5.4 hangs in UFS

[Matthew Dillon]

This feels more like an issue with the I/O and not with UFS specifically.
But since you tried two different storage devices it couldn't be that.
Perhaps there is a power or overheat issue on the system.

-Matt

On Sun, Feb 10, 2019 at 1:42 PM Eric Melville <eric at rigelfore.com> wrote:

> Hello there,
>
> After installing 5.4 my system has been getting stuck in UFS, apparently
> in softdeps.
>
> At first I was faulting the -j12 buildworld, but then saw it in lower
> parallel counts, and
>
> eventually saw it when looping buildworld with no -j option at all. Then I
> was faulting
>
> my fast new NVME but eventually factored that out too by changing back to
> an old
>
> hard drive. In any case, the faster the hardware and the more work
> running, the
>
> more quickly and easily this seems to reproduce.
>
>
> Typically during the phase that removes old output, the build will hang
> indefinitely.
>
> Some processes continue to run but new ones never get going, and the old
> world
>
> clean never makes any progress. For example ssh to the host in this state
> would
>
> succeed to connect and authenticate, but the new shell never seems to run.
>
>
> I suppose I should try disabling softdeps next.
>
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