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  • #22938

    gretske
    Participant

    I am having an odd problem, and need some advice. I got my OpenSprinkler Pi board about 3 weeks ago. I downloaded the SD image and connected everything up. It was working well, until one day, it just stopped. So I logged in via SSH and started looking around. When I would do simple things, like cat a file, it would freeze up. I took it out of service and reloaded the SD and started over. Again, it worked for a few days and froze again. So, I tried a different SD card and a different RPi. It worked for about a week, and the same thing happened. I tried the switch program and got this:

    [email protected] ~ $ sudo /home/pi/select_program
    1) interval_program
    2) sprinklers_pi
    3) quit
    Select the program: 1
    Selected interval_progarm
    [….] Stopping : sprinklers_piNo sprinklers_pi found running; none killed.
    update-rc.d: using dependency based boot sequencing
    insserv: fopen(.depend.stop): Read-only file system
    update-rc.d: using dependency based boot sequencing
    insserv: fopen(.depend.stop): Read-only file system
    /etc/init.d/ospi: 141: /etc/init.d/ospi: Syntax error: end of file unexpected (expecting “)”)

    (And, this takes about 3 minutes to run to completion.)

    If I cat the ospi file the last few lines are:

    #do_reload
    #log_end_msg $?
    #;;
    restartcat: ospi: Input/output error

    It appears that the RPi is running very, very slow. If I cat a file, it takes several seconds to respond, like 30 seconds or more. Also, I set the time via SSH, but the system time on the SPi web browser still shows 4:23 AM, the time that the system appears to have frozen. I have rebooted, but nothing changes.

    Any idea what is going on here? I am baffled.

    -gene

    #27069

    gretske
    Participant

    I went to the /root directory and it is completely empty! I think this may be the problem. Somehow all the dot files and config files got zilches. The question is, what caused this? Any ideas?

    -gene

    #27070

    scottsh
    Participant

    Is there anything obvious going on in /var/log/syslog? If the filesystem has gone read-only, the last thing in there might be some clue.

    Also, the internal kernel log is still active even if it can’t write to syslog. Check that out using dmesg.

    I usually see a filesystem become read-only if there is a corruption of some kind. I’m not sure what would cause that though.

    #27071

    gretske
    Participant

    OK, I re-burned an SD card and re-initialized everything. As long as I shut it down in a proper manner (shutdown -h 0), it comes back up with no problem. However, if I pull the power too soon, it corrupts the SD disk. I understand the need to do this in a proper manner. HOWEVER, there are power glitches in the real world, especially in a crawl space where the OpenSprinkler Pi is located. Compounding this is the fact that the power connection to the Pi is 24 VAC. I suppose I could put a UPS on the 120 side, but that is not a good environment for it, and frankly a waste of a UPS.

    Any suggestions? What have others done to avoid this problem?

    Thanks for the assistance!

    -gene

    #27072

    scottsh
    Participant

    Hmm, I’ve pulled the power and reset my OSPi many, many times with no issue like this.

    Is there some write caching going on perhaps that should be turned off?

    #27073

    gretske
    Participant

    I don’t know. I am running the standard SD image that I downloaded. The only thing I did was to set up networking.

    I have had problems in the past with SD cards. I used to have a 64GB half size card for my MacBook Pro, but kept getting corrupted, so I quit using.

    Could it be my magnetic personality?

    I’m going to keep digging around. Thanks for the input.

    -gene

    #27074

    Ray
    Keymaster

    Did you try a few different SD card or just the 64GB card? You may want to try another one. Like scottsh said, I have also unplugged power from RPi many times and have not encountered any SD corruption issue. I do think some cards may be more prone to corruption.

    #27075

    gretske
    Participant

    Ray –

    I am not using the 64GB SD card, I just mentioned it. I have two different Kingston 16 GB cards and am now trying the second one to see if I have the same problem. So far, it is working OK, but I have not tried disconnecting the power. I will do that today.

    -gene

    #27076

    gretske
    Participant

    I bought a new 8GB card and burned it with the SPi image. I have unplugged it and moved it several times. I think I had a bad SD card.

    -gene

    #27077

    gretske
    Participant

    Ray –

    The program started this morning as scheduled. I have not hooked it back up to the actual valves, but it was running and switching as it should. There was one anomaly, however. When I tried logging onto the browser interface, I could not get it to respond. I finally logged on via SSH, and shortly after I logged in, the browser finally responded. Is this some setting that I am missing? I can’t find a “sleep” setting or anything that would cause the Apache server to pause.

    Any thoughts?

    -gene

    #27078

    Ray
    Keymaster

    Sorry, this is a bit beyond my knowledge. I will see if Dan or Samer has a comment here.

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