[sudo-access] front door computer disk backup

[Jake]

i guess a local disk backup doesn't help if it goes missing :)

thanks Anthony, lemme know how i can help

On Mon, 24 Sep 2018, Anthony Di Franco wrote:

> I would be happy to have a look at this. If we deem it adequate, I could
> just write a cron job to rsync everything to a remote server and perhaps
> also a spare local disk, or the like. I would need a quick primer on how
> the thing is currently set up. I'll be around Wednesday evening so that
> would be a convenient time for me to have a look at this.
> Anthony
>
> On Wed, Sep 19, 2018 at 12:46 PM Jake <jake at spaz.org> wrote:
>
>> I notice sometimes when i log into the front door computer that the command
>> prompt is showing that the disk is in read-write mode.  I'm worried that
>> if too
>> much activity happens to the eMMC disk of the beaglebone black that runs
>> the
>> door, that we might have a disk failure.
>>
>> either way I think we should have a backup of the door computers'
>> filesystem,
>> maybe an image of the whole disk, that we can automatically maintain so
>> that if
>> it ever gets corrupted or flooded or whatever we can easily replace it.
>>
>> is anyone on this list willing to take that on?  I'm not an expert at this
>> and
>> I feel like others might have an easier time with it.
>>
>> also I think we should consider migrating the entire system to an SD card
>> instead of using the soldered-on eMMC chip on the beaglebone (which
>> eventually
>> dies and ruins everythinng)
>>
>> here's the disk situation:
>>
>> /dev/disk/by-uuid/6b3e6ea0-eba5-402a-ae7a-ec2c7555affb on / type ext4
>> (6b3e6ea0-eba5-402a-ae7a-ec2c7555affb == mmcblk1p2 AKA the eMMC)
>> /dev/mmcblk1p1 on /boot/uboot type vfat
>> /dev/mmcblk0p1 on /mnt/sd_card type ext4 (this is the actual sd card)
>>
>> the SDcard that's in there now is empty so it seems like someone could try
>> copying the system to it (whether for backup or to boot from it) but I
>> have no
>> idea how to make a BBB boot from SDcard instead of built-in eMMC although
>> i'm
>> sure it's no big deal...
>>
>> anyway this is just a heads-up so that we make it easy to fix in case
>> something
>> happens to the door system disk.  It's been extremely reliable for years
>> but we
>> can't take that for granite* and it's important infrastructure.
>>
>> -jake
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>