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A este jednu zakernu otazku. Je to ZFS vo FBSD binarne kompatibilne so ZFS v Solarise? Ze odpojim disk v jednom OS, pripojim v druhom a precitam data?

Ked sa pred par mesiacmi na nete pisalo o tom, ze ZFS vo FBSD bude, tak spominali, ze VFS vo FBSD vie pracovat len so 64bit integermi, takze cele ZFS bude implementovane v tychto rozmeroch a nie v 128bit, ako v Solarise. Co by samozrejme sposobila, ze binarna kompatibilita nebude.

Teraz, ked s velkou pompou oznamovali, ze ZFS vo FBSD uz je, tak na tuto temu ani jedna zmienka.

Ako sa teda maju veci?




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mono
 mono      23.08.2007 - 01:33:35 , level: 1, UP   NEW
"Please note that the '128-bitness' of ZFS currently only comes into play
in the on-disk format, and the allowed size of the storage pool. This
should be very easy to maintain compatability with. However, each
filesystem is currently limited to 64-bits, due largely to the lack of
128-bit support in the POSIX interfaces. So there's very little 128-bit
code floating around except at the SPA layer, and as long as you have an
unsigned 64-bit type there shouldn't be any problems at higher layers."

Eric Schrock, Solaris Kernel Development

inymi slovami, aj (open)solaris ZFS je v reale limitovany na 64bit, kedze momentalne neexistuje 128bit-ovy integer ;)

osobne nevidim dovod, preco by to nemalo byt kompatibilne.

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next
 next      23.08.2007 - 19:18:48 , level: 2, UP   NEW
to este neznamena, ze to je kompatibilne :).
dokaz neexistencie vs. neexistencia dokazu :)