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SD Card corruption again, again

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  • undefined
    gnydick
    last edited by 6 Mar 2021, 22:45

    I've gone through 8 sd cards in the last year. I've owned 5 D2 over the last few years on different machines and they've all chewed through memory cards.

    I'm starting to get really upset, because now I JUST finished my tool changer setup and as soon as I went to print my tool alignment calibration pattern, poof! No filesystem on the card.

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      Phaedrux Moderator
      last edited by 6 Mar 2021, 23:10

      What kinds of cards? I don't think I've heard of anyone going through that many before.

      Z-Bot CoreXY Build | Thingiverse Profile

      undefined 1 Reply Last reply 6 Mar 2021, 23:21 Reply Quote 0
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        gnydick @Phaedrux
        last edited by 6 Mar 2021, 23:21

        @Phaedrux Samsung 32GB class 10, not to mention every single card that has come with the boards.

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          Phaedrux Moderator
          last edited by 6 Mar 2021, 23:23

          Do you use logging to the SD card?

          https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M929_Start_stop_event_logging_to_SD_card

          Z-Bot CoreXY Build | Thingiverse Profile

          undefined 1 Reply Last reply 7 Mar 2021, 04:25 Reply Quote 0
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            gnydick @Phaedrux
            last edited by 7 Mar 2021, 04:25

            @Phaedrux I do.

            undefined 1 Reply Last reply 7 Mar 2021, 05:22 Reply Quote 0
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              Phaedrux Moderator
              last edited by 7 Mar 2021, 05:17

              That's a lot of write wear to the SD card if used long term. If it's something you want to continue using consider getting an industrial SD card with higher write endurance.

              Z-Bot CoreXY Build | Thingiverse Profile

              undefined 1 Reply Last reply 7 Mar 2021, 07:44 Reply Quote 0
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                arhi @gnydick
                last edited by 7 Mar 2021, 05:22

                @gnydick said in SD Card corruption again, again:

                @Phaedrux I do.

                It is much cheaper to setup an UPS than to have logging turned on always

                undefined 1 Reply Last reply 7 Mar 2021, 06:21 Reply Quote 0
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                  Veti @arhi
                  last edited by 7 Mar 2021, 06:21

                  @arhi

                  what does an ups have to do with logging?

                  undefined 1 Reply Last reply 7 Mar 2021, 15:18 Reply Quote 0
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                    gnydick @Phaedrux
                    last edited by 7 Mar 2021, 07:44

                    @Phaedrux it's not that much writing, really. the cards have write leveling. considering it's a 32GB card, it will take a VERY long time to wear down the card.

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                      gloomyandy
                      last edited by gloomyandy 3 Jul 2021, 09:13 7 Mar 2021, 09:12

                      How corrupt are the cards? Can they be reformatted and reused or are they unusable once they fail?

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                        Dr_Ju_Ju
                        last edited by 7 Mar 2021, 10:35

                        Silly question, but where are you buying them ?? I've had a couple permanently fail, and even though they were supposedly 'branded' items, I doubt they were as they were a lot cheaper than others.

                        Also try connecting them to a PC, whether Windows or Linux, & re-formatting them, I've resurrected a few that way....

                        Julian,

                        Old goat, learning new things….

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                        • undefined
                          arhi @Veti
                          last edited by 7 Mar 2021, 15:18

                          @Veti said in SD Card corruption again, again:

                          @arhi

                          what does an ups have to do with logging?

                          I don't see any other reason to have logging "always-on" except if you want to have data to continue after power loss. This is better solved by UPS. For any other reason, it would make sense to log from time to time to check issues if you have them, but not always.

                          32G is a big card, you are probably writing over and over the same place if they are getting worn out quickly (many will lock the card for writing into read-only mode when they encounter write issues and cant remap the blocks any more, many will not fail on writes but silently ignore them). Possible solution would be to either never delete log files and only create new ones or always append to a log file and not truncate it ever. I have no clue how M929 actually work, never had a need for it, I have enough issues with crappy SD cards to force them to take the logging data too... tried many years ago with marling and gave up after few dead cards

                          undefined 1 Reply Last reply 7 Mar 2021, 15:57 Reply Quote 0
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                            Veti @arhi
                            last edited by 7 Mar 2021, 15:57

                            @arhi

                            powerloss recovery is M911 and not debugging.
                            those are two different things.

                            undefined 1 Reply Last reply 7 Mar 2021, 16:52 Reply Quote 0
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                              arhi @Veti
                              last edited by 7 Mar 2021, 16:52

                              @Veti yes, my mistake, you are only logging basic stuff (Start, stop ..) that should not eat up the SD card, not enough "traffic" ..

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                                Veti
                                last edited by 7 Mar 2021, 17:44

                                i think it logs every move. so its a lot

                                undefined 1 Reply Last reply 7 Mar 2021, 18:24 Reply Quote 0
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                                  gnydick @Veti
                                  last edited by 7 Mar 2021, 18:24

                                  @Veti it does not log every move. that would be silly.

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                                    Phaedrux Moderator
                                    last edited by 7 Mar 2021, 19:39

                                    What level of logging are you using? What is the command used?

                                    Z-Bot CoreXY Build | Thingiverse Profile

                                    undefined 1 Reply Last reply 8 Mar 2021, 04:46 Reply Quote 0
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                                      gnydick @Phaedrux
                                      last edited by 8 Mar 2021, 04:46

                                      @Phaedrux
                                      M929 P"eventlog.txt" S1

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                                        jrockland
                                        last edited by 8 Mar 2021, 04:52

                                        The problem doesnt come from the boards.
                                        I use multiple duet3d boards with all kind of sd cards and never had that issue.
                                        You might have fakes from amazon/ebay: They look 100% like the real one but are 8g instead of 32g, and as the board think they are 32g it keep writing and destroy the card.

                                        I even once bough a fake from walmart. No joke. It is hard to find good stuff now.

                                        undefined 1 Reply Last reply 8 Mar 2021, 04:53 Reply Quote 0
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                                          gnydick @jrockland
                                          last edited by 8 Mar 2021, 04:53

                                          @jrockland i don't think < 1GB would do that.

                                          undefined 1 Reply Last reply 8 Mar 2021, 05:10 Reply Quote 0
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