Re: [beagleboard] Re: SD card errors on hard reboot

[evilwulfie]

you cannot just do a hard shutdown you must use a shutdown now command
you always risk file system corruption if you do not

On 4/4/2018 8:24 AM, Tarmo Kuuse wrote:
> On Monday, 19 March 2018 23:55:04 UTC+2, Troy Weber wrote:
>
> Hello!
>
> I have an application running on the Beaglebone Black. It runs
> from the eMMC because we need to mount a blank SD card and
> occasionally store data or video on the external SD card. Here are
> some details to jog ideas:
>
>   * using a Bealgebone black
>   * connected to a powered hub and running 2 led strips and 1 camera
>   * made a custom cape/shield that allows us to interface with
>   o an RGB button
>   o a 16x2 char lcd
>   o an optically isolated relay module
>   * the relay module runs a solenoid circuit (in which I'm
> currently debugging the need for a flyback diode)
>   * the SD card is mounted using */etc/fstab* with the line
> */dev/mmcblk0p1 /media/sd auto
> auto,nofail,user,dmask=022,fmask=111 0 0*
>   * SD cards are inexpensive and found
> here: 
> https://www.amazon.com/gp/product/B00WUCNGVQ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
> 
> 
>
> My application is writing files to the SD card only on certain
> occasions during which the Beaglebone will not be hard-rebooted.
> However, it will be hard-rebooted (and the application started by
> systemd on next boot) as a means of shutting it down.
>
> The problem is that I've recently began to discover issues with
> the blank SD card on next boot after a hard reboot. For a short
> time I can *touch* and write *vim* files on the card just fine.
> Once I start up the node.js program, part way through it complains
> about the SD card being read-only. From then on I cannot
> *touch* or *vim* files anymore. So I reformat the card and copy
> the configuration files back on. I've noticed that one of my
> configuration files is chopped short.
>
> Here are some things I've tried and intend to try:
>
>   * have tried
>   o removing the power to the hub which seemed to be
> back-powering the BBB (still fails on reboot)
>   o stopping the program that writes files entirely (still
> fails on reboot)
>   * intend to try
>   o writing the configuration files elsewhere (on the eMMC for
> example)
>   o better SD cards
>
> In the meantime, any ideas?
>
>
> What's the file system on the SD card? FAT? ext4?
>
> --
> Tarmo
> -- 
> For more options, visit http://beagleboard.org/discuss
> ---
> You received this message because you are subscribed to the Google
> Groups "BeagleBoard" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to beagleboard+unsubscr...@googlegroups.com
> .
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/beagleboard/ea6a9f55-220d-40c0-8781-5dfffee87178%40googlegroups.com
> .
> For more options, visit https://groups.google.com/d/optout.

-- 
For more options, visit http://beagleboard.org/discuss
--- 
You received this message because you are subscribed to the Google Groups 
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to beagleboard+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/beagleboard/46947563-9e92-ca7e-a0ce-094b6e449db2%40gmail.com.
For more options, visit https://groups.google.com/d/optout.

[beagleboard] Re: SD card errors on hard reboot

[Tarmo Kuuse]

On Monday, 19 March 2018 23:55:04 UTC+2, Troy Weber wrote:
>
> Hello!
>
> I have an application running on the Beaglebone Black. It runs from the 
> eMMC because we need to mount a blank SD card and occasionally store data 
> or video on the external SD card. Here are some details to jog ideas:
>
>- using a Bealgebone black
>- connected to a powered hub and running 2 led strips and 1 camera
>- made a custom cape/shield that allows us to interface with
>   - an RGB button
>   - a 16x2 char lcd
>   - an optically isolated relay module
>- the relay module runs a solenoid circuit (in which I'm currently 
>debugging the need for a flyback diode)
>- the SD card is mounted using */etc/fstab* with the line */dev/mmcblk0p1 
>/media/sd auto auto,nofail,user,dmask=022,fmask=111 0 0*
>- SD cards are inexpensive and found here: 
>
> https://www.amazon.com/gp/product/B00WUCNGVQ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
>
> My application is writing files to the SD card only on certain occasions 
> during which the Beaglebone will not be hard-rebooted. However, it will be 
> hard-rebooted (and the application started by systemd on next boot) as a 
> means of shutting it down.
>
> The problem is that I've recently began to discover issues with the blank 
> SD card on next boot after a hard reboot. For a short time I can *touch* 
> and write *vim* files on the card just fine. Once I start up the node.js 
> program, part way through it complains about the SD card being read-only. 
> From then on I cannot *touch* or *vim* files anymore. So I reformat the 
> card and copy the configuration files back on. I've noticed that one of my 
> configuration files is chopped short.
>
> Here are some things I've tried and intend to try:
>
>- have tried
>   - removing the power to the hub which seemed to be back-powering 
>   the BBB (still fails on reboot)
>   - stopping the program that writes files entirely (still fails on 
>   reboot)
>- intend to try
>   - writing the configuration files elsewhere (on the eMMC for 
>   example)
>   - better SD cards
>
> In the meantime, any ideas?
>

What's the file system on the SD card? FAT? ext4?

--
Tarmo

-- 
For more options, visit http://beagleboard.org/discuss
--- 
You received this message because you are subscribed to the Google Groups 
"BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to beagleboard+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/beagleboard/ea6a9f55-220d-40c0-8781-5dfffee87178%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.