{"id":73492,"date":"2020-03-10T08:41:58","date_gmt":"2020-03-10T05:41:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/podstava-s-nvme-na-linukse"},"modified":"2020-03-10T08:41:58","modified_gmt":"2020-03-10T05:41:58","slug":"podstava-s-nvme-na-linukse","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/administrirovanie\/podstava-s-nvme-na-linukse","title":{"rendered":"Problemas com NVMe no Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Boa tarde.<\/p>\n<p>Quero chamar a aten\u00e7\u00e3o da comunidade para uma caracter\u00edstica particular do Linux ao trabalhar com v\u00e1rios SSD NVMe em um \u00fanico sistema. Isso ser\u00e1 especialmente relevante para aqueles que gostam de criar matrizes RAID de software com NVMe.<\/p>\n<p>Espero que as informa\u00e7\u00f5es apresentadas abaixo ajudem a proteger seus dados e a evitar erros desagrad\u00e1veis.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nTodos n\u00f3s estamos acostumados \u00e0 seguinte l\u00f3gica do Linux ao trabalhar com dispositivos de bloco:<br \/>\nSe o dispositivo \u00e9 chamado de \/dev\/sda, as parti\u00e7\u00f5es nele ser\u00e3o \/dev\/sda1, \/dev\/sda2, etc.<br \/>\nPara visualizar os atributos SMART, usamos algo como smartctl -a \/dev\/sda, e formatamos, adicionando as parti\u00e7\u00f5es \u00e0s matrizes, como \/dev\/sda1.<\/p>\n<p>Todos n\u00f3s assumimos como axioma que \/dev\/sda1 est\u00e1 localizado em \/dev\/sda. E, se um dia o SMART mostrar que \/dev\/sda est\u00e1 quase com problemas, ser\u00e1 \/dev\/sda1 que iremos remover da matriz RAID para substitui\u00e7\u00e3o.<\/p>\n<p>Aparentemente, ao trabalhar com Namespaces NVMe, essa regra n\u00e3o se aplica. Prova:<\/p>\n<pre><code class=\"plaintext\">nvme list &amp;&amp; (smartctl -a \/dev\/nvme0 &amp;&amp; smartctl -a \/dev\/nvme1 &amp;&amp; smartctl -a \/dev\/nvme2) | grep Serial\nNode             SN                   Model                                    Namespace Usage                      Format           FW Rev  \n---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- --------\n\/dev\/nvme0n1     S466NX0K72XX06M      Samsung SSD 970 EVO 500GB                1          96.92  GB \/ 500.11  GB    512   B +  0 B   1B2QEXE7\n\/dev\/nvme1n1     S466NX0K43XX48W      Samsung SSD 970 EVO 500GB                1          91.00  GB \/ 500.11  GB    512   B +  0 B   1B2QEXE7\n\/dev\/nvme2n1     S466NX0K72XX01A      Samsung SSD 970 EVO 500GB                1           0.00   B \/ 500.11  GB    512   B +  0 B   1B2QEXE7\nN\u00famero de S\u00e9rie:                      S466NX0K72XX06M\nN\u00famero de S\u00e9rie:                      S466NX0K72XX01A\nN\u00famero de S\u00e9rie:                      S466NX0K43XX48W\n<\/code><\/pre>\n<p>\nO leitor atento, ao comparar os n\u00fameros de s\u00e9rie, notar\u00e1 que \/dev\/nvme1n1 est\u00e1, na verdade, localizado em \/dev\/nvme2, e vice-versa.<\/p>\n<p>P.S.<\/p>\n<p>Desejo a voc\u00ea que nunca precise remover o \u00faltimo SSD NVMe vivo de sua matriz RAID.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/491454\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0431\u0440\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0441\u0443\u0442\u043e\u043a. \u0425\u043e\u0442\u0435\u043b \u043e\u0431\u0440\u0430\u0442\u0438\u0442\u044c \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u0441\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u0430 \u043d\u0430 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u043d\u0443\u044e \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044c Linux \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 NVMe SSD \u0432 \u043e\u0434\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e \u0431\u0443\u0434\u0435\u0442 \u0434\u043b\u044f \u0442\u0435\u0445 \u043a\u0442\u043e \u043b\u044e\u0431\u0438\u0442 \u0434\u0435\u043b\u0430\u0442\u044c \u0438\u0437 NVMe \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0435 RAID \u043c\u0430\u0441\u0441\u0438\u0432\u044b. \u041d\u0430\u0434\u0435\u044e\u0441\u044c, \u0447\u0442\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u0430\u044f \u043d\u0438\u0436\u0435 \u043f\u043e\u043c\u043e\u0436\u0435\u0442 \u0443\u0431\u0435\u0440\u0435\u0447\u044c \u0432\u0430\u0448\u0438 \u0434\u0430\u043d\u043d\u044b\u0435 \u0438 \u0438\u0437\u0431\u0430\u0432\u0438\u0442 \u043e\u0442 \u0434\u043e\u0441\u0430\u0434\u043d\u044b\u0445 \u043e\u0448\u0438\u0431\u043e\u043a. \u0412\u0441\u0435 \u043c\u044b \u043f\u0440\u0438\u0432\u044b\u043a\u043b\u0438 \u043a \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 \u043b\u043e\u0433\u0438\u043a\u0435 Linux \u043f\u0440\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-73492","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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