[PLUG] Backup RPi SD card

Mon Apr 10 02:26:08 UTC 2017

Nat,
I have a kludge system that i am going to use until the passthrough charger/
battery arrives. It is ugly and being a kludge it is just a gell cell and a
power
supply, the battery is floating on the PSU. On power loss it picks up the
load
on the USB ports.

On Sun, Apr 9, 2017 at 7:23 PM, Chuck Hast <wchast at gmail.com> wrote:

> Tomas,
> The second selection looks more like what I am looking for but the first
> one
> will certainly work. But I do not see mention of pass through charging or
> charge while charging.
>
> Went ahead and bought the first selection.
>
> On Sun, Apr 9, 2017 at 6:46 AM, Nat Taylor <bioborg at gmail.com> wrote:
>
>> I use something like that second battery to power my pi, it's just a cell
>> phone charger, I'm not sure what running it while plugged in does to it's
>> life.   One could put it on a timer so the power cuts, it drains the
>> battery for a while, then charges back up if that was advantageous for
>> battery life...
>>
>> On Sun, Apr 9, 2017 at 2:39 AM Tom <tomas.kuchta.lists at gmail.com> wrote:
>>
>> > There are probably other USB power banks which can be charged and
>> > discharged together. Here are two examples:
>> > https://www.amazon.com/TeckNet-Universal-16750mAh-Output-PowerZen/dp/B0
>> > 0FAU7ZB2/ref=pd_cp_107_1?_encoding=UTF8&pd_rd_i=B00FAU7ZB2&pd_rd_r=0JMM
>> > HXMXK7RYWY9K361K&pd_rd_w=712hM&pd_rd_wg=6mOCV&psc=1&refRID=0JMMHXMXK7RY
>> > WY9K361K
>> > <https://www.amazon.com/TeckNet-Universal-16750mAh-Output-
>> PowerZen/dp/B00FAU7ZB2/ref=pd_cp_107_1?_encoding=UTF8&pd_rd_
>> i=B00FAU7ZB2&pd_rd_r=0JMMHXMXK7RYWY9K361K&pd_rd_w=
>> 712hM&pd_rd_wg=6mOCV&psc=1&refRID=0JMMHXMXK7RYWY9K361K>
>> > https://www.amazon.com/PowerTitan-19200mAh3-Port-Portable-External-Tech
>> > nology/dp/B01B534D4Y/ref=sr_1_1?s=wireless&srs=5713662011&ie=UTF8&qid=1
>> > 491729627&sr=1-1
>> > <https://www.amazon.com/PowerTitan-19200mAh3-Port-Portable-
>> External-Technology/dp/B01B534D4Y/ref=sr_1_1?s=wirele
>> ss&srs=5713662011&ie=UTF8&qid=1491729627&sr=1-1>
>> > Based on recommendation from this guy:
>> > http://raspi-ups.appspot.com/en/index.jsp He used older model which is
>> > no longer available.
>> > I wonder how smart is the circuit in avoiding the charge/discharge
>> > battery cycles when the power is on - it relates to the battery life.
>> > Tomas
>> > On Sat, 2017-04-08 at 18:57 -0700, Chuck Hast wrote:
>> > > On Sat, Apr 8, 2017 at 3:42 PM, Tom <tomas.kuchta.lists at gmail.com>
>> > > wrote:
>> > >
>> > > > dd nor rsync alone will not be able to do full backup of running
>> > > > computer (RPi).
>> > > >
>> > >
>> > > That was what I figured, just wanted to make sure.
>> > >
>> > >
>> > > > The best course of action is to separate the OS from your data -
>> > > > whatever your RPi is normally writing - then backup each
>> > > > separately.
>> > > >   * When you separate the data, you could even store it off the RPi
>> > > > avoiding need for local data backups on RPi altogether.
>> > > >
>> > >
>> > > The drive has two partitions on it /boot and /.  /boot is a vfat, the
>> > > rest
>> > > of
>> > > it is ext4. I supposed that I could stop the service (weather data
>> > > capture)
>> > > back up the files that are critical to the weather station.After the
>> > > back up
>> > > is done start the service again. Maybe store them on a jump drive and
>> > > after the station service is back up and running ship them off to the
>> > > location
>> > > I will keep the back ups in. I figure that I could do the back up in
>> > > the wee
>> > > hours of the morning.
>> > >
>> > >
>> > > >   * If you want to keep the data on RPi, you could back it up by
>> > > > rsync
>> > > > to separate media (USB) or a network storage
>> > > >   * You cannot back up the OS while you are using it - that is why
>> > > > this
>> > > > is normally done on a separate computer. It is easier and faster
>> > > > than
>> > > > booting your RPi from USB or network and then doing the backup.
>> > > >   * Perhaps the OS does not need to be backed up often or not at
>> > > > all as
>> > > > you could simply create separate OS image, even on another SD card
>> > > > attached to your Pi.
>> > > >
>> > >
>> > > All I really need for recovery is the WeeWx db file, WeeWx config
>> > > file,
>> > > skins
>> > > file and the nginx configuration. I could actually keep a separate
>> > > image and
>> > > just insert the latest files and quickly swap out the bad SD card.
>> > > That
>> > > should
>> > > take care of it.
>> > >
>> > > I should be able to automate the OS configuration, so that I just run
>> > > a
>> > > script
>> > > it looks for the SD card, installs the OS makes sure that the
>> > > parameters
>> > > that
>> > > I set manually on installation are set correctly, probably can
>> > > automate the
>> > > whole process.
>> > >
>> > >   * Your backup target/media could be another SD card connected to
>> > > RPi
>> > > > in a SD card reader, that way you could just swap the cards ....
>> > > > Thinking outside of a box - perhaps you need little UPS for your Pi
>> > > > to
>> > > > avoid regular data corruption altogether. There are some USB
>> > > > charging
>> > > > batteries which can be charged and used both at the same time (most
>> > > > can
>> > > > be either charged or used, not both).  Modest battery could keep
>> > > > your
>> > > > Pi running for hours.
>> > > >
>> > >
>> > > I have been looking for a battery pack that will allow me to let it
>> > > float
>> > > on the
>> > > powersupply until power goes away, then it takes over. So far all of
>> > > them
>> > > that
>> > > I have looked at will not switch between charge/float/discharge. I
>> > > have seen
>> > > a couple that plug into the pin field on the RPi, but I am trying to
>> > > keep
>> > > the
>> > > case clean. I have built up a power supply with a battery on it, and
>> > > a heavy
>> > > duty USB dual port power cartridge that supplies the power I need for
>> > > the
>> > > RPi and the WX station console. It is kind of big, I am certainly
>> > > looking
>> > > for
>> > > one of the power pack batteries that does not care if it is being
>> > > charged or
>> > > not.
>> > >
>> > >
>> > > > I hope that this is pointing you in the right direction to your
>> > > > particular circumstances.
>> > >
>> > >
>> > > Yes it confirmed most of what I was already suspecting. Now if I can
>> > > just
>> > > find a nice clean battery pack that meets the above requirement.
>> > _______________________________________________
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>> >
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>
>
>
> --
>
> Chuck Hast  -- KP4DJT --
> Glass, five thousand years of history and getting better.
> The only container material that the USDA gives blanket approval on.
>
>
>

-- 

Chuck Hast  -- KP4DJT --
Glass, five thousand years of history and getting better.
The only container material that the USDA gives blanket approval on.