{"id":536,"date":"2022-08-05T14:14:41","date_gmt":"2022-08-05T06:14:41","guid":{"rendered":"https:\/\/frogvps.com\/?p=536"},"modified":"2022-08-05T14:14:42","modified_gmt":"2022-08-05T06:14:42","slug":"linux%e7%9a%84%e9%80%bb%e8%be%91%e5%8d%b7%e7%ae%a1%e7%90%86%e5%99%a8lvm","status":"publish","type":"post","link":"https:\/\/frogvps.com\/?p=536","title":{"rendered":"linux\u7684\u903b\u8f91\u5377\u7ba1\u7406\u5668LVM"},"content":{"rendered":"\n

LVM\u4ecb\u7ecd<\/h2>\n\n\n\n
\"\"
\u5377\u7ec4\u548c\u903b\u8f91\u5377<\/figcaption><\/figure>\n\n\n\n

LVM: Logical Volume Manager \u53ef\u4ee5\u5141\u8bb8\u5bf9\u5377\u8fdb\u884c\u65b9\u4fbf\u64cd\u4f5c\u7684\u62bd\u8c61\u5c42\uff0c\u5305\u62ec\u91cd\u65b0\u8bbe\u5b9a\u6587\u4ef6\u7cfb\u7edf\u7684\u5927\u5c0f\uff0c\u5141\u8bb8\u5728\u591a\u4e2a\u7269\u7406\u8bbe\u5907\u95f4\u91cd\u65b0\u7ec4\u7ec7\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n\n\n\n

LVM\u53ef\u4ee5\u5f39\u6027\u7684\u66f4\u6539LVM\u7684\u5bb9\u91cf\u3002<\/p>\n\n\n\n

\u901a\u8fc7\u4ea4\u6362PE\u6765\u8fdb\u884c\u8d44\u6599\u7684\u8f6c\u6362\uff0c\u5c06\u539f\u6765LV\u5185\u7684PE\u8f6c\u79fb\u5230\u5176\u4ed6\u7684\u8bbe\u5907\u4e2d\u4ee5\u964d\u4f4eLV\u7684\u5bb9\u91cf\uff0c\u6216\u5c06\u5176\u4ed6\u8bbe\u5907\u4e2d\u7684PE\u52a0\u5230LV\u4e2d\u4ee5\u52a0\u5927\u5bb9\u91cf\u3002<\/p>\n\n\n\n

\"\"
\u903b\u8f91\u5377\u7684\u5b9e\u73b0\u8fc7\u7a0b<\/figcaption><\/figure>\n\n\n\n

\u903b\u8f91\u5377\u7684\u5b9e\u73b0\u8fc7\u7a0b<\/strong><\/p>\n\n\n\n

  1. \u5c06\u8bbe\u5907\u6307\u5b9a\u4e3a\u7269\u7406\u5377\uff08PV\uff09<\/li>
  2. \u7528\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u7269\u7406\u5377\u6765\u521b\u5efa\u4e00\u4e2a\u5377\u7ec4\uff0c\u7269\u7406\u5377\u662f\u7528\u56fa\u5b9a\u5927\u5c0f\u7684\u7269\u7406\u533a\u57df\uff08Physical Extent\uff0cPE\uff09\u6765\u5b9a\u4e49\u7684<\/li>
  3. \u5728\u7269\u7406\u5377\u4e0a\u521b\u5efa\u7684\u903b\u8f91\u5377\uff0c \u7531\u7269\u7406\u533a\u57df\uff08PE\uff09\u7ec4\u6210<\/li>
  4. \u53ef\u4ee5\u5728\u903b\u8f91\u5377\u4e0a\u521b\u5efa\u6587\u4ef6\u7cfb\u7edf\u5e76\u6302\u8f7d<\/li><\/ol>\n\n\n\n

