My NVMe drive failed again yesterday. I no longer think the errors are
due to the APST support. I'm starting to think it's either something in
the Linux kernel 4.8.0-53 upgrade or simply a problem with the drive
hardware or firmware.
The time-line of the errors is shown below. Note that I never defined
the "default_ps_max_latency_us" parameter to 6000. I only set it to a
value of zero.
Parameter "nvme_core.default_ps_max_latency_us" is not defined:
2017-04-04 Upgraded to 4.8.0-46.49
2017-04-24 Upgraded to 4.8.0-49.52 ← Adds NVMe APST support (LP: #1664602)
2017-05-01 Upgraded to 4.8.0-51.54
2017-05-16 Upgraded to 4.8.0-52.55
2017-05-25 Upgraded to 4.8.0-53.56 ← Errors on NVMe drive
Parameter "nvme_core.default_ps_max_latency_us" is set to zero:
2017-05-29 Linux 4.8.0-53.56 (APST disabled) ← Running OK
2017-05-30 Linux 4.8.0-53.56 (APST disabled) ← Running OK
2017-05-31 Linux 4.8.0-53.56 (APST disabled) ← Errors on NVMe drive
At this point, I switched from the Hardware Enablement (HWE) stack back
to the original General Availability (GA) stack for the Linux kernel and
X server on Ubuntu 16.04.
2017-05-31 Linux 4.4.0-78.90 (GA) ← Running OK so far
2017-06-01 Linux 4.4.0-78.90 (GA) ← Running OK so far
I hope this change will help determine whether the errors are due to the
drive itself or something in the Linux 4.8 upgrade. I guess we should
close this bug report, or at least rename it.
Thank you,
John
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https://bugs.launchpad.net/bugs/1694596
Title:
LiteOn NVMe APST issue
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