OTA zip failled on reboot

[Thierry GAYET]

Hi,

I am building my own rom fro android 7.1.1 release r38 and i am managing my own OTA. 

My device is a Google/Pixel (sailfish).

I am building my android image without any problem using the following commands:

$ source build/envsetup.sh

$ lunch .... (sailfish / userdebug)

$ make update_api

$ make droid

Then i am generating my own OTA zipfile using the following commands:

$ make brillo_update_payload

$ make otapackage

At the end the zip file is well generated and i can then push it on my update server.

My update app well detect my ota update and i can download it locally into the /data partition (/data/data/com.foo.otaupdate/files/updates.172.16.9.31/dev/sailfish/test001/ota.zip)

The verify step work fine using the verifyPackage() ;

The install step generate two files (block.map and uncrypt_file) using the install_package(ctx, package_file) ;

Then reboot as RECOVERY_UPDATE 

Finally the device reboot and switch in recovery mode but it failled 'cos it told me the following message : No /cache partition found

After inspection, the recovery.fstab doesn't have a /cache entry maybe 'cos the /cache is now inside the /data one.

The problem is that the /cache is mandatory for the update installation.

Does anyone can tell me why my recovery failled after the reboot ?

Many thanks in advance.

BR

Thierry

[Dan Willemsen]

sailfish uses A/B updates, which changes how updates are applied (no need for a cache partition): https://source.android.com/devices/tech/ota/ab_updates

- Dan

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