[rescue] ZFS Merkle trees/git graph integrity - Re: Has freshmeat.net disappeared forever?

[Peter Corlett]

On Wed, Jun 25, 2014 at 09:30:21AM +0100, Mark Benson wrote:
> On 25/06/2014 08:26, Peter Corlett wrote:
>> I'd use it on my desktop -- well, laptop -- but there's no reliable OSX
>> port. Time Machine is configured to store its backups on a remote ZFS volume
>> which is basically a small FreeBSD VM pretending to be a Time Capsule.
> I used to Time Machine to my Microserver (running OI and ZFS) but got fed up
> of OS X telling me the volume was corrupt every couple of months and
> restarting the backup set :\

> Anyone ever work out WTH that was?

Did you fill the Time Machine volume, were you using compression, and did it
fill the underlying zvol at the same time? Time Machine tries to resize its
sparsebundle to reflect how much space it believes is available in the
underlying volume, and ZFS is particularly unforgiving when it gets full.