tree 2912a9c8af407f4b3cccbb7e56adb332a0873589
parent e315d0481fb36fe978b75f2e53b855d66ce5f4a1
author Martin Lindsay <mlindsay@google.com> 1635946807 +0000
committer CQ Bot <commit-bot@chromium.org> 1635946807 +0000

[cobalt][storage] Add metrics for bad blocks and nand ECC.

Metrics to examine the failure bahviours of the nand reads with regard
to ECC, to get an idea of how well/badly the fleet is faring. These will
be populated by the Nand driver reporting the results of read attempts
via Sampler.

Metrics for the number of bad blocks in the NDM, this will be reported
by the FTL/NDM process at start up and updated after each request along
with the existing stats to keep it in sync with the current view. This
will also be populated to inspect and reported via Sampler.

Bug: 85321
Change-Id: I38ba61892019d206385aa7006f3b4cfa692aaf49
Reviewed-on: https://fuchsia-review.googlesource.com/c/cobalt-registry/+/598026
Reviewed-by: Griffin Boyce <glamrock@google.com>
Reviewed-by: Steve Fung <stevefung@google.com>
Privacy-Approval: Griffin Boyce <glamrock@google.com>
Commit-Queue: Martin Lindsay <mlindsay@google.com>