Pio file system gia taxytita

[Theodoros V. Kalamatianos]

On Sat, 29 Oct 2005, Sotiris Katsikis wrote:

> Emena padws de mou exei vgalei pote provlima. Ekdosh pou xrhsimopoiw
> twra einai 3.6.
> Home xrhsh tou kanw, alla akomi kai otan kleinw to pc p.x. apotoma
> (xwris unmount to file system - shutdown sta windowsadika) stin
> epomeni ekkinhsh (mount) borei kai epanaferei ta logs (journals) xwris
> provlima. Se adithesh me ext3 to opoio me exei provlimatisei merikes
> fores. (Mou eixe xreiastei fsck (e2fsck))

Xmm... h alhtheia einai oti fsck exw xreiastei kai egw me to ext3, gi' 
auto kai twra teleutaia flertarw me thn idea na metavw se kapoio apo ta 
XFS/JFS - pithanon sto prwto. Dystyxws to reiserfs otan to xrhsimopoiousa 
(gyrw sthn epoxh tou linux-2.4.15) mou eixe kanei apisteuta provlimata - 
mou evgaze anakatemena ta contents kapoiwn arxeiwn, polla apo ta opoia den 
htan kan anoikta kai vriskontan kata protimhsh sto /etc. Meta thn 3h fora 
pou xreiasthke na bootarw me rescue disk gia na ftiaksw to /etc/fstab kai 
to /etc/inittab to petaksa kai evala Ext3 - to XFS tote htan akoma patch.

Fantazomai oti twra auta ta provlimata tha exoun diorthwthei, alla gia 
mena exei akoma varos o psyxologikos paragontas - ama den niwthw kala me 
kati den to vazw. To oti to reiserfs htan se maintenance mode hdh apo tous 
2.4 kernels den me entharynei kai poly.

An oi kakes glwsses ths LKML lene alhtheia, o Reiser to reiserfs-3.6 to 
parathse praktika stous free-time developers ths LKML 3-4 kernel releases 
meta to inclusion tou gia na anaptyksei to reiserfs-4. Autos einai, an 
katalava kala, kai enas apo tous logous pou einai distaktikoi gia to 
inclusion tou reiserfs-4, fovountai oti tha vrethoun pali me ena 
semi-maintained kommati kwdika... To olo eimai-theos attitude tou Reiser 
den fainetai na voithaei kai poly, epishs...

> Oson afora to notail, ap' oti diavasa kapou kerdizeis me to option on
> kai kapou xaneis. Opote mallon analoga th xrhsh, as mas pei kapoios
> pio eidikos!

Opws anefera kai se allo post, to notail stamata twn paketarisma mikrwn 
arxeiwn sta metadata tou FS. Epishs den epitrepei se perissotera apo ena 
arxeia na moirastoun ena block sto disko. Auto exei san apotelesma na 
kerdizeis se epidoseis, alla na xaneis kapoio xwro sto disko. Ena epishs 
mikro pleonekthma - pou dystyxws mporei na xreiastei otan kaneis file 
management stis 4:00am :-) - einai oti me to notail ta arxeia exoun 
apokleistikh xrhsh twn disk blocks kai etsi mporeis eukolotera na kaneis 
undelete me grep sto partition :-).

BTW, kserei kaneis an ta ReiserFS/XFS/JFS yposthrizoun kati antistoixo me 
ta attributes tou Ext3 (man chattr) ? Kyriws endiaferomai gia ta immutable 
(-i) kai append-only (-a) flags.