) shows lots of process in the 'D' state and launching more
processes that write to the disk will likely get stuck (for example
the 'apt-get install python-jenkins' process).
This is reproducible.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-85-generic 3.13.0-85.129
ProcVersionSignature: User Name 3.13.0-85.129-generic 3.13.11-ckt36
Uname: Linux 3.13.0-85-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 May 6 03:07 seq
crw-rw---- 1 root audio 116, 33 May 6 03:07 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
Date: Fri May 6 14:24:20 2016
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
MachineType: HP ProLiant DL360e Gen8
PciMultimedia:
ProcEnviron:
TERM=screen
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-85-generic
root=UUID=cd48c2ff-f38e-4892-a5e2-8862e4412c29 ro console=ttyS0
RelatedPackageVersions:
linux-restricted-modules-3.13.0-85-generic N/A
linux-backports-modules-3.13.0-85-generic N/A
linux-firmware 1.127.22
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/02/2014
dmi.bios.vendor: HP
dmi.bios.version: P73
dmi.chassis.type: 23
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrP73:bd08/02/2014:svnHP:pnProLiantDL360eGen8:pvr:cvnHP:ct23:cvr:
dmi.product.name: ProLiant DL360e Gen8
dmi.sys.vendor: HP
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1579106/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
