RPi I/O Tasks Indeterminately Failing

uberXMHF uobject Collection Rich-Guest OS
1

I am experiencing indeterminate failures on the Raspberry Pi 3 when running “long-duration” I/O tasks (e.g., downloading large files, compressing large files). No consistent errors are reported (occasionally a seg fault, generally silent); all failures return to the shell.

I built a fresh copy using the develop branch, following the documentation on GitHub (no flags were specified for ./configure).

2

When you say “long-duration” I/O tasks, are you talking of minutes or hours? Can you share the characteristics of your downloads and compression so I can try and replicate on my test-bed?

3

long-duration==minutes (tens of seconds).

Network examples: apt-get update, git clone repo, docker pull ubuntu. These do not complete successfully (higher success on smaller file sizes).
generate large file (1GB): dd bs=10240 count=102400 < /dev/urandom > myRandomfile
compression: tar -czvf out.tar.gz myRandomfile

  • when trying to untar the file, get a unexpected end of file error (I assume that this is because the compression failed prior to completion). I did not experience errors with a smaller (10MB) file.
4

@Cap, I have pushed a changeset to the develop branch that might address some of the stability issues you are experiencing.

I tried it on my test bed and all the I/O tasks you mention run to completion.

Can you pull the latest changes from the develop branch and test on your side?

5

I’m not experiencing any of the stability issues mentioned previously when using this changeset.

Thanks!

6

@Cap, this changeset has been merged into master as part of release v5.0.