    \u903b\u8f91\u5377\u5bf9\u5e94\u7684\u8bbe\u5907\u540d<\/strong><\/p>\n\n\n\n

    \/dev\/dm-#\ndm: device mapper\uff0c\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u5e95\u5c42\u5757\u8bbe\u5907\u7ec4\u7ec7\u6210\u4e00\u4e2a\u903b\u8f91\u8bbe\u5907\u7684\u6a21\u5757<\/code><\/pre>\n\n\n\n
    \u8bbe\u5907\u7684\u8f6f\u94fe\u63a5<\/strong><\/p>\n\n\n\n
    \/dev\/mapper\/VG_NAME-LV_NAME\n\/dev\/VG_NAME\/LV_NAME<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u5b9e\u73b0\u903b\u8f91\u5377<\/h2>\n\n\n\n
    \u76f8\u5173\u547d\u4ee4\u5de5\u5177\u90fd\u6765\u81ealvm2\u5305<\/p>\n\n\n\n
    \u7269\u7406\u5377\u7ba1\u7406\u5de5\u5177<\/strong><\/p>\n\n\n\n
    \u663e\u793a\u7269\u7406\u5377<\/p>\n\n\n\n
    pvs\npvdisplay<\/code><\/pre>\n\n\n\n
    \u521b\u5efa\u7269\u7406\u5377\uff0c\u53ef\u4ee5\u662f\u5206\u533a\u4e5f\u53ef\u4ee5\u662f\u786c\u76d8<\/p>\n\n\n\n
    pvcreate \/dev\/DEVICE<\/code><\/pre>\n\n\n\n
    \u5220\u9664\u7269\u7406\u5377<\/p>\n\n\n\n
    pvremove \/dev\/DEVICE<\/code><\/pre>\n\n\n\n
    \u5377\u7ec4\u7ba1\u7406\u5de5\u5177<\/strong><\/p>\n\n\n\n
    \u663e\u793a\u5377\u7ec4<\/p>\n\n\n\n
    vgs\nvgdisplay<\/code><\/pre>\n\n\n\n
    \u521b\u5efa\u5377\u7ec4\uff0c-s\u6307\u5b9aPE\u7684\u5927\u5c0f\uff0c\u9ed8\u8ba44M<\/p>\n\n\n\n
    vgcreate [-s #[kKmMgGtTpPeE]] VolumeGroupName PhysicalDevicePath [PhysicalDevicePath...]<\/code><\/pre>\n\n\n\n
    \u7ba1\u7406\u5377\u7ec4<\/p>\n\n\n\n
    vgextend VolumeGroupName PhysicalDevicePath [PhysicalDevicePath...]\nvgreduce VolumeGroupName PhysicalDevicePath [PhysicalDevicePath...]<\/code><\/pre>\n\n\n\n
    \u5220\u9664\u5377\u7ec4<\/p>\n\n\n\n
    vgremove #\u9700\u8981\u5148\u5220\u9664\u7269\u7406\u5377<\/code><\/pre>\n\n\n\n
    \u903b\u8f91\u5377\u7ba1\u7406\u5de5\u5177<\/strong><\/p>\n\n\n\n
    \u663e\u793a\u903b\u8f91\u5377<\/p>\n\n\n\n
    lvs\nlvdisplay<\/code><\/pre>\n\n\n\n
    \u521b\u5efa\u903b\u8f91\u5377\uff0c-L\u6307\u5b9a\u5927\u5c0f\uff0c-l\u6307\u5b9aPE\u4e2a\u6570\u6216\u767e\u5206\u6bd4\uff0c\u4e24\u79cd\u65b9\u6cd5\u90fd\u53ef\u4ee5<\/p>\n\n\n\n
    lvcreate -L #[mMgGtT] -n NAME VolumeGroup<\/code><\/pre>\n\n\n\n
    \u4f8b\u5b50<\/p>\n\n\n\n
    lvcreate -l 60%VG -n lv1 vg0\nlvcreate -l 100%FREE -n lv2 vg0\nlvcreate -l 256 -n lv3 vg0\nlvcreate -L 700M -n lv4 vg0<\/code><\/pre>\n\n\n\n
    \u5220\u9664\u903b\u8f91\u5377<\/p>\n\n\n\n
    lvremove \/dev\/VG_NAME\/LV_NAME<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u6269\u5c55\u548c\u7f29\u51cf\u903b\u8f91\u5377<\/h2>\n\n\n\n
    \u5728\u7ebf\u6269\u5c55\u903b\u8f91\u5377<\/strong><\/p>\n\n\n\n
