{"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\/es\/blog\/administrirovanie\/podstava-s-nvme-na-linukse","title":{"rendered":"Un problema con NVMe en Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Buenas,<\/p>\n<p>Quer\u00eda llamar la atenci\u00f3n de la comunidad sobre una caracter\u00edstica particular de Linux al trabajar con m\u00faltiples SSD NVMe en un mismo sistema. Esto ser\u00e1 especialmente relevante para aquellos que disfrutan de crear arreglos RAID de NVMe.<\/p>\n<p>Espero que la informaci\u00f3n presentada a continuaci\u00f3n ayude a proteger sus datos y evite errores molestos.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nTodos estamos acostumbrados a la siguiente l\u00f3gica de Linux al trabajar con dispositivos de bloque:<br \/>\nSi el dispositivo se llama \/dev\/sda, las particiones en \u00e9l ser\u00e1n \/dev\/sda1, \/dev\/sda2, etc.<br \/>\nPara ver los atributos SMART utilizamos algo como smartctl -a \/dev\/sda, y formateamos, y a\u00f1adimos ya las particiones al arreglo, como \/dev\/sda1.<\/p>\n<p>Todos estamos acostumbrados a la axioma de que \/dev\/sda1 est\u00e1 ubicado en \/dev\/sda. Y, si un d\u00eda SMART muestra que \/dev\/sda est\u00e1 casi muerto, \u2014 ser\u00e1 precisamente \/dev\/sda1 lo que eliminaremos del arreglo RAID para reemplazarlo.<\/p>\n<p>Resulta que al trabajar con Namespaces NVMe, esta regla no se aplica. Prueba:<\/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 serie:                      S466NX0K72XX06M\nN\u00famero de serie:                      S466NX0K72XX01A\nN\u00famero de serie:                      S466NX0K43XX48W\n<\/code><\/pre>\n<p>\nEl lector atento, al comparar los n\u00fameros de serie, notar\u00e1 que \/dev\/nvme1n1 en realidad est\u00e1 ubicado en \/dev\/nvme2, y viceversa.<\/p>\n<p>P.D.<\/p>\n<p>Les deseo que nunca eliminen el \u00faltimo SSD NVMe vivo de un arreglo RAID.<br \/>\n<br \/>Fuente: <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 5.0.2 - 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