Excellent. Sanity check here: This also means that trusty is not
affected because the udev rules don't match.
I have /lib/udev/rules.d/40-hyperv-hotadd.rules:
# On Hyper-V Virtual Machines we want to add memory and cpus as soon as they
appear
ATTR{[dmi/id]sys_vendor}!="Microsoft Corporation", GOTO="hyperv_hotadd_end"
ATTR{[dmi/id]product_name}!="Virtual Machine", GOTO="hyperv_hotadd_end"
# Memory hotadd request
SUBSYSTEM=="memory", ACTION=="add",
DEVPATH=="/devices/system/memory/memory[0-9]*", TEST=="state",
ATTR{state}="online"
# CPU hotadd request
SUBSYSTEM=="cpu", ACTION=="add", DEVPATH=="/devices/system/cpu/cpu[0-9]*",
TEST=="online", ATTR{online}="1"
LABEL="hyperv_hotadd_end"
Whereas in xenial the file moved to /lib/udev/rules.d/40-vm-hotadd.rules
and includes ATTR{[dmi/id]sys_vendor}=="Xen", GOTO="vm_hotadd_apply"
which does trigger the bug.
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https://bugs.launchpad.net/bugs/1668129
Title:
Amazon I3 Instance Buffer I/O error on dev nvme0n1
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