Lockups during hammer cleanup

[Matthew Dillon]

I've been able to reproduce the buildworld lockup, this is probably the
same thing.  I hope to track it down today.

-Matt

On Fri, Jul 22, 2016 at 11:53 AM, Tim Darby <t+dfbsd at timdarby.net> wrote:

> I'm seeing this on two different machines for the same hammer filesystem
> (one machine is the master, the other is the slave for that fs):
>
> hammer -v cleanup /volumes/BACKUP2/pfs/media
> cleanup /volumes/BACKUP2/pfs/media - handle PFS #1 using
> /var/hammer/volumes/BACKUP2/pfs/media
>            snapshots - skip
>                prune - skip
>            rebalance - skip
>              reblock - run
>     hammer -c /var/hammer/volumes/BACKUP2/pfs/media/.reblock-1.cycle -t
> 300 reblock-btree /volumes/BACKUP2/pfs/media
>
> <machine locks up here, nothing on the console>
>
> I was able to get it to complete eventually by reducing the time for
> reblock and recopy to 30 seconds. If it goes longer than that, it locks.
>
> Tim
>
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