{"id":34664,"date":"2019-10-31T21:59:41","date_gmt":"2019-10-31T18:59:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim\/"},"modified":"2019-10-31T21:59:41","modified_gmt":"2019-10-31T18:59:41","slug":"zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/administrirovanie\/zfsonlinux-0-8-fichi-stabilizatsiya-intrigi-nu-i-trim","title":{"rendered":"ZFSonLinux 0.8: funktioner, stabilisering, intriger. Og trim.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

For literally the past few days, a new stable version of ZFSonLinux has been released, a project that is now central in the world of OpenZFS development. Farewell, OpenSolaris, hello fierce GPL-CDDL incompatible world of Linux.<\/p>\n

\"ZFSonLinux
\nBelow is a review of the most interesting things (well, 2200<\/u> commits!), and for dessert \u2013 a bit of intrigue.
\n<\/a><\/noindex><\/p>\n

New features<\/h3>\n

\nOf course, the most anticipated one is native encryption<\/b>. Now you can encrypt only the necessary datasets with the built-in ZFS encryption, and (in my opinion \u2014 the main thing) \u2014 you can send encrypted data through zfs send<\/i> and check the integrity of the data WITHOUT decryption using built-in tools, all the possibilities for maintaining ZFS data integrity will be at your disposal!<\/p>\n

Next in importance, it is worth mentioning the long-awaited TRIM<\/b>. Ja, han har taget meget lang tid om at komme i produktion. Dels fordi problemet med slid p\u00e5 SSD'er ikke er s\u00e5 kritisk for CoW-filsystemer. Men nu er vi alle rolige \u2014 zpool trim <\/i>will save our precious flash drives.<\/p>\n

Now you can remove<\/b> accidentally added vdev arrays from the pool (but only if it's sparse or mirror). A useful little thing.<\/p>\n

Next in our hit parade is pool checkpoints<\/b>. Briefly \u2014 snapshots for the entire state of the pool, BUT allowing the rollback of changes not only in data but also in enabled pool features and structural changes. Another way to secure yourself.<\/p>\n

Pool initialization <\/b> \u2014 filling the underlying storage with zeros. Useful for operation in environments with thin provisioned disks to clearly allocate space and exclude unexpected performance drops in the future.<\/p>\n

Project accounting and quota<\/b> \u2014 in the existing quota mechanism, it is now possible to use project segmentation.<\/p>\n

Channel programs<\/b> \u2014 the ability to perform administrative tasks atomically using Lua scripts. There are limits on execution time and memory. If you are into automation \u2014 this is for you.<\/p>\n

Direct IO<\/b> \u2014 for simplicity, we rolled out Direct IO functionality, nothing has changed internally (calls go straight past the cache), but now software wishing to operate in this mode will not suffer.<\/p>\n

Projekt Pyzfs<\/b> is now integrated into the main repository and taken under the wing of the ZFSonLinux project. There are now more tools for management from Python (and support for the module will be less of a concern). Many Python scripts have also been adapted for Python 3.<\/p>\n

And now for the delicious part \u2014 performance<\/h4>\n

\nNu kan metadata f\u00f8rst l\u00e6ses ved scrub- og resilver-operationer, og derefter dataene i den maksimale seriel<\/b> form \u2014 p\u00e5 den m\u00e5de foreg\u00e5r genopretning af arrayet og integritetskontrol med maksimal hastighed.<\/p>\n

Allokeringsklasser<\/b> \u2014 vdev-arrays har nu en ny type lager, s\u00e5 metadata\/ deduplikerings-tabeller (DDT) \/ datablokke mindre end X KB kan flyttes til et separat vdev-array fra mere effektive diske. Mere hastighed til hastighedsguden!<\/u> (og forresten \u2014 denne mulighed vil v\u00e6re meget praktisk i fremtiden DRAID<\/a><\/noindex>).<\/p>\n

Mange administrative kommandoer arbejder nu hurtigere p\u00e5 grund af punktcache af metadata (for eksempel, zfs list, zfs get<\/i>).<\/p>\n

Dataallokeringsprocessen er paralleliseret<\/b>, nu oprettes der flere allokeringsenheder for hver sektion af frit plads (metaslab). Selv om det ikke vil udnytte NVME til fulde, vil det blive bedre.<\/p>\n

