Have you considered a flash friendly file system? UBIFS, JFFS2, YAFFS2, LogFS https://superuser.com/questions/248078/choice-of-filesystem-for-gnu-linux-on-an-sd-card Note: I haven't used them myself, but I'd be curious.
On Mon, May 10, 2021 at 2:38 PM Curt Lundgren <[email protected]> wrote: > I've set up a Pi 4 computer with 8 GB of RAM and a pair of 1080P displays > as a second place to sit. No Email, no chats of any kind, rather peaceful, > actually. It's running 64-bit Ubuntu, and except for an occasional > non-fatal complaint from one application or another, it runs rather well. > > It's booting from a 32 GB high-endurance micro SD. The problem I've > observed with RPi computers in the past is that they destroy their boot > media. Most, if not all, micro SD cards do not have wear leveling, and so > the constant logging and other activity eventually 'wears a hole' in the > media and it fails. This didn't keep my original single-core 700 MHz Pi > from setting a personal runtime record of 1503 days, but it would not boot > after power was restored. Added a new high-endurance micro SD card to it, > and it came right back up. > > Back in the Watkins days we were using Pi3 computers for door access > control. Everything was rock-solid reliable - until the boot media would > fail. That's when I hit on the idea of using the high-endurance cards. > I've never had one of those fail, knock on wood. > > I still like the idea of wear leveling, so I bought a 500 GB NVMe drive > and a USB 3+ enclosure. It's bloody fast when connected to a Mac laptop, > over 900 MB/sec both read and write. I copied the Ubuntu boot image onto > it and plugged it into the PI4. I did have to flash the Pi firmware so it > will boot either from an SD card or external USB media. The Pi boots up > and runs beautifully - for 10 to 20 minutes, then it just hangs. Power > cycle and it's good for another 10 - 20 minutes. > > Is it a power issue? I have a spare USB 3.0 powered hub, so I plugged the > new drive into the hub and the hub into the Pi. It looks silly, with the > hub being substantially larger than the computer, but it boots up, runs > beautifully for 10 - 20 minutes - and hangs. I don't think the trouble can > be blamed on power supply issues, and I'm stumped as to what else might be > going on. I'm back on the high-endurance micro SD card, but would like > very much to have the added capacity and wear leveling the SSD offers. > > Speed through the hub was dismal at about 32 MB/sec., pretty much USB 2.0 > performance, but that would have been OK if the Pi would run and not lock > up. > > Does anyone have any thoughts as to what might be going on here? > > Thanks > Curt Lundgren > > -- > -- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nlug-talk?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/nlug-talk/CADPPtrqCTBaYf4g2BU0g6M7nwg9da-qsXSBAcd72kkZrZ7sVhA%40mail.gmail.com > <https://groups.google.com/d/msgid/nlug-talk/CADPPtrqCTBaYf4g2BU0g6M7nwg9da-qsXSBAcd72kkZrZ7sVhA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- -- You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en --- You received this message because you are subscribed to the Google Groups "NLUG" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/nlug-talk/CA%2BKhHxLqUw_QTNF35MGgkBGLx1tC5jV4NpCJYLZ%3DWDgfaDJRSg%40mail.gmail.com.
