[Ovmsdev] ota questions

Michael Balzer dexter at expeedo.de
Sat Mar 17 19:44:26 HKT 2018 

Maybe renewing the DNS lease would also fix my new issue.

Shaun, did you push that change to some repository I can pull from?

Regards,
Michael


Am 16.03.2018 um 19:29 schrieb Shaun Jurrens:
> Hi,
>
> I’ve been reluctant to butt in here, but the behavior apropos DNS is expected behavior and hard-coding DNS servers would seem a little heavy-handed at least.
> Basically the dhcp client is just doing its job. The fix is just to re-issue a dhcp lease request for/from the interface that is still up, if any. This will
> reset the resolver information and DNS will just work. 
>
> The solution with both nets working and routing would largely seem unnecessary and a bit complex. It’s also going to be too difficult to know what to route
> where for the average user, i.e. path cost. In today’s world, it would be a rare exception if 3G/4G was a preferred path based on either bandwidth or cost. 
>
> Yada, yada,
> Shaun 
>
>
> On 16 Mar 2018, at 02:28, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>
>>
>>> The problem really seemed to occur only after switching from Wifi to modem, also tried with another SIM.
>>
>> Yes, that is it. If modem gives you some public DNS, then you start wifi which gives a private DNS, then you stop wifi and are left with a modem that can’t
>> access the wifi’s private DNS.
>>
>> Setting 8.8.8.8 8.8.4.4, with my new code, avoids that.
>>
>>> Another OTA issue, I haven't fully figured out yet: after switching on the modem, the download will always go via modem. As long as Wifi is available, it
>>> should be used -- maybe we also need to control the default route?
>>
>> I haven’t address the ‘preferred route’ issue yet. My original idea was to sleep the modem when wifi came up, but I’m now thinking maybe better to keep the
>> modem alive and instead use a priority preference thing. Something like some helper functions in NetManager that can be simply called to bind an outgoing
>> connection to the highest priority network. But, not implemented yet.
>>
>> Regards, Mark.
>>
>>> On 16 Mar 2018, at 7:05 AM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>>
>>> The problem really seemed to occur only after switching from Wifi to modem, also tried with another SIM.
>>>
>>> I have now configured the Google DNS servers as well, will report if I get the issue again.
>>>
>>> Another OTA issue, I haven't fully figured out yet: after switching on the modem, the download will always go via modem. As long as Wifi is available, it
>>> should be used -- maybe we also need to control the default route?
>>>
>>> OTA modem download does not work from my server. First thought it's Hologram (a single firmware update needs more volume than is covered by the free
>>> developer plan), but it also does not work with my local SIM with a high volume plan.
>>>
>>> I noticed a rather strange effect: when I let it run, the server actually logged the download after 17 minutes, but still no download progress on the console.
>>>
>>> I need to retry this with verbose logging on the gsm-ppp channel to see what's going on.
>>>
>>> Regards,
>>> Michael
>>>
>>>
>>> Am 12.03.2018 um 16:08 schrieb Mark Webb-Johnson:
>>>> I’ve added a ‘network status’ command. Can you try it, when you get DNS errors, to see what the DNS servers are set to?
>>>>
>>>> Regards, Mark
>>>>
>>>>> On 12 Mar 2018, at 10:29 AM, Mark Webb-Johnson <mark at webb-johnson.net <mailto:mark at webb-johnson.net>> wrote:
>>>>>
>>>>>> Working on the OTA web UI.
>>>>>
>>>>> That will be very useful. Thanks.
>>>>>
>>>>>> a) Flashing and changing the boot partition outputs some irritating overflow and "??" log messages:
>>>>>> Can these safely be ignored? The flashed partitions seem to work correctly.
>>>>>
>>>>> Yes, I too find these ugly. It is a ‘make monitor weirdism:
>>>>>
>>>>>     https://www.esp32.com/viewtopic.php?t=4199
