{"id":160996,"date":"2026-02-14T11:12:34","date_gmt":"2026-02-14T09:12:34","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-yadra-linux-predlozhena-fajlovaya-sistema-dlmpfs"},"modified":"2026-02-14T11:12:34","modified_gmt":"2026-02-14T09:12:34","slug":"dlya-yadra-linux-predlozhena-fajlovaya-sistema-dlmpfs","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/dlya-yadra-linux-predlozhena-fajlovaya-sistema-dlmpfs","title":{"rendered":"Foi proposta um sistema de arquivos DLMPFS para o n\u00facleo Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Alexander Aring da Red Hat, respons\u00e1vel pelos subsistemas IEEE 802.15.4, DLM e flock\/fcntl no n\u00facleo do Linux, apresentou na lista de discuss\u00e3o dos desenvolvedores do n\u00facleo um sistema de arquivos especializado chamado DLMPFS. O sistema de arquivos proposto oferece uma camada para bloqueios de arquivos distribu\u00eddos, implementada com base no DLM (Gerenciador de Bloqueios Distribu\u00eddos) e ramfs. A implementa\u00e7\u00e3o do DLMPFS est\u00e1 dispon\u00edvel na forma de um conjunto de patches para o n\u00facleo do Linux 6.19.      <\/p>\n<p>O DLMPFS permite trabalhar com uma hierarquia de arquivos compartilhada entre v\u00e1rios hosts, criar e excluir arquivos e diret\u00f3rios, e aplicar ou remover bloqueios em arquivos usando as fun\u00e7\u00f5es padr\u00e3o flock() e fcntl(). No entanto, o DLMPFS n\u00e3o permite gravar e ler dados de arquivos, limitando-se apenas a opera\u00e7\u00f5es de bloqueio. Outra limita\u00e7\u00e3o \u00e9 que \u00e9 poss\u00edvel determinar o estado do bloqueio apenas conhecendo o caminho completo do arquivo bloqueado (o DLM requer o nome do recurso para determinar o bloqueio).      <\/p>\n<p>Com o DLMPFS, \u00e9 f\u00e1cil adaptar aplicativos existentes que dependem de bloqueios atrav\u00e9s da API flock\/fcntl para usar bloqueios distribu\u00eddos que abrangem v\u00e1rios hosts em um cluster, sem a necessidade de utilizar sistemas de arquivos distribu\u00eddos especializados para armazenamento de dados.     <\/p>\n<p>O DLMPFS se diferencia de sistemas de arquivos semelhantes existentes como o DLMFS por utilizar a API flock\/fcntl em vez da API espec\u00edfica do sistema de arquivos OCFS2. H\u00e1 planos para adicionar bloqueios distribu\u00eddos, conforme especificado pelo POSIX, e a possibilidade de conectar diferentes backends para integra\u00e7\u00e3o n\u00e3o apenas com o DLM, mas tamb\u00e9m com outros gerenciadores de bloqueios distribu\u00eddos, como o NFS lockd.        <\/p>\n<p>Exemplo de uso (no segundo n\u00f3, o bloqueio no arquivo \/mnt\/lock ser\u00e1 removido em 20 segundos):      N\u00f3 1:       mount -t dlmpfs -o clname=$CLUSTERNAME none \/mnt        touch \/mnt\/lock     flock \/mnt\/lock -c &#171;echo &#8216;adquirido&#8217;; sleep 20; echo &#8216;liberado'&#187;    N\u00f3 2:       mount -t dlmpfs -o clname=$CLUSTERNAME none \/mnt     touch \/mnt\/lock     flock \/mnt\/lock -c &#171;echo &#8216;adquirido&#8217;; sleep 20; echo &#8216;liberado'&#187;<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64796\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0410\u043b\u0435\u043a\u0441\u0430\u043d\u0434\u0440 \u0410\u0440\u0438\u043d\u0433 (Alexander Aring) \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Red Hat, \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u0432 \u044f\u0434\u0440\u0435 Linux \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b IEEE 802.15.4, DLM \u0438 flock\/fcntl, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u0432 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 DLMPFS. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u0430\u044f \u0424\u0421 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043b\u043e\u0439 \u0434\u043b\u044f \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0445 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043e\u043a, \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430 \u0431\u0430\u0437\u0435 DLM (Distributed Lock Manager) \u0438 ramfs. \u0420\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f DLMPFS \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0432 \u0444\u043e\u0440\u043c\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u043f\u0430\u0442\u0447\u0435\u0439 \u043a \u044f\u0434\u0440\u0443 Linux [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-160996","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0410\u043b\u0435\u043a\u0441\u0430\u043d\u0434\u0440 \u0410\u0440\u0438\u043d\u0433 (Alexander Aring) \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Red Hat, \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u0432 \u044f\u0434\u0440\u0435 Linux \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b IEEE 802.15.4, DLM \u0438 flock\/fcntl, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u0432 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