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Issue metadata

Status: Untriaged
Owner: ----
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug-Regression



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Rollback filed on M66

Project Member Reported by abod...@chromium.org, Feb 6 2018

Issue description


Please specify Cr-* of the system to which this bug/feature applies (add
the label below).

Steps To Reproduce:
(1) AU from M65 to M66 TOT
(2) Perform rollback from crosh>
(3)

Expected Result:
Should rollback to M65 version.

Actual Result:
Rollback Failed.

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)

What is the impact to the user, and is there a workaround? If so, what is
it?

Please provide any additional information below. Attach a screen shot or
log if possible.

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.


Log Info
***********************************************************************

[0206/113504:INFO:update_attempter.cc(738)] UpdateAttempter::GetRollbackSlot
[0206/113504:INFO:update_attempter.cc(743)]   Installed slots: 2
[0206/113504:INFO:update_attempter.cc(744)]   Booted from slot: A
[0206/113504:INFO:update_attempter.cc(761)] No other bootable slot found.
[0206/113504:ERROR:common_service.cc(93)] AttemptRollback(...): Domain=update_engine, Code=org.chromium.UpdateEngine.Error.Failed, Message=Rollback attempt failed.
[0206/113504:ERROR:common_service.cc(57)] Sending Update Engine Failure: AttemptRollback@../../../../../../../tmp/portage/chromeos-base/update_engine-0.0.3-r3137/work/update_engine-0.0.3/aosp/system/update_engine/common_service.cc:93: Rollback attempt failed.


 
update_engine.20180206-113002.txt
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I'm sorry I get to this late. 

I can see that the booted slot is on : cohortname="cyan_dev" version="10379.0.0" track="dev-channel

But can you provide which version was the one you want to rollback into?

Another question is, is this reproducible? because I got a m65-dev and cros flashed into TOT, the rollback passed. Can you clarify? AFAIK, rollback is not necessarily guaranteed!

Not reproduced after one more N+1 update. I will post more info if i can repro it again.

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