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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1662573 Title: bcache ioutil to 100% needs node reboot (no kern logs related) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1662573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
