Messages in this thread | | | Date | Fri, 3 Nov 2006 14:31:46 +0100 (CET) | From | Mikulas Patocka <> | Subject | Re: New filesystem for Linux |
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>>> I am fully aware the counters are effectively 48-bit. If they were >>> just 32-bit, you would likely have hit the problem yourself already. >> >> Given the seek time 0.01s, 31-bit value would last for minimum time of 248 >> days when doing only syncs and nothing else. 47-bit value will last for >> reasonably long. > > So you can at most do one transaction per drive seek? That would > definitely solve the overflow case, but hardly sounds like a > high-performance filesystem. :)
Really it can batch any number of modifications into one transaction (unless fsync or sync is called). Transaction is closed only on fsync/sync, if 2 minutes pass (can be adjusted) or when the disk runs out of space.
Mikulas
Mikulas
> Jörn > > -- > Data expands to fill the space available for storage. > -- Parkinson's Law >
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