On Thu, Dec 8, 2016 at 10:15 AM, Robert Nelson <[email protected]> wrote:
> On Thu, Dec 8, 2016 at 3:38 AM, Tarmo Kuuse <[email protected]> wrote:
>> Hi!
>>
>> I was recently flashing a Debian image from https://rcn-ee.net to internal
>> eMMC using an SD card. I was flashing 6 BeagleBone Green boards and 2 of
>> those showed errors in the console during the process:
>>
>> [  336.911666] omap_hsmmc 481d8000.mmc: prep_slave_sg() failed
>> [  336.917278] omap_hsmmc 481d8000.mmc: MMC start dma failure
>>         473.56M  84%    9.12MB/s    0:00:08  [  336.952874] mmcblk1: unknown
>> error -1 sending read/write command, card status 0x900
>> [  336.960803] blk_update_request: I/O error, dev mmcblk1, sector 1087424
>> [  336.967438] blk_update_request: I/O error, dev mmcblk1, sector 1087432
>>  etc ...
>>
>> The copying completed, the boards rebooted and I couldn't detect any
>> immediate problems running the mal-flashed boards. It does look rather
>> scary, however, so I gave it a quick googling and ended up with this thread:
>> https://archlinuxarm.org/forum/viewtopic.php?t=9379&p=48893
>>
>> Adding the line below to the beginning of
>> "/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh" resolves the I/O error.
>>
>> sysctl -w vm.min_free_kbytes=16384
>>
>> Any guesses as to whether there's an actual problem with rsync's memory
>> usage, causing errors in the flashing process? Would it be a good idea to
>> update the upsream script used in rcn-ee.net?
>
> Thanks Tarmo!
>
> I've added the change, looks like it's booting with only 2667 kbytes..
>
> ==> sysctl: vm.min_free_kbytes=[2667]
> ==> sysctl: setting: [sysctl -w vm.min_free_kbytes=16384]
> vm.min_free_kbytes = 16384
>
> https://github.com/RobertCNelson/boot-scripts/commit/8257ea5800adb6cdc8d4ca3230eac44ae7c54eea
>
> Now running on one of my very (early alpha) picky bbgw, that usually
> doesn't want to flash the eMMC..

Very Cool Tarmo!!!

That just flashed my alpha bbgw that almost never flashes. ;)

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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