>>>>>
>>>>>     /No, no need to worry. Those are from the ``make monitor`` command. As soon as this sees a hex number scroll by that smells like an address in the
>>>>>     ESP32 memory map, it tries to be helpful and converts it to a symbol. In some cases, this leads it to weird messages like this./
>>>>>
>>>>>
>>>>>> b) How do you get back to the factory partition if something went so wrong you can't use the "ota" command?
>>>>>
>>>>> Supposedly if the OTA partition doesn’t boot (or checksum mismatch, etc), the bootloader will boot factory.
>>>>>
>>>>> The selection of current boot partition is in the otadata partition:
>>>>>
>>>>>     # OVMS 16MB flash ESP32 Partition Table
>>>>>     # Name,   Type, SubType, Offset,   Size
>>>>>     nvs,      data, nvs,     0x9000,  0x4000
>>>>>     otadata,  data, ota,     0xd000,  0x2000
>>>>>     phy_init, data, phy,     0xf000,  0x1000
>>>>>     factory,  app,  factory, 0x10000,  4M
>>>>>     ota_0,    app,  ota_0,   ,         4M
>>>>>     ota_1,    app,  ota_1,   ,         4M
>>>>>     store,    data, fat,     ,         1M
>>>>>
>>>>>
>>>>> I guess zapping that would reset to defaults (factory boot)? I think erase_region may do that:
>>>>>
>>>>>     |esptool.py erase_region 0xd000 0x2000|
>>>>>
>>>>>
>>>>> But, haven’t tried it myself.
>>>>>
>>>>>> c) ota flash http still gives me a DNS lookup error on any other host than api.openvehicles.com <http://api.openvehicles.com/> and fails to download
>>>>>> from api.openvehicles.com <http://api.openvehicles.com/>, regardless of
>>>>>> the type of network (wifi/modem).
>>>>>
>>>>> I saw this a few months ago, but not recently.
>>>>>
>>>>> Line 107 of ovms_net.cpp. It just does a getaddrinfo() on the host.
>>>>>
>>>>> Regards, Mark.
>>>>>
>>>>>> On 12 Mar 2018, at 7:13 AM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>>>>>
>>>>>> Working on the OTA web UI.
>>>>>>
>>>>>> Some questions:
>>>>>>
>>>>>> a) Flashing and changing the boot partition outputs some irritating overflow and "??" log messages:
>>>>>>
>>>>>> OVMS > ota flash vfs /sd/ovms3.done
>>>>>> Current running partition is: ota_0
>>>>>> Target partition is: ota_1
>>>>>> Source image is 1480592 bytes in size
>>>>>> Preparing flash partition...
>>>>>> Flashing image partition...
>>>>>> Setting boot partition...
>>>>>> OTA flash was successful
>>>>>>   Flashed 1480592 bytes from /sd/ovms3.done
>>>>>>   Next boot will be from 'ota_1'
>>>>>> I (1316956) esp_image: segment 0: paddr=0x00810020 vaddr=0x3f400020 size=0x5879c (362396) map
>>>>>> I (1317156) esp_image: segment 1: paddr=0x008687c4 vaddr=0x3ffb0000 size=0x0382c ( 14380)
>>>>>> I (1317156) esp_image: segment 2: paddr=0x0086bff8 vaddr=0x40080000 size=0x00400 (  1024)
>>>>>> 0x40080000: _WindowOverflow4 at /home/balzer/esp/esp-idf/components/freertos/./xtensa_vectors.S:1685
>>>>>>
>>>>>> I (1317166) esp_image: segment 3: paddr=0x0086c400 vaddr=0x40080400 size=0x03c10 ( 15376)
>>>>>> I (1317176) esp_image: segment 4: paddr=0x00870018 vaddr=0x400d0018 size=0xfb154 (1028436) map
>>>>>> 0x400d0018: _flash_cache_start at ??:?
>>>>>>
>>>>>> I (1317746) esp_image: segment 5: paddr=0x0096b174 vaddr=0x40084010 size=0x0e5b4 ( 58804)
>>>>>> 0x40084010: spi_flash_mmap at /home/balzer/esp/esp-idf/components/spi_flash/./flash_mmap.c:293
>>>>>>
>>>>>> I (1317776) esp_image: segment 6: paddr=0x00979730 vaddr=0x400c0000 size=0x00034 (    52)
>>>>>> I (1317776) esp_image: segment 0: paddr=0x00810020 vaddr=0x3f400020 size=0x5879c (362396) map
>>>>>> I (1317976) esp_image: segment 1: paddr=0x008687c4 vaddr=0x3ffb0000 size=0x0382c ( 14380)
>>>>>> I (1317986) esp_image: segment 2: paddr=0x0086bff8 vaddr=0x40080000 size=0x00400 (  1024)
>>>>>> 0x40080000: _WindowOverflow4 at /home/balzer/esp/esp-idf/components/freertos/./xtensa_vectors.S:1685
>>>>>>
>>>>>> I (1317986) esp_image: segment 3: paddr=0x0086c400 vaddr=0x40080400 size=0x03c10 ( 15376)
