Messages in this thread | | | From | Alexander Zarochentcev <> | Date | Tue, 5 Nov 2002 11:49:16 +0300 | Subject | Re: [BK][PATCH] Reiser4, will double Linux FS performance, pleaseapply |
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reiser writes: > Alexander Zarochentcev wrote: > > > > > > > > >In reiser4 allocation of disk space is delayed to transaction commit. It > > > >is not possible to estimate precisely amount of disk space that will be > > > >allocated during commit, and hence statfs(2) results are not updated > > > >until one does sync(2) (forcing commit) or transaction is committed due > > > >to age (10 minutes by default). > > > > > > > > > > > > > > > The above is badly phrased, and the behavior complained of is indeed a > > > bug not a feature. Please fix. > > > > > > statfs should be updated immediately in accordance with estimates used > > > by the space reservation code, and then adjusted at commit time in > > > accordance with actual usage. > > > >We should not do that unless we implement forcing of commits at out of free > >space situation. > > > I thought we had agreed to do forcing of commits at out of free space > quite some time ago? In any event, we should do forcing of commits at > out of free space. Yes?
we will control this by a block allocator flag, we set it when we can close current transaction. I think for most cases it will be set.
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