{"id":7904,"date":"2021-12-29T13:49:35","date_gmt":"2021-12-29T04:49:35","guid":{"rendered":"http:\/\/umezawa.dyndns.info\/wordpress\/?p=7904"},"modified":"2021-12-29T13:54:37","modified_gmt":"2021-12-29T04:54:37","slug":"mdadm-%e3%81%ae-raid1-%e3%81%ae%ef%bc%88%e3%82%b9%e3%83%9a%e3%82%a2%e3%81%a7%e3%81%af%e3%81%aa%e3%81%84%ef%bc%89%e3%83%a1%e3%83%b3%e3%83%90%e3%83%87%e3%83%90%e3%82%a4%e3%82%b9%e3%82%92%e5%a2%97","status":"publish","type":"post","link":"http:\/\/umezawa.dyndns.info\/wordpress\/?p=7904","title":{"rendered":"mdadm \u306e RAID1 \u306e\uff08\u30b9\u30da\u30a2\u3067\u306f\u306a\u3044\uff09\u30e1\u30f3\u30d0\u30c7\u30d0\u30a4\u30b9\u3092\u5897\u3084\u3059"},"content":{"rendered":"<p>Linux \u306e mdadm \u3067\u30012\u53f0\u3067\u306e RAID1 \u306b\u30c7\u30d0\u30a4\u30b9\u30921\u3064\u5897\u3084\u3057\u3066\u30013\u53f0\u3067\u306e RAID1 \u306b\u5909\u63db\u3059\u308b\u624b\u9806<\/p>\n<p><!--more--><\/p>\n<blockquote>\n<pre>\r\nroot@pandora:\/home\/umezawa# cat \/proc\/mdstat\r\nPersonalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]\r\nmd2 : active raid1 sda2[0] sdb2[1]\r\n      1046528 blocks super 1.2 [2\/2] [UU]\r\n\r\nunused devices: <none>\r\n\r\n# \u307e\u305a\u30c7\u30d0\u30a4\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u3002\u8ffd\u52a0\u3057\u305f\u30c7\u30d0\u30a4\u30b9\u306f\u30b9\u30da\u30a2\u306b\u306a\u308b\r\nroot@pandora:\/home\/umezawa# mdadm --add \/dev\/md2 \/dev\/sdc2\r\nmdadm: added \/dev\/sdc2\r\n\r\nroot@pandora:\/home\/umezawa# cat \/proc\/mdstat\r\nPersonalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]\r\nmd2 : active raid1 sdc2[2](S) sda2[0] sdb2[1]\r\n      1046528 blocks super 1.2 [2\/2] [UU]\r\n\r\nunused devices: <none>\r\n\r\n# \u30c7\u30d0\u30a4\u30b9\u6570\u3092\u5897\u3084\u3057\u3066\u3001\u30b9\u30da\u30a2\u3092\u30e1\u30f3\u30d0\u306b\u6607\u683c\u3055\u305b\u308b\r\nroot@pandora:\/home\/umezawa# mdadm --grow --raid-devices=3 \/dev\/md2\r\nraid_disks for \/dev\/md2 set to 3\r\n\r\nroot@pandora:\/home\/umezawa# cat \/proc\/mdstat\r\nPersonalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]\r\n\r\nmd2 : active raid1 sdc2[2] sda2[0] sdb2[1]\r\n      1046528 blocks super 1.2 [3\/2] [UU_]\r\n      [=>...................]  recovery =  9.6% (101248\/1046528) finish=0.3min speed=50624K\/sec\r\n\r\nunused devices: <none>\r\n<\/pre>\n<\/blockquote>\n<p>RAID5\u30846\u3067\u540c\u3058\u3053\u3068\u3092\u3084\u308b\u3068\u3001\u5197\u9577\u5ea6\u306e\u4ee3\u308f\u308a\u306b\u5bb9\u91cf\u304c\u5897\u3048\u308b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u306e mdadm \u3067\u30012\u53f0\u3067\u306e RAID1 \u306b\u30c7\u30d0\u30a4\u30b9\u30921\u3064\u5897\u3084\u3057\u3066\u30013\u53f0\u3067\u306e RAID1 \u306b\u5909\u63db\u3059\u308b\u624b\u9806<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-7904","post","type-post","status-publish","format-standard","hentry","category-technology"],"_links":{"self":[{"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/7904","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7904"}],"version-history":[{"count":3,"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/7904\/revisions"}],"predecessor-version":[{"id":7907,"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/7904\/revisions\/7907"}],"wp:attachment":[{"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7904"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7904"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/umezawa.dyndns.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}