    \u5148\u6269\u5c55\u903b\u8f91\u5377\u518d\u6269\u5c55\u6587\u4ef6\u7cfb\u7edf<\/p>\n\n\n\n
    lvextend -L [+]#[mMgGtT] \/dev\/VG_NAME\/LV_NAME\n#ext\u6587\u4ef6\u7cfb\u7edf\nresize2fs \/dev\/VG_NAME\/LV_NAME \n#xfs\u6587\u4ef6\u7cfb\u7edf\nxfs_growfs MOUNTPOINT<\/code><\/pre>\n\n\n\n
    \u540c\u65f6\u6269\u5c55\u903b\u8f91\u5377\u548c\u6587\u4ef6\u7cfb\u7edf\uff08\u4e24\u79cd\u65b9\u6cd5\u4e8c\u9009\u4e00\uff09<\/p>\n\n\n\n
    lvextend -r -L 1G \/dev\/VG_NAME\/LV_NAME<\/code><\/pre>\n\n\n\n
    \u7f29\u51cf\u903b\u8f91\u5377\uff08\u9700\u8981\u5148\u53d6\u6d88\u6302\u8f7d\uff09<\/strong><\/p>\n\n\n\n
    \u6ce8\u610f\uff1a\u7f29\u51cf\u6709\u6570\u636e\u635f\u574f\u7684\u98ce\u9669\uff0c\u5efa\u8bae\u5148\u5907\u4efd\u518d\u7f29\u51cf\uff0cxfs\u6587\u4ef6\u7cfb\u7edf\u4e0d\u652f\u6301\u7f29\u51cf<\/p>\n\n\n\n
    \u53d6\u6d88\u6302\u8f7d<\/p>\n\n\n\n
    umount \/dev\/VG_NAME\/LV_NAME<\/code><\/pre>\n\n\n\n
    \u68c0\u67e5\u6587\u4ef6\u7cfb\u7edf<\/p>\n\n\n\n
    e2fsck -f \/dev\/VG_NAME\/LV_NAME<\/code><\/pre>\n\n\n\n
    \u7f29\u51cf\u6587\u4ef6\u7cfb\u7edf\uff0c\u5047\u8bbe\u7f29\u51cf\u52301G<\/p>\n\n\n\n
    resize2fs \/dev\/VG_NAME\/LV_NAME 1G<\/code><\/pre>\n\n\n\n
    \u7f29\u51cf\u903b\u8f91\u5377<\/p>\n\n\n\n
    lvreduce -L 1G \/dev\/VG_NAME\/LV_NAME<\/code><\/pre>\n\n\n\n
    \u91cd\u65b0\u6302\u8f7d<\/p>\n\n\n\n
    mount \/dev\/VG_NAME\/LV_NAME mountpoint<\/code><\/pre>\n\n\n\n
    \n\n\n\n
    \u8de8\u4e3b\u673a\u8fc1\u79fb\u5377\u7ec4<\/h2>\n\n\n\n
    1. \u5728\u65e7\u7cfb\u7edf\u4e2d\uff0cumount \u6240\u6709\u5377\u7ec4\u4e0a\u7684\u903b\u8f91\u5377<\/li>
    2. \u7981\u7528\u5377\u7ec4<\/li><\/ol>\n\n\n\n
         vgchange -a n vg0\n   lvdisplay<\/code><\/pre>\n\n\n\n
      1. \u5bfc\u51fa\u5377\u7ec4<\/li><\/ol>\n\n\n\n
           vgexport vg0\n   pvscan\n   vgdisplay<\/code><\/pre>\n\n\n\n
        1. \u62c6\u4e0b\u65e7\u786c\u76d8\u5728\u76ee\u6807\u8ba1\u7b97\u673a\u4e0a,\u5e76\u5bfc\u5165\u5377\u7ec4<\/li><\/ol>\n\n\n\n
             vgimport vg0   <\/code><\/pre>\n\n\n\n
          1. \u542f\u7528\u5377\u7ec4<\/li><\/ol>\n\n\n\n
               vgchange -a y vg0<\/code><\/pre>\n\n\n\n
            1. \u6302\u8f7d\u6240\u6709\u5377\u7ec4\u4e0a\u7684\u903b\u8f91\u5377<\/li><\/ol>\n\n\n\n
              \n\n\n\n
              \u62c6\u9664\u6307\u5b9a\u7684PV\u5b58\u50a8\u8bbe\u5907<\/h2>\n\n\n\n
              \u5148\u79fb\u8d70\u6570\u636e\uff0c\u9700\u8981\u5176\u4ed6\u7684\u7269\u7406\u5377\u7684\u5269\u4f59\u7a7a\u95f4\u8db3\u591f\u5b58\u653e\u88ab\u79fb\u8d70\u7684\u6570\u636e<\/p>\n\n\n\n
