I’m having an issue where even after the system passes the probation period it rolls back at some point. I’m trying to determine why this is happening and under what conditions does the system roll back even after passing probation? I check ‘legato status’, which shows the system is marked ‘good’. I…

Some additional details after a few rounds of testing. I found that the system rolls back when I’m running the device off a battery and I let the battery drain completely. When the battery is charged again and the device is powered it goes through the rollback process, despite the system being in a …

HI Ktanikel Legato currently doesn’t detect hardware faults (e.g. loss of power), and so will treat any quick reboot as a software fault, and roll back to golden master if too many occur in a short period. That’s why you can observe this when the battery drain completely . Some improvements should…

Hi plu, Thanks for the reply, that explains the behavior on our devices. As a follow up question, does this occur even when devMode is enabled? I have devMode enabled on our devices and I read somewhere that it bypasses some of these checks.

Hi ktanikel, you’re right! see Developer Mode - Legato Docs one method is to decrease the value of the probation period, for example to set to 30sec put into the .adef file something like that: processes: { envVars: { LE_PROBATION_MS = 30000 } best regards,

Hi @plu You mentioned some improvements to Legato to avoid spurious rollbacks on loss of power. Checked the legato change logs but no mention of this fix. Do you know if this is improved in a released Legato version or if this is still a problem in Legato 19.04?

Maybe this commit: https://github.com/legatoproject/legato-af/commit/081e52ea65e6ce5c205d8bff7c534c64677c1dd1

Looks promising! Will do some testing.

For info, during cyclic reset tests on WP7607-1 / legato 19.02, I was also facing some unexpected rollback despite for system being marked as good. It appears that this issue was linked to a wrong handling of the “bootCount” parameter. It has been fixed in 19.04. You can refer to the following com…

Hi there, Despite the promising comments about this being fixed in 19.04, I have been testing with the recent 21.05 release and I find that the rollback still happens after successive power cycles, regardless of whether the system is marked good. Is there a way to disable this rollback behavior? …

You can build your app to legato.cwe [image] Flash size wp7607 hi @jyijyi , Thanks for your help earlier. I was able to build <legate.cwe> and <system.wp76xx.update> file using make wp76xx command. Also I was to add myCustom.adef file and build separately with command: …

Rollback despite system being marked as good

Legato Application Framework

jyijyi April 5, 2022, 12:19pm 11

You can build your app to legato.cwe

A debug question

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Rollback despite system being marked as good

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