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Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/hypervisor/1967814')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/hypervisor/1967814 | 23 |
1 files changed, 0 insertions, 23 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/hypervisor/1967814 b/results/classifier/deepseek-2-tmp/output/hypervisor/1967814 deleted file mode 100644 index a56ec88e2..000000000 --- a/results/classifier/deepseek-2-tmp/output/hypervisor/1967814 +++ /dev/null @@ -1,23 +0,0 @@ - -Ubuntu 20.04.3 - ilzlnx3g1 - virtio-scsi devs on KVM guest having miscompares on disktests when there is a failed path. - -== Comment: #63 - Halil Pasic <email address hidden> - 2022-03-28 17:33:34 == -I'm pretty confident I've figured out what is going on. - -From the guest side, the decision whether the SCSI command was completed successfully or not comes down to looking at the sense data. Prior to commit -a108557bbf ("scsi: inline sg_io_sense_from_errno() into the callers."), we don't -build sense data as a response to seeing a host status presented by the host SCSI stack (e.g. kernel). - -Thus when the kernel tells us that a given SCSI command did not get completed via -SCSI_HOST_TRANSPORT_DISRUPTED or SCSI_HOST_NO_LUN, we end up fooling the guest into believing that the command completed successfully. - -The guest kernel, and especially virtio and multipath are at no fault (AFAIU). Given these facts, it isn't all that surprising, that we end up with corruptions. - -All we have to do is do backports for QEMU (when necessary). I didn't investigate vhost-scsi -- my guess is, that it ain't affected. - -How do we want to handle the back-ports? - -== Comment: #66 - Halil Pasic <email address hidden> - 2022-04-04 05:36:33 == -This is a proposed backport containing 7 patches in mbox format. I tried to pick patches sanely, and all I had to do was basically resolving merge conflicts. - -I have to admit I have no extensive experience in doing such invasive backports, and my knowledge of the QEMU SCSI stack is very limited. I would be happy if the Ubuntu folks would have a good look at this, and if possible improve on it. \ No newline at end of file |