Dzidziso: Loop File Systems

Chii chinonzi loop fileystem?

Gnu / Linux (uye iyo yakawanda masisitimu eunix) ine mashandiro ayo anotendera kukwirisa faira (rakambo fomatiwa) sekunge raive rakaomarara diski, kazhinji isina tafura yekuparadzanisa. Uyu mudhirowa unogadzirwa (wakagadzirwa neni) unotsanangura mashandiro eiyi mashandiro.

** Haimiriri zvakazara mashandiro.

Zvishandiso zve loop mafaira

1- Mount.iso mafaera

Iwo .iso mafaera, iwo akaenzana par kugona pane maCD nemaDVD, hapana chimwe kunze kweiyo faira refaira iro iro faira system inogona ISO 9960 (zvakajairika kumaCD) kana UDF (inonyanya kuwanikwa paDVD). Kuisimudza, isu tinoshandisa iyo yekuraira gomo.

mkdir iso # isu tinogadzira dhairekitori chmod -R 666 iso # tinopa vese vashandisi verenga mvumo gomo mufananidzo.iso iso / # isu tinogadzira iyo iso mufananidzo (inoda midzi)

Kukamurwa kwauinako ndekwekuti, nekuda kwezvikonzero zviri pachena, ese mafaera faira anoverengwa-chete.

2- verenga-chete squashfs

Ngatitii isu tine dhairekitori remifananidzo uye / kana mavhidhiyo akarongeka zvinoenderana negore raakatorwa. Zviripachena, hazvigoneke kuti isu tinoda kugadzirisa iyo data iri mumafolda kubva makore apfuura. Ndipo panopinda maSquashfs. Squashfs inoverengwa-chete yakatsikirirwa faira system, saka kana mufananidzo wacho wagadzirwa, hatisi kuzokwanisa kugadzirisa iyo data iri mukati.

Saka, kwete chete isu tichaponesa hombe nzvimbo, asi pachavewo neanoziva maitiro kuti kuverenga kwemafaira kuchakurumidza, nekufanirwa kuverenga mafaera madiki, nekuti mazuva ano decompressing faira iri shoma simba kuyedza mazhinji maCPU.

Kusiya zvakatangira, kugadzira squashfs mufananidzo isu tinofanirwa kushandisa ra mksquashfs rairo, ine syntax iri nyore:

mksquashfs directorio 1 [directorio 2 directorio 3...] imagen.sqsfs -comp [algoritmo de compresión] -b [tamaño del bloque ]

Uye heino muenzaniso unoshanda:

mksquashfs fotos-2009 fotos-2010 fotos-2011 fotos-2012 fotos-2013 fotos_2009-2013.sqsfs -comp xz -bs 1M

Zvakanaka, iyo yakasarudzwa algorithm ndeye xz sezvo iri iyo iyo iyo yakakwira compression ratio zvinopihwa (zveizvo zviripo), nepo saizi yakasarudzika iri yepamusoro. chii inobvumira zvirinani kutsikisa mhedzisiro (nekutadza ivo vari 64KiB).

Zvino isu tinofanirwa kukwanisa kuisimudza neyakareruka;

mount fotos_2009-2013.sqsfs fotos_2009-2013/

Mushure mekutarisa kuti zvese zvakaringana, tinogona kudzima mafaera ekutanga kana kusiya iyo faira se backup.

Kana isu tichida kuti iiswe apo OS painotanga, isu tinofanirwa kuwedzera mutsetse weichi chimiro kune iyo / etc / fstab:

/dir/loop.sqsh /dir/mountdir squashfs ro,defaults 0 0

Zvino, chii chinoitika kana tichida kuwedzera kana kudzima mafaera, kana kungobvisa aya mafoto? Zvakanaka, isu tine rairo yekuraira unsquashfs.

unsquashfs [opciones] snapshot.sqfs [Directorios o archivos que extraer]

Nokusingaperi inoshandisa "squashfs-mudzi" sedhairekitori rekuburitsa. inogona kuchinjwa ne -d sarudzo

3- «Kuchinja kwekukurumidzira»

Fungidzira kuti chero chikonzero (hibernation, hukuru hukuru ...) iwe unoda imwe swap. Apa ndipo panouya chiuno faira, danho rekutanga kugadzira isina chinhu faira yeimwe saizi, iine imwe bhuru saizi, tinoita izvi nemurairo dd:

dd if=/dev/zero of=loop bs=1M count=512

Mune ino kesi, iyo block ndeye MiB imwe uye saizi saizi iri 512MiB. Hazvifanirwe kunge zvakadaro.

Isu tinogadzira uye tinoshandisa chinjana nemurairo uyu

mkswap loop && swapon loop

Ramba uchifunga kuti mashandiro eiyo loop faira anogara akati kwirei kuderera pane eiyo chaiyo epanyama.

4-ita zvaunoda

Iyi ndeimwe yemimwe mienzaniso ine hunhu, inzwa wakasununguka kuyedza chroots, encryption system, nested loops… Mikana yako haina muganho. Asi, chenjera nemirairo yaunomhanya, funga nokungwarira usati wadzvanya pinda.

Zvinongedzo zvekunakidza

• squash fs wikipedia
• Murume mksquashfs
• Munhu unsquashfs
• iso 9960 wikipedia
• udf wikipedia
• vfs wikipedia
• loop wikipedia