Public bug reported:
[Impact]
The 5.8 kernel (groovy) is not still 100% reliable with hibernation,
especially on the Xen instance type. However, re-aligning the config
options as much as possible with the 5.4 kernel (focal) allows to
hibernate and resume with a success rate close to 100% (according to our
tests on the AWS cloud).
[Test case]
- spin up an AWS instance (for example a c4.8xlarge instance type)
- run a memory stress test
- hibernate
- resume
- verify that the system has been resumed correctly and the memory stress test
is still running
[Fix]
Identify the minimum subset of config changes that we need to apply to
the 5.8 kernel to make hibernation as reliable as 5.4.
[Regression potential]
Still need to be evaluated exactly, probably we will have to apply only
.config changes, so regression potential will be minimal.
** Affects: linux-aws (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-aws (Ubuntu Groovy)
Importance: Undecided
Status: New
** Also affects: linux-aws (Ubuntu Groovy)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1902926
Title:
aws: improve hibernation reliability in groovy
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