** Description changed: 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://lkml.org/lkml/2017/12/1/80 [2] https://groups.google.com/forum/#!topic/bfq-iosched/nB2cVfDMSOU - == SRU Justification == - 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. + 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.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1780066 Title: [Bionic] Disk IO hangs when using BFQ as io scheduler To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780066/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
