Re: tstile in less than a day

[Martin Husemann <martin%duskware.de@localhost>]

On Sun, Mar 10, 2019 at 03:35:27PM +0000, Sad Clouds wrote:
> When you say "some driver bug" are you referring to network card driver
> or something else, like NFS subsystem?

In the cases I saw it were bugs in network drivers, leading to reproducable
loss of big packets or similar. Using TCP mounts usually worked around
it.

But whatever the actual bug here is, when NFS is involved we need proper
pkt traces to analyze it. You can only see things tstile on a vnode
lock in the kernel backtraces or lockdebug output, but you can not see
why the IO does not complete and the lock is not freed.

Martin