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- focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.
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! ** Tags added: verification-needed-focal -- 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/1867109 Title: [UBUNTU 20.04] virtio-blk disks can go dissfunctional when swiotlb fills up Status in The Ubuntu-power-systems project: Fix Committed Status in linux package in Ubuntu: Fix Committed Bug description: virtio-blk disks can go dissfunctional when swiotlb fills up virtio-blk hw queue gets possibly permanently stopped when swiotlb full For example, with a PV guest choose a small swiotlb (30MB) and create IO load on several virtio-blk disks simultaneously. It actually should not matter what causes the swiotlb pressure (can be virtio-net as well). Fixes posted upstream: https://lkml.org/lkml/2020/2/13/306 We will need backports to support Protected Virtualization. IBM verified that the patches apply cleanly on focal/master-next, upstream commit ids for reference: commit bab7e6f05699a481787f7659c4f766dd87187dae Author: Halil Pasic <pa...@linux.ibm.com> Date: Thu Feb 13 13:37:27 2020 +0100 virtio-blk: fix hw_queue stopped on arbitrary error commit 24506976aec92052e9fe328146a2e574a1190986 Author: Halil Pasic <pa...@linux.ibm.com> Date: Thu Feb 13 13:37:28 2020 +0100 virtio-blk: improve virtqueue error to BLK_STS Also applies cleanly on 19.10..... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1867109/+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
