{"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\/it\/blog\/administrirovanie\/podstava-s-nvme-na-linukse","title":{"rendered":"Problema con NVMe su Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Buon pomeriggio.<\/p>\n<p>Volevo richiamare l'attenzione della comunit\u00e0 su una caratteristica distintiva di Linux quando si lavora con pi\u00f9 NVMe SSD in un sistema. Questo sar\u00e0 particolarmente rilevante per coloro che amano creare array RAID software da NVMe.<\/p>\n<p>Spero che le informazioni qui sotto possano aiutarti a proteggere i tuoi dati e a evitare errori fastidiosi.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nTutti noi ci siamo abituati alla seguente logica di Linux quando si lavora con dispositivi a blocchi:<br \/>\nSe il dispositivo si chiama \/dev\/sda, le partizioni su di esso saranno \/dev\/sda1, \/dev\/sda2, e cos\u00ec via.<br \/>\nPer visualizzare gli attributi SMART utilizziamo qualcosa come smartctl -a \/dev\/sda, e formattiamo, aggiungendo poi le partizioni, come \/dev\/sda1, agli array.<\/p>\n<p>Tutti noi ci siamo abituati all'asseverazione che \/dev\/sda1 si trova su \/dev\/sda. E, se un giorno SMART mostra che \/dev\/sda sta per guastarsi, sar\u00e0 proprio \/dev\/sda1 che butteremo fuori dall'array RAID per sostituirlo.<\/p>\n<p>A quanto pare, quando si lavora con i Namespace NVMe questa regola non vale. 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\nSerial Number:                      S466NX0K72XX06M\nSerial Number:                      S466NX0K72XX01A\nSerial Number:                      S466NX0K43XX48W\n<\/code><\/pre>\n<p>\nIl lettore attento noter\u00e0, confrontando i numeri di serie, che \/dev\/nvme1n1 si trova in realt\u00e0 su \/dev\/nvme2 e viceversa.<\/p>\n<p>P.S.<\/p>\n<p>Ti auguro di non dover mai rimuovere l'ultimo NVMe SSD funzionante dall'array 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 5.0.1.1 - 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