On Wed, Mar 07, 2018 at 10:20:45AM +0100, J. Hannken-Illjes wrote:
> > On 6. Mar 2018, at 23:33, Manuel Bouyer <[email protected]> wrote:
> >
> > on an up-to-date netbsd-8 Xen3 i386PAE kernel I see hangs on tstile.
> > Hung processes shows the same pattern, they sleep in fstrans_start():
> <snip>
> >
> > This is reproductible, restarting my automatic test script hangs the
> > same way. This i plain ffs, no wapbl.
> >
> > Any idea ?
>
> Please enter DDB and "call fstrans_dump(0)" to see which thread blocks
> the transition (it will have "... shared N ..." with N > 0).
a pbulk build stalled out on a NetBSD-7 VM and I remembered this. :)
db{0}> call fstrans_dump(0)
Fstrans locks by lwp:
11537.1 (/) shared 2 cow 0
Fstrans state by mount:
0
db{0}> ps
PID LID S CPU FLAGS STRUCT LWP * NAME WAIT
[...]
11537 1 3 0 0 ffffa00069efea20 find tstile
[... and a whole bunch of processes stuck in tstile ...]
--
Aaron J. Grier | "Not your ordinary poofy goof." | [email protected]
"The price of reliability is the pursuit of the utmost simplicity. It
is a price which the very rich find most hard to pay." -- Tony Hoare