              pvmove \/dev\/DEVICE<\/code><\/pre>\n\n\n\n
              \u6570\u636e\u8fc1\u79fb\u5b8c\u540e\uff0c\u628a\u7269\u7406\u5377\u4ece\u5377\u7ec4vg0\u4e2d\u79fb\u9664<\/p>\n\n\n\n
              vgreduce vg0 \/dev\/DEVICE<\/code><\/pre>\n\n\n\n
              \u5220\u9664\u7269\u7406\u5377<\/p>\n\n\n\n
              pvremove \/dev\/DEVICE<\/code><\/pre>\n\n\n\n
              \u62c6\u9664\u8bbe\u5907<\/p>\n\n\n\n
              \u903b\u8f91\u5377\u5feb\u7167<\/h2>\n\n\n\n
              \"\"<\/figure>\n\n\n\n
              \u5feb\u7167\u662f\u7279\u6b8a\u7684\u903b\u8f91\u5377\uff0c\u5b83\u662f\u5728\u751f\u6210\u5feb\u7167\u65f6\u5b58\u5728\u7684\u903b\u8f91\u5377\u7684\u51c6\u786e\u62f7\u8d1d\uff0c\u5bf9\u4e8e\u9700\u8981\u5907\u4efd\u6216\u8005\u590d\u5236\u7684\u73b0\u6709\u6570\u636e\u4e34\u65f6\u62f7\u8d1d\u4ee5\u53ca\u5176\u5b83\u64cd\u4f5c\u6765\u8bf4\uff0c\u5feb\u7167\u662f\u6700\u5408\u9002\u7684\u9009\u62e9\u3002\u5feb\u7167\u53ea\u6709\u5728\u5b83\u4eec\u548c\u539f\u6765\u7684\u903b\u8f91\u5377\u4e0d\u540c\u65f6\u624d\u4f1a\u6d88\u8017\u7a7a\u95f4\uff0c\u5efa\u7acb\u5feb\u7167\u7684\u5377\u5927\u5c0f\u5c0f\u4e8e\u7b49\u4e8e\u539f\u59cb\u903b\u8f91\u5377\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528lvextend\u6269\u5c55\u5feb\u7167\u3002<\/p>\n\n\n\n
              \u903b\u8f91\u5377\u5feb\u7167\u5de5\u4f5c\u539f\u7406<\/strong><\/p>\n\n\n\n
              • \u5728\u751f\u6210\u5feb\u7167\u65f6\u4f1a\u5206\u914d\u7ed9\u5b83\u4e00\u5b9a\u7684\u7a7a\u95f4\uff0c\u4f46\u53ea\u6709\u5728\u539f\u6765\u7684\u903b\u8f91\u5377\u6216\u8005\u5feb\u7167\u6709\u6240\u6539\u53d8\u624d\u4f1a\u4f7f\u7528\u8fd9\u4e9b\u7a7a\u95f4<\/li>
              • \u5f53\u539f\u6765\u7684\u903b\u8f91\u5377\u4e2d\u6709\u6240\u6539\u53d8\u65f6\uff0c\u4f1a\u5c06\u65e7\u7684\u6570\u636e\u590d\u5236\u5230\u5feb\u7167\u4e2d<\/li>
              • \u5feb\u7167\u4e2d\u53ea\u542b\u6709\u539f\u6765\u7684\u903b\u8f91\u5377\u4e2d\u66f4\u6539\u7684\u6570\u636e\u6216\u8005\u81ea\u751f\u6210\u5feb\u7167\u540e\u7684\u5feb\u7167\u4e2d\u66f4\u6539\u7684\u6570\u636e<\/li>
              • \u7531\u4e8e\u5feb\u7167\u533a\u4e0e\u539f\u672c\u7684LV\u5171\u7528\u5f88\u591aPE\u7684\u533a\u5757\uff0c\u56e0\u6b64\u5feb\u7167\u4e0e\u88ab\u5feb\u7167\u7684LV\u5fc5\u987b\u5728\u540c\u4e00\u4e2aVG\u4e2d.\u7cfb\u7edf\u6062\u590d\u7684\u65f6\u5019\u7684\u6587\u4ef6\u6570\u91cf\u4e0d\u80fd\u9ad8\u4e8e\u5feb\u7167\u533a\u7684\u5b9e\u9645\u5bb9\u91cf<\/li><\/ul>\n\n\n\n
                \u5feb\u7167\u7279\u70b9<\/strong><\/p>\n\n\n\n