Forsinket integritetsgenopretning<\/b> af arrayet vil ikke belaste arrayet med samtidig rekonstruktion af flere diske, men vil g\u00f8re det sekventielt. Dette vil b\u00e5de reducere indflydelsen p\u00e5 ydeevnen og tiden til rekonstruktion.<\/p>\n

Ved import af puljer med et stort antal volumes<\/b> er hastigheden for deres registrering i systemet \u00f8get.<\/p>\n

Derudover QAT<\/b> tillader nu aflastning af krypterings- og checksumberegning.<\/p>\n

Plus en masse sm\u00e5 \u00e6ndringer (trods alt 2000+ commits i udgivelsen!).<\/a><\/noindex><\/p>\n

Og til dessert \u2014 intriger<\/h3>\n

\nSelvom ZFSonLinux hurtigt tilf\u00f8jer support til nye Linux-kerner (i \u00f8jeblikket underst\u00f8ttes versioner 2.6.32 \u2014 5.1*), viser kernelvedligeholdere tydelig ligegyldighed over for hj\u00e6lp til tredjepartsmoduler (\u201c\u2026vi bryder os slet ikke om
\neksterne kernemoduler\u2026<\/a><\/noindex> \u2014 greg k-h\u201d). S\u00e5 de n\u00f8dvendige systemopkald for effektiv drift i version 5.0 blev \u00e6ndret til GPL-only <\/a><\/noindex>. I kerner med denne patch vil ydeevnen af ZFS v\u00e6re betydeligt d\u00e5rligere. Det redder, at denne funktionalitet kan implementeres fra modul-siden, hvilket sandsynligvis vil blive gjort. Indtil da kan du tage et eksempel fra NixOS \u2014 de rullede blot patchen tilbage i kernerne.<\/a><\/noindex> \ud83d\ude42<\/p>\n

Projektet har ogs\u00e5 f\u00e5et en Code of Conduct, hvilket udl\u00f8ste en b\u00f8lge af diskussioner. Men vi stod imod \ud83d\ude42<\/p>\n

\u00d8nsker alle en stabil backup og stabile versioner!<\/p>\n

Nyttige links:
\n \u2014 udgivelsen p\u00e5 Github<\/a><\/noindex>
\n \u2014 min introduktion til ZFS<\/a><\/noindex>
\n
Kilde: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0411\u0443\u043a\u0432\u0430\u043b\u044c\u043d\u043e \u043d\u0430 \u0434\u043d\u044f\u0445 \u0440\u0435\u043b\u0438\u0437\u043d\u0443\u043b\u0438 \u0441\u0432\u0435\u0436\u0443\u044e stable \u0432\u0435\u0440\u0441\u0438\u044e ZFSonLinux, \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0442\u0435\u043f\u0435\u0440\u044c \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u044c\u043d\u044b\u043c \u0432 \u043c\u0438\u0440\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 OpenZFS. \u041f\u0440\u043e\u0449\u0430\u0439, OpenSolaris, \u0437\u0434\u0440\u0430\u0432\u0441\u0442\u0432\u0443\u0439 \u0441\u0432\u0438\u0440\u0435\u043f\u044b\u0439 GPL-CDDL \u043d\u0435\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b\u0439 \u043c\u0438\u0440 Linux. \u041f\u043e\u0434 \u043a\u0430\u0442\u043e\u043c \u043e\u0431\u0437\u043e\u0440 \u0441\u0430\u043c\u044b\u0445 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u044b\u0445 \u0432\u0435\u0449\u0435\u0439 (\u0435\u0449\u0451 \u0431\u044b, 2200 \u043a\u043e\u043c\u043c\u0438\u0442\u043e\u0432!), \u0430 \u043d\u0430 \u0434\u0435\u0441\u0435\u0440\u0442 \u2014 \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u0438\u043d\u0442\u0440\u0438\u0433. \u041d\u043e\u0432\u044b\u0435 \u0444\u0438\u0448\u043a\u0438 \u041a\u043e\u043d\u0435\u0447\u043d\u043e \u0436\u0435, \u0441\u0430\u043c\u0430\u044f \u043e\u0436\u0438\u0434\u0430\u0435\u043c\u0430\u044f \u2014 \u043d\u0430\u0442\u0438\u0432\u043d\u043e\u0435 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435. \u0422\u0435\u043f\u0435\u0440\u044c \u043c\u043e\u0436\u043d\u043e \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0443\u0436\u043d\u044b\u0435 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26117,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-34664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47ZFSonLinux 0.8: funktioner, stabilisering, intriger. 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