{"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\/fr\/blog\/administrirovanie\/podstava-s-nvme-na-linukse","title":{"rendered":"Probl\u00e8me avec NVMe sur Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bonne journ\u00e9e.<\/p>\n<p>Je voudrais attirer l'attention de la communaut\u00e9 sur une caract\u00e9ristique particuli\u00e8re de Linux lors de l'utilisation de plusieurs SSD NVMe dans un m\u00eame syst\u00e8me. Cela sera particuli\u00e8rement pertinent pour ceux qui aiment cr\u00e9er des ensembles RAID logiciels \u00e0 partir de NVMe.<\/p>\n<p>J'esp\u00e8re que les informations ci-dessous contribueront \u00e0 prot\u00e9ger vos donn\u00e9es et \u00e0 \u00e9viter des erreurs p\u00e9nibles.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nNous sommes tous habitu\u00e9s \u00e0 la logique suivante de Linux lors de la gestion des dispositifs de bloc :<br \/>\nSi l'appareil est nomm\u00e9 \/dev\/sda, les partitions seront \/dev\/sda1, \/dev\/sda2, etc.<br \/>\nPour visualiser les attributs SMART, nous utilisons quelque chose comme smartctl -a \/dev\/sda, puis nous formatons et ajoutons les partitions au tableau, comme \/dev\/sda1.<\/p>\n<p>Nous avons tous pris comme axiome que \/dev\/sda1 se trouve sur \/dev\/sda. Et, un jour, si SMART montre que \/dev\/sda est presque d\u00e9faillant, c'est pr\u00e9cis\u00e9ment \/dev\/sda1 que nous retirerons de l'ensemble RAID pour le remplacer.<\/p>\n<p>Il s'av\u00e8re qu'en travaillant avec les namespaces NVMe, cette r\u00e8gle ne s'applique pas. Preuve :<\/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                   Mod\u00e8le                                   Utilisation du Namespace                      Format           Version FW  \n---------------- -------------------- ---------------------------------------- ------------------------- ---------------- --------\n\/dev\/nvme0n1     S466NX0K72XX06M      Samsung SSD 970 EVO 500 Go                1          96,92  Go \/ 500,11  Go    512   B +  0 B   1B2QEXE7\n\/dev\/nvme1n1     S466NX0K43XX48W      Samsung SSD 970 EVO 500 Go                1          91,00  Go \/ 500,11  Go    512   B +  0 B   1B2QEXE7\n\/dev\/nvme2n1     S466NX0K72XX01A      Samsung SSD 970 EVO 500 Go                1           0,00   B \/ 500,11  Go    512   B +  0 B   1B2QEXE7\nNum\u00e9ro de s\u00e9rie :                      S466NX0K72XX06M\nNum\u00e9ro de s\u00e9rie :                      S466NX0K72XX01A\nNum\u00e9ro de s\u00e9rie :                      S466NX0K43XX48W\n<\/code><\/pre>\n<p>\nL'observateur attentif remarquera, en comparant les num\u00e9ros de s\u00e9rie, que \/dev\/nvme1n1 est en r\u00e9alit\u00e9 situ\u00e9 sur \/dev\/nvme2, et vice versa.<\/p>\n<p>P.S.<\/p>\n<p>Je vous souhaite de ne jamais retirer le dernier SSD NVMe fonctionnel de l'ensemble RAID.<br \/>\n<br \/>Source : <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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