                • \u5907\u4efd\u901f\u5ea6\u5feb\uff0c\u77ac\u95f4\u5b8c<\/li>
                • \u5e94\u7528\u573a\u666f\u662f\u6d4b\u8bd5\u73af\u5883\uff0c\u4e0d\u80fd\u5b8c\u6210\u4ee3\u66ff\u5907\u4efd<\/li>
                • \u5feb\u7167\u540e\uff0c\u903b\u8f91\u5377\u7684\u4fee\u6539\u901f\u5ea6\u4f1a\u4e00\u5b9a\u6709\u5f71\u54cd<\/li><\/ul>\n\n\n\n
                  \u5b9e\u73b0\u903b\u8f91\u5377\u5feb\u7167<\/strong><\/p>\n\n\n\n
                  \u4e3a\u73b0\u6709\u903b\u8f91\u5377data\u521b\u5efa\u5feb\u7167,\u6ce8\u610fext4\u5fc5\u987b\u4f7f\u7528-p r \u5b9e\u73b0\u53ea\u8bfb<\/p>\n\n\n\n
                  lvcreate -l 64 -s -n data-snapshot \/dev\/vg0\/data<\/code><\/pre>\n\n\n\n
                  \u6302\u8f7d\u5feb\u7167,xfs\u6ce8\u610f\u8981\u4f7f\u7528-o ro\u5b9e\u73b0\u53ea\u8bfb,\u8bbf\u6b62\u5feb\u7167\u88ab\u4fee\u6539<\/p>\n\n\n\n
                  mkdir -p \/mnt\/snap\nmount -o ro,nouuid \/dev\/vg0\/data-snapshot \/mnt\/snap<\/code><\/pre>\n\n\n\n
                  \u6062\u590d\u5feb\u7167<\/p>\n\n\n\n
                  umount \/dev\/vg0\/data-snapshot\numount \/dev\/vg0\/data\nlvconvert --merge \/dev\/vg0\/data-snapshot<\/code><\/pre>\n\n\n\n
                  \u5220\u9664\u5feb\u7167<\/p>\n\n\n\n
                  umount \/mnt\/snap\nlvremove \/dev\/vg0\/data-snapshot<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
                  LVM\u4ecb\u7ecd LVM: Logical Volume Manager \u53ef\u4ee5\u5141\u8bb8\u5bf9\u5377\u8fdb\u884c\u65b9\u4fbf\u64cd\u4f5c\u7684\u62bd\u8c61\u5c42\uff0c\u5305\u62ec\u91cd\u65b0\u8bbe\u5b9a\u6587\u4ef6\u7cfb\u7edf\u7684\u5927\u5c0f\uff0c\u5141\u8bb8\u5728\u591a\u4e2a\u7269\u7406\u8bbe\u5907\u95f4\u91cd\u65b0\u7ec4\u7ec7\u6587\u4ef6\u7cfb\u7edf\u3002 LVM\u53ef\u4ee5\u5f39\u6027\u7684\u66f4\u6539LVM\u7684\u5bb9\u91cf\u3002 \u901a\u8fc7\u4ea4\u6362PE\u6765\u8fdb\u884c\u8d44\u6599\u7684\u8f6c\u6362\uff0c\u5c06\u539f…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"topic":[],"class_list":["post-536","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts\/536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=536"}],"version-history":[{"count":2,"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts\/536\/revisions"}],"predecessor-version":[{"id":541,"href":"https:\/\/frogvps.com\/index.php?rest_route=\/wp\/v2\/posts\/536\/revisions\/541"}],"wp:attachment":[{"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=536"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/frogvps.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftopic&post=536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}