NothingOSの更新取得時のログについて
NothingOSのFastboot ROMを使っている方はご存じだと思いますが、NothingOSは更新の度に決まったスロットにインストールを行なわないと起動をしない問題が存在します。logcatを使ってログを取得してみた所、結構面白い事に気付けたりもしました。
03-21 04:19:29.652 1664 1664 I update_engine: [INFO:install_plan.cc(80)] InstallPlan:
03-21 04:19:29.652 1664 1664 I update_engine: type: new_update
03-21 04:19:29.652 1664 1664 I update_engine: version:
03-21 04:19:29.652 1664 1664 I update_engine: source_slot: A
03-21 04:19:29.652 1664 1664 I update_engine: target_slot: B
03-21 04:19:29.652 1664 1664 I update_engine: initial url: https://android.googleapis.com/packages/ota-api/package/364c55148c84d22efab1c58953d807e40da040a9.zip
03-21 04:19:29.652 1664 1664 I update_engine: hash_checks_mandatory: true
03-21 04:19:29.652 1664 1664 I update_engine: powerwash_required: false
03-21 04:19:29.652 1664 1664 I update_engine: switch_slot_on_reboot: false
03-21 04:19:29.652 1664 1664 I update_engine: run_post_install: true
03-21 04:19:29.652 1664 1664 I update_engine: is_rollback: false
03-21 04:19:29.652 1664 1664 I update_engine: rollback_data_save_requested: false
03-21 04:19:29.652 1664 1664 I update_engine: write_verity: true
03-21 04:19:29.652 1664 1664 I update_engine: Partition: abl
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 274432
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/abl_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: 92CC512461AF7F7377E62CB2D864C6876FA2CB8C8113386A06D381C7AA6947A5
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 274432
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/abl_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: 14D1B2964E3585F72FFE125F174CAC0A2CCC6C012E29F332ECC41E915DD459CC
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/abl_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: aop
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 204800
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/aop_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: C9B6164DA34BB2BE43F4F8189036A158471F122C729EA5F9BE677C70CACEA3CA
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 208896
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/aop_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: 3BC5F58C646765EC264969D7BC33E354709A4B82A9AAF19D331B995E596FC6BE
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/aop_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: bluetooth
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 503808
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/bluetooth_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: E4CCDEEF8DCA61C842B97B7FE24C935ADD19B1008538326A555B49953E5E10AC
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 503808
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/bluetooth_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: AC7475A3789B458785AD01253B89F001F1D77A66D015229BAABCB43E17776A33
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/bluetooth_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: boot
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 100663296
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/boot_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: 04B08F483632BB8715BB70231F1C0B2AF002DA7CE83D552563D88AE3D32DF20E
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 100663296
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/boot_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: 7D03A73A306AC0501F2E089101845D38790A000CA680D113A8CF01A750DEB682
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/boot_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: cpucp
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 184320
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/cpucp_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: AE92D09D7316D0243F5F8210A05C6BF7EE3B481C243A32E04A62525F60A87356
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 188416
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/cpucp_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: 489D22AB4755128E2EF808FDBACAA630FC2D2CD7342C57ECA7E6CD1E2A0D1AE9
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/cpucp_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: devcfg
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 49152
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/devcfg_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: A02494B756FD92758AC62A9CBDC589D59A081C49DFA0E17792B69297FAD963D4
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 53248
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/devcfg_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: ADB551049B75307A0F1FA2B3A7364CC5D24EE22F6FE25408E738101A80E6A31C
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/devcfg_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: dsp
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 67108864
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/dsp_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: A208348A3CE78F979CE5BBBE82D9329D51F26A6F235777BCE4617622471C10BD
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 67108864
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/dsp_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: A208348A3CE78F979CE5BBBE82D9329D51F26A6F235777BCE4617622471C10BD
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/dsp_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: dtbo
03-21 04:19:29.652 1664 1664 I update_engine: source_size: 25165824
03-21 04:19:29.652 1664 1664 I update_engine: source_path: /dev/block/bootdevice/by-name/dtbo_a
03-21 04:19:29.652 1664 1664 I update_engine: source_hash: 4A7F8EBEDB2D2476EDBED0D34B16330E31449B5242B11471E98458FEADBFB27E
03-21 04:19:29.652 1664 1664 I update_engine: target_size: 25165824
03-21 04:19:29.652 1664 1664 I update_engine: target_path: /dev/block/bootdevice/by-name/dtbo_b
03-21 04:19:29.652 1664 1664 I update_engine: target_hash: 275BDC1AE39DECCCBC80051AE5D75E9ED7EF8399958DD87752B4923E8A1C2FF3
03-21 04:19:29.652 1664 1664 I update_engine: run_postinstall: false
03-21 04:19:29.652 1664 1664 I update_engine: postinstall_path:
