Cleanup of slave PFSes
dillon at apollo.backplane.com
Mon Dec 2 17:52:01 PST 2013
:I have trouble understanding how daily cleanup jobs interact with slave
:PFSes being updated with
It is a bit confusing and could use some work. I think the hammer
cleanup directive currently only scans mounted PFS's, so if the PFS
is not mounted it winds up not getting cleaned up.
hammer cleanup can be called manually with a path to the PFS the cleanup
is desired on. Typically that would be a "<mountpt>/pfs/<pfsname>" path.
The PFS does not have to be mounted in that case.
I consider this a bug actually. The hammer cleanup command should iterate
through available PFS's and clean them up whether they are mounted or
not. The feature was added before slave PFS's were really operational
so the assumption was that all the PFS's would be null-mounted. But
slave PFS's are not usually null-mounted (because null-mounting a slave
PFS will basically just mount the current snapshot of it and not track
changes made to it after the mount).
The easiest work-around is to create a cron job which runs once or twice
a day which does 'hammer cleanup <path_to_pfs>'.
More information about the Users