[Bionic] Disk IO hangs when using BFQ as io scheduler
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
| linux (Ubuntu) |
Undecided
|
Jesse Sung | ||
| Bionic |
Undecided
|
Unassigned |
Bug Description
When BFQ is used, disk IO will hang some seconds after boot. This was also reported in some public MLs [1][2]. The fix is already in mainline, but it's not available in 4.15.
[1] https:/
[2] https:/
== SRU Justification ==
Impact:
Disk IO hangs several seconds after booting with a bionic Ubuntu kernel
Fix:
Three patches are cherry-picked for SRU. "block, bfq: add requeue-request hook" is the fix, while the other two are cleanups and make the whole fixes clean cherry-picks.
Testcase:
Boot the kernel with BFQ as IO scheduler.
Risk of Regression:
Clean cherry-picks from upstream so the risk should be fairly low.
description: | updated |
description: | updated |
Changed in linux (Ubuntu Bionic): | |
status: | New → Fix Committed |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-bionic removed: verification-needed-bionic |
Launchpad Janitor (janitor) wrote : | #2 |
This bug was fixed in the package linux - 4.15.0-33.36
---------------
linux (4.15.0-33.36) bionic; urgency=medium
* linux: 4.15.0-33.36 -proposed tracker (LP: #1787149)
* RTNL assertion failure on ipvlan (LP: #1776927)
- ipvlan: drop ipv6 dependency
- ipvlan: use per device spinlock to protect addrs list updates
- SAUCE: fix warning from "ipvlan: drop ipv6 dependency"
* ubuntu_bpf_jit test failed on Bionic s390x systems (LP: #1753941)
- test_bpf: flag tests that cannot be jited on s390
* HDMI/DP audio can't work on the laptop of Dell Latitude 5495 (LP: #1782689)
- drm/nouveau: fix nouveau_
- drm/radeon: fix radeon_
- drm/amdgpu: fix amdgpu_
- platform/x86: apple-gmux: fix gmux_get_
- ALSA: hda: use PCI_BASE_
- vga_switcheroo: set audio client id according to bound GPU id
* locking sockets broken due to missing AppArmor socket mediation patches
(LP: #1780227)
- UBUNTU SAUCE: apparmor: fix apparmor mediating locking non-fs, unix sockets
* Update2 for ocxl driver (LP: #1781436)
- ocxl: Fix page fault handler in case of fault on dying process
* netns: unable to follow an interface that moves to another netns
(LP: #1774225)
- net: core: Expose number of link up/down transitions
- dev: always advertise the new nsid when the netns iface changes
- dev: advertise the new ifindex when the netns iface changes
* [Bionic] Disk IO hangs when using BFQ as io scheduler (LP: #1780066)
- block, bfq: fix occurrences of request finish method's old name
- block, bfq: remove batches of confusing ifdefs
- block, bfq: add requeue-request hook
* HP ProBook 455 G5 needs mute-led-gpio fixup (LP: #1781763)
- ALSA: hda: add mute led support for HP ProBook 455 G5
* [Bionic] bug fixes to improve stability of the ThunderX2 i2c driver
(LP: #1781476)
- i2c: xlp9xx: Fix issue seen when updating receive length
- i2c: xlp9xx: Make sure the transfer size is not more than
I2C_
* x86/kvm: fix LAPIC timer drift when guest uses periodic mode (LP: #1778486)
- x86/kvm: fix LAPIC timer drift when guest uses periodic mode
* Please include ax88179_178a and r8152 modules in d-i udeb (LP: #1771823)
- [Config:] d-i: Add ax88179_178a and r8152 to nic-modules
* Nvidia fails after switching its mode (LP: #1778658)
- PCI: Restore config space on runtime resume despite being unbound
* Kernel error "task zfs:pid blocked for more than 120 seconds" (LP: #1781364)
- SAUCE: (noup) zfs to 0.7.5-1ubuntu16.3
* CVE-2018-12232
- PATCH 1/1] socket: close race condition between sock_close() and
sockfs_
* CVE-2018-10323
- xfs: set format back to extents if xfs_bmap_
* change front mic location for more lenovo m7/8/9xx machines (LP: #1781316)
- ALSA: hda/realtek - Fix the problem of two front mics on more machines
- ALSA: hda/realtek - two more lenovo models need fixup of MIC_LOCATION
* Cephfs + fscache: unab...
Changed in linux (Ubuntu Bionic): | |
status: | Fix Committed → Fix Released |
Changed in linux (Ubuntu): | |
status: | Fix Committed → Fix Released |
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification- needed- bionic' to 'verification- done-bionic' . If the problem still exists, change the tag 'verification- needed- bionic' to 'verification- failed- bionic' .
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!