hammer cleanup coredumps

[elekktretterr@xxxxxxxxxxxxxx]

This is happening on master.

Steps to reproduce(possibly)

1) Create a couple of pfs-masters inside another pfs like this by accident.

ie hammer pfs-master /usr/something

Receive a warning.

2) rm /usr/something

3) go to /pfs and create symlink to those PFSs you created above.

4) hammer pfs-destroy them

5) now create them properly: hammer pfs-master /pfs/something

6) Mount them

7) Run hammer cleanup

I get this

cleanup /                    - handle PFS #0 using /var/hammer/root
           snapshots - skip
               prune - skip
           rebalance - skip
             reblock - skip
              recopy - skip
cleanup /var                 - handle PFS #1 using /var/hammer/var
           snapshots - skip
               prune - skip
           rebalance - skip
             reblock - skip
              recopy - skip
cleanup /tmp                 - handle PFS #2 using /var/hammer/tmp
           snapshots - disabled
               prune - skip
           rebalance - skip
             reblock - skip
              recopy - skip
cleanup /usr                 - handle PFS #3 using /var/hammer/usr
           snapshots - skip
               prune - skip
           rebalance - skip
             reblock - skip
              recopy - skip
              (null) - Segmentation fault (core dumped)

some hammer info:

Volume identification
        Label               ROOT
        No. Volumes         1
        FSID                e308fe1f-e8c4-11de-a031-01215abc3429
        HAMMER Version      4
Big block information
        Total          106486
        Used              545 (0.51%)
        Reserved           69 (0.06%)
        Free           105872 (99.42%)
Space information
        No. Inodes     150802
        Total size       832G (893269311488 bytes)
        Used space       4.3G
        Reserved space   552M
        Free space       827G
PFS information
        PFS-Id  Mode    Snaps  Mounted-on
             0  MASTER      1  /
             1  MASTER      1  /var
             2  MASTER      1  /tmp
             3  MASTER      1  /usr
             4  MASTER      1  /home
             5  MASTER      1  /usr/obj
             6  MASTER      1  /var/crash
             7  MASTER      1  /var/tmp
             8  MASTER      1  /usr/aubill
             9  MASTER      1  /usr/pkg/pgsql


Petr