03-21 04:19:29.652 1664 1664 I update_engine: readonly_target_path: /dev/block/bootdevice/by-name/dtbo_b
03-21 04:19:29.652 1664 1664 I update_engine: filesystem_type:
03-21 04:19:29.652 1664 1664 I update_engine: Partition: featenabl
03-21 04:19:29.653 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 0 (abl) on device /dev/block/bootdevice/by-name/abl_b
03-21 04:19:29.654 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition abl
03-21 04:19:29.657 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of abl: 14D1B2964E3585F72FFE125F174CAC0A2CCC6C012E29F332ECC41E915DD459CC
03-21 04:19:29.658 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 1 (aop) on device /dev/block/bootdevice/by-name/aop_b
03-21 04:19:29.660 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition aop
03-21 04:19:29.662 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of aop: 3BC5F58C646765EC264969D7BC33E354709A4B82A9AAF19D331B995E596FC6BE
03-21 04:19:29.664 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 2 (bluetooth) on device /dev/block/bootdevice/by-name/bluetooth_b
03-21 04:19:29.665 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition bluetooth
03-21 04:19:29.669 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of bluetooth: AC7475A3789B458785AD01253B89F001F1D77A66D015229BAABCB43E17776A33
03-21 04:19:29.671 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 3 (boot) on device /dev/block/bootdevice/by-name/boot_b
03-21 04:19:29.673 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition boot
03-21 04:19:29.690 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:29.720 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:29.728 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:29.736 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:29.744 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:29.752 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:29.877 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:29.950 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of boot: 7D03A73A306AC0501F2E089101845D38790A000CA680D113A8CF01A750DEB682
03-21 04:19:29.984 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 4 (cpucp) on device /dev/block/bootdevice/by-name/cpucp_b
03-21 04:19:29.986 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition cpucp
03-21 04:19:29.988 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of cpucp: 489D22AB4755128E2EF808FDBACAA630FC2D2CD7342C57ECA7E6CD1E2A0D1AE9
03-21 04:19:29.990 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 5 (devcfg) on device /dev/block/bootdevice/by-name/devcfg_b
03-21 04:19:29.991 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition devcfg
03-21 04:19:29.993 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of devcfg: ADB551049B75307A0F1FA2B3A7364CC5D24EE22F6FE25408E738101A80E6A31C
03-21 04:19:29.994 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 6 (dsp) on device /dev/block/bootdevice/by-name/dsp_b
03-21 04:19:29.995 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition dsp
03-21 04:19:29.997 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.005 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.013 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.137 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.182 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of dsp: A208348A3CE78F979CE5BBBE82D9329D51F26A6F235777BCE4617622471C10BD
03-21 04:19:30.207 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 7 (dtbo) on device /dev/block/bootdevice/by-name/dtbo_b
03-21 04:19:30.209 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition dtbo
03-21 04:19:30.220 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.270 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.281 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of dtbo: 275BDC1AE39DECCCBC80051AE5D75E9ED7EF8399958DD87752B4923E8A1C2FF3
03-21 04:19:30.292 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 8 (featenabler) on device /dev/block/bootdevice/by-name/featenabler_b
03-21 04:19:30.294 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition featenabler
03-21 04:19:30.295 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of featenabler: A955E55E7B416C841F51C53B847300F21C1AEBA0F8ABA289227BDE78A7D62F7D
03-21 04:19:30.296 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 9 (hyp) on device /dev/block/bootdevice/by-name/hyp_b
03-21 04:19:30.298 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition hyp
03-21 04:19:30.304 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.310 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of hyp: 9AD677B047CCB718D704CCD2D9AEC140A67F7BFAD242A3FEFE10BC1B163077D6
03-21 04:19:30.312 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.313 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 10 (imagefv) on device /dev/block/bootdevice/by-name/imagefv_b
03-21 04:19:30.314 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition imagefv
03-21 04:19:30.318 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of imagefv: 5D31251D6FE9F471767C0B0FFEFA6AB9BFF7C98C3DA43ABE3F80C8C5D169C5E8
03-21 04:19:30.320 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 11 (keymaster) on device /dev/block/bootdevice/by-name/keymaster_b
03-21 04:19:30.320 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.321 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition keymaster
03-21 04:19:30.324 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of keymaster: 288A4B6F9D3701C24A0C9EC9080A0B9A608217533D1379D24F0FBD7D978CCF77
03-21 04:19:30.325 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 12 (modem) on device /dev/block/bootdevice/by-name/modem_b
03-21 04:19:30.327 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition modem
03-21 04:19:30.327 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.335 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.344 14898 14913 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.352 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.678 14898 15283 I SystemUpdate: [Control,InstallationControl] Installation progress updated to (0x211, 0.138).
