[Bug 194513] zfs recv hangs in state kmem arena

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194513

--- Comment #16 from Palle Girgensohn <girgen at FreeBSD.org> ---
We are seeing this regularly on a machine with
34 GB RAM
34 TB storage JBOD large array (ZFS)
*no* SSD ZIL or L2Arc.

ssh othermachine zfs send fs | zfs receive fs

sometimes hangs. Not often, perhaps once a month or so.

Always in kmem arena just like mgoroff at quorum.net describes above.

I tried Stevens program to allocate memory, but it still stuck.

This is backup machine, so I can always just reboot, unless someone has an idea
about something to try first, that could perhaps explain more about what's
happening?

Palle

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