HAMMER filesystem update - design document
dillon at apollo.backplane.com
Sat Oct 13 16:38:58 PDT 2007
:I hope this question has not been implicitly answered before, but how
:does Hammer handle quotas? Filesystems like XFS and ZFS maintain quota
:information internally so that a quotacheck after a system crash does
:not take ages. It seems to me that Hammer could manage quotas as a
:part of its cluster allocation strategy. Is this the case?
Theoretically a transaction id can be stored along with the quota state
and the quota state can be updated on the fly when a cluster gets
recovered. I wasn't planning on implementing quotas in HAMMER for 2.0
but it's definitely possible to do it without requiring a rescan.
<dillon at backplane.com>
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