Benny Siegert <bsiegert%gmail.com@localhost> writes: > My Raspberry Pi 4 has a broken SD card, so I installed the latest > -current snapshot (9.99.106) onto a USB stick, only using the UEFI > loader on the SD card. This works generally fine but after a few hours > of load on the system (compiling stuff, for example), USB stick > eventually becomes unresponsive. Any processes using it either hang or > get an I/O error. The error messages on console 1 are an endless > stream of > > umass0: BBB reset failed, TIMEOUT > umass0: BBB bulk-in clear stall failed, TIMEOUT > umass0: BBB bulk-out clear stall failed, TIMEOUT > > A few questions, if I may: > > - Is this a problem with the stick, or with the Pi? > - Any ideas so that this no longer occurs? > - Do other folks have the same issue with USB-attached storage? I have a RPI3 running netbsd-9 (and -8 before that) with / on uSD and a 500G USB SSD: umass0 at uhub1 port 4 configuration 1 interface 0 umass0: Samsung (0x4e8) Portable SSD T5 (0x61f5), rev 2.10/1.00, addr 5 umass0: using SCSI over Bulk-Only sd0 at scsibus0 target 0 lun 0: <Samsung, Portable SSD T5, 0> disk fixed sd0: 465 GB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors bits on the SSD are munged regularly. This has been solid for several years, with very occasional hangs, not yet diagnosed. Maybe 2 per year, maybe less. I had another RPI3, with a 4T seagate spinning rust on USB. Again not system disk. That was totally solid. (But it did a lot less than the other one; basically it watched a UPS and reported over MQTT, and let me put backup bits on the hard drive, and that was about it.) I would say your problems are likely due to one of: - USB stick is iffy - power supply is iffy - something else on USB bus is troubled and less likely due to a kernel bug but I wouldn't rule it out. > Lastly, is there a better way in general to have storage on an RPi? SD > cards are not reliable in the long (or even medium) term. USB sticks > are unreliable. Is spinning rust the answer? Or some sort of special > storage attachment hat? Yes. A USB-attached "SSD", which appears to be a far more reliable beast than a "stick". Yes I know this is form factor, but they seem to be different types of products. I don't want to be a samsung fanboy, but the T5 has been good. I have a second one that I use as a root disk for installation/rescue/etc.
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