mke2fs + 3.2 Diskos

[Alexios Chouchoulas]

On Tue, 13 Jan 1998, Fotis Andritsopoulos wrote:

> Hi ...
>    Otan kanw se enan disko 3.2 GB mke2fs, afou meta ton kanw mount sto df
> deixnei oti to synoliko partition katalmbanei 3.048 peripou GB ...Ta alla
> 200 MB pou pane ??? Mhpws 8elei kammia idiaiterh paraetro sto format ? 

  O diskos sou den einai 3.2 GB, alla 3.2 * 10^9 bytes. 1 GB = 2^30 bytes =
1073741824 bytes (as einai kala to bc). Alla oi kataskevastes diskwn dinoun
panta thn xwrhtikothta se ekatommyria (h disekatommyria) bytes.

  Etsi, 3200000000 / 1073741824 = 3.051 GB.  Apath, alla
twra pia einai paradosiakh apath. Apla to Linux arneitai na symmetasxei kai
sou metraei pragmatika GB (2^30 bytes), oxi 10^9 bytes.

  Mia kai milame gia ext2fs, Afairoume kai ta superblock backups (ena ana 8
MB tou diskou) syn accounting information kai inode tables kai ftanoume
aneta sa 3.051 GB (kai paly oikonomiko einai se sxesh me ena FAT32 filesysem
antistoixou megethous).

  H tapeinh mou gnwmh pantws einai oti kanenas logikos anthrwpos den xtizei
monokommato partition tetoiou megethous (para mono gia thn plaka tou
pragmatos -- to eixa kanei ki egw s'enan 1.7G otan prwtobghkan, amesws prin
ton spasw se 8 partitions). An (o mh geneito) symbei kati kako, tha xaseis
enan asyllhpto ogko plhroforias me th mia. Kai ta backups ginontai sketh
kolash (an den pairneis backups, ksekina twra). Kai to administration einai
eknevristiko, kai kai kai. Edw sto panepisthmio exoume polles ekatontades GB
synoliko disk space. Den tha deis pouthena partition megalytero apo 350 MB
(nai, afto shmainei PARA POLLA partitions sta diafora file servers, alla an
tous xalasei ena den tha kindyneusoun OLA ta dedomena tous).

A.

-------------------------- ,o88,o888o,,o888o. --------------------------------
Alexios Chouchoulas         '88    ,88'   ,88'   http://www.vennea.demon.co.uk 
The Unpronounceable One    ,o88oooo88ooooo88oo,     alexios at vennea.demon.co.uk

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