>>>>>> I (1317996) esp_image: segment 4: paddr=0x00870018 vaddr=0x400d0018 size=0xfb154 (1028436) map
>>>>>> 0x400d0018: _flash_cache_start at ??:?
>>>>>>
>>>>>> I (1318566) esp_image: segment 5: paddr=0x0096b174 vaddr=0x40084010 size=0x0e5b4 ( 58804)
>>>>>> 0x40084010: spi_flash_mmap at /home/balzer/esp/esp-idf/components/spi_flash/./flash_mmap.c:293
>>>>>>
>>>>>> I (1318606) esp_image: segment 6: paddr=0x00979730 vaddr=0x400c0000 size=0x00034 (    52)
>>>>>>
>>>>>> …
>>>>>>
>>>>>> OVMS > ota boot ota_1
>>>>>> Boot from ota_1 at 0x00810000 (size 0x00400000)
>>>>>> I (301766) esp_image: segment 0: paddr=0x00810020 vaddr=0x3f400020 size=0x5879c (362396) map
>>>>>> I (301966) esp_image: segment 1: paddr=0x008687c4 vaddr=0x3ffb0000 size=0x0382c ( 14380)
>>>>>> I (301976) esp_image: segment 2: paddr=0x0086bff8 vaddr=0x40080000 size=0x00400 (  1024)
>>>>>> 0x40080000: _WindowOverflow4 at /home/balzer/esp/esp-idf/components/freertos/./xtensa_vectors.S:1685
>>>>>>
>>>>>> I (301976) esp_image: segment 3: paddr=0x0086c400 vaddr=0x40080400 size=0x03c10 ( 15376)
>>>>>> I (301986) esp_image: segment 4: paddr=0x00870018 vaddr=0x400d0018 size=0xfb154 (1028436) map
>>>>>> 0x400d0018: _flash_cache_start at ??:?
>>>>>>
>>>>>> I (302556) esp_image: segment 5: paddr=0x0096b174 vaddr=0x40084010 size=0x0e5b4 ( 58804)
>>>>>> 0x40084010: spi_flash_mmap at /home/balzer/esp/esp-idf/components/spi_flash/./flash_mmap.c:293
>>>>>>
>>>>>> I (302596) esp_image: segment 6: paddr=0x00979730 vaddr=0x400c0000 size=0x00034 (    52)
>>>>>>
>>>>>>
>>>>>> Can these safely be ignored? The flashed partitions seem to work correctly.
>>>>>>
>>>>>>
>>>>>> b) How do you get back to the factory partition if something went so wrong you can't use the "ota" command?
>>>>>>
>>>>>> I would have expected "make flash" to reset the boot partition to "factory", as all flashes are only done there, but it doesn't.
>>>>>>
>>>>>> So if you're on another partition with a broken firmware, how do you recover? Is there a way to set the boot partition using esptool.py?
>>>>>>
>>>>>>
>>>>>> c) ota flash http still gives me a DNS lookup error on any other host than api.openvehicles.com <http://api.openvehicles.com/> and fails to download from
>>>>>> api.openvehicles.com <http://api.openvehicles.com/>, regardless of
>>>>>> the type of network (wifi/modem).
>>>>>>
>>>>>> OVMS > ota flash http www.google.com/ovms3.bin <http://www.google.com/ovms3.bin>
>>>>>> Current running partition is: factory
>>>>>> Target partition is: ota_0
>>>>>> Download firmware from www.google.com/ovms3.bin <http://www.google.com/ovms3.bin> to ota_0
>>>>>> Error: Request failed
>>>>>> W (666891) net: DNS lookup on www.google.com <http://www.google.com/> failed err=200
>>>>>>
>>>>>> OVMS > ota flash http api.openvehicles.com/test.bin <http://api.openvehicles.com/test.bin>
>>>>>> Current running partition is: factory
>>>>>> Target partition is: ota_0
>>>>>> Download firmware from api.openvehicles.com/test.bin <http://api.openvehicles.com/test.bin> to ota_0
>>>>>> […dead, needs reset]
>>>>>>
>>>>>> Is this a local problem of mine?
>>>>>>
>>>>>>
>>>>>> Regards,
>>>>>> Michael
>>>>>>
>>>>>> -- 
>>>>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>>>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> OvmsDev mailing list
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>>>>>> http://lists.teslaclub.hk/mailman/listinfo/ovmsdev
>>>>>
>>>>
>>>>
>>>>
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>>>
>>> -- 
>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>> _______________________________________________
>>> OvmsDev mailing list
>>> OvmsDev at lists.teslaclub.hk <mailto:OvmsDev at lists.teslaclub.hk>
>>> http://lists.teslaclub.hk/mailman/listinfo/ovmsdev
>>
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-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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