03-21 04:19:30.689 1697 1955 W ProcessStats: Tracking association SourceState{ebc1964 com.google.android.gms.ui/10096 Top #14817} whose proc state 1 is better than process ProcessState{61a8738 com.google.android.gms.persistent/10096 pkg=com.google.android.gms} proc state 2 (31 skipped)
03-21 04:19:30.689 1697 1955 D CompatibilityInfo: mCompatibilityFlags - 0
03-21 04:19:30.689 1697 1955 D CompatibilityInfo: applicationDensity - 420
03-21 04:19:30.689 1697 1955 D CompatibilityInfo: applicationScale - 1.0
03-21 04:19:30.739 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.829 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of modem: 271A72B92FF2718EF1606DCC8A6AE1B84B9D95C746A08D116F14F4B9DE67C51C
03-21 04:19:30.892 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 13 (multiimgoem) on device /dev/block/bootdevice/by-name/multiimgoem_b
03-21 04:19:30.896 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(380)] Verity writes disabled on partition multiimgoem
03-21 04:19:30.898 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of multiimgoem: B7C64246CBFDAE27A4D0DB01D81A8B80AA830640B1595A7EE6735CE6FD77B5DF
03-21 04:19:30.899 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 14 (odm) on device /dev/block/dm-13
03-21 04:19:30.900 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(371)] Verity writes enabled on partition odm
03-21 04:19:30.908 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:30.908 1664 1664 I update_engine: [INFO:verity_writer_android.cc(97)] Read everything before hash tree. Ready to write hash tree.
03-21 04:19:30.909 1664 1664 I update_engine: [INFO:verity_writer_android.cc(119)] Writing verity hash tree to /dev/block/dm-13
03-21 04:19:30.910 1664 1664 I update_engine: [INFO:verity_writer_android.cc(134)] Writing verity FEC to /dev/block/dm-13
03-21 04:19:30.915 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:31.034 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(435)] Hash of odm: 08E52C0F15F7F444B99512081B99CD917D67611C665C2A512FD9E609FB02FFD5
03-21 04:19:31.036 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(329)] Hashing partition 15 (product) on device /dev/block/dm-19
03-21 04:19:31.038 1664 1664 I update_engine: [INFO:filesystem_verifier_action.cc(371)] Verity writes enabled on partition product
03-21 04:19:31.041 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.
03-21 04:19:31.051 14898 15283 I SystemUpdate: [Control,InstallationControl] Update engine status updated to 0x004.ログを見てみた結果、現在使用しているスロットと変更先のスロット。アップデータのURL、ロールバックやpowerwash(初期化)の可否、パッチを行なうファイルのハッシュ(これを照合する事でファイルに問題がないか確認をしている)と様々な情報が出ているのでした。アップデート時にログを取得すればどのスロットで起動をするのか事前に確認と変更するファイルのハッシュが確認できるでしょう。なお、Magiskでパッチを行なったboot.imgはハッシュが異なる為アップデートが失敗します。
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