{"id":1401,"date":"2013-03-17T13:24:39","date_gmt":"2013-03-17T05:24:39","guid":{"rendered":"https:\/\/blog.rexdf.org\/?p=1401"},"modified":"2013-03-17T13:24:39","modified_gmt":"2013-03-17T05:24:39","slug":"%e8%bd%aclinux-lvm-%e9%80%bb%e8%be%91%e5%8d%b7%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/blog.rexdf.org\/ja\/2013\/03\/%e8%bd%aclinux-lvm-%e9%80%bb%e8%be%91%e5%8d%b7%e7%ae%a1%e7%90%86\/","title":{"rendered":"[\u8f6c]Linux LVM \u903b\u8f91\u5377\u7ba1\u7406"},"content":{"rendered":"

PV(Physical Volume) \u7269\u7406\u5377\u3002\u53ef\u4ee5\u662f\u5355\u72ec\u78c1\u76d8\uff0c\u4e5f\u53ef\u4ee5\u662f\u786c\u76d8\u5206\u533a
\nVG(Volume Group) \u5377\u7ec4\u3002\u662fPV\u7684\u7ec4\u5408\uff0c\u53ef\u4ee5\u770b\u6210\u5355\u72ec\u7684\u903b\u8f91\u78c1\u76d8
\nLV(Logical Volume) \u903b\u8f91\u5206\u533a\u3002\u76f8\u5f53\u4e8e\u7269\u7406\u5206\u533a\u7684\/dev\/hdaX
\nPE(Physical Extent) \u7269\u7406\u8303\u56f4\u3002VG\u5355\u5143\uff0c\u7c7b\u4f3c\u4e8eRAID\u7684\u6761\u5e26\u5927\u5c0f\u3002
\n\u5f53\u591a\u4e2aPV\u7ec4\u6210\u4e00\u4e2aVG\u65f6\uff0cLVM\u4f1a\u5728\u6240\u6709PV\u4e0a\u505a\u7c7b\u4f3c\u683c\u5f0f\u5316\u7684\u52a8\u4f5c\uff0c
\n\u5c06\u6bcf\u4e2aPV\u5207\u6210\u4e00\u5757\u5757\u7684\u7a7a\u95f4\uff0c\u8fd9\u4e00\u5757\u5757\u7684\u7a7a\u95f4\u5c31\u79f0\u4e3aPE, \u901a\u5e38\u662f4MB\u3002
\nLE(Logical Extent) \u903b\u8f91\u8303\u56f4\u3002LV\u7684\u7ec4\u6210\u5355\u4f4d\u3002\u5927\u5c0f\u4e3aPE\u7684\u500d\u6570(\u901a\u5e38\u4e3a1:1)<\/p>\n

\u90a3\u4e48\uff0c\u6700\u5e38\u7528\u76843\u4e2a\u540d\u8bcd\u548c\u610f\u4e49\u5217\u8868\u5982\u4e0b\uff1a
\n\u540d\u8bcd \u610f\u4e49 \u64cd\u4f5c\u7cfb\u7edf\u5bf9\u5e94\u8bbe\u5907
\nPV \u7269\u7406\u5377 \/dev\/hdaX
\nVG \u5377\u7ec4 \/dev\/ (\u901a\u5e38\u662f\u4e2a\u76ee\u5f55)
\nLV \u903b\u8f91\u5377 \/dev\/\/<\/p>\n

\u5982\u679c\u6211\u4eec\u8981\u4f7f\u7528lvm\uff0c\u987a\u5e8f\u662fpv->vg->lv\u3002
\n\u5c31\u662f\u8bf4\uff0c\u6211\u4eec\u5148\u521b\u5efa\u4e00\u4e2a\u7269\u7406\u5377(\u5bf9\u5e94\u4e00\u4e2a\u7269\u7406\u786c\u76d8\u5206\u533a\u6216\u8005\u4e00\u4e2a\u7269\u7406\u786c\u76d8)\uff0c\u7136\u540e\u628a\u8fd9\u4e9b\u5206\u533a\/\u786c\u76d8\u52a0\u5165
\n\u4e00\u4e2a\u5377\u7ec4\u4e2d(\u76f8\u5f53\u4e8e\u4e00\u4e2a\u903b\u8f91\u4e0a\u7684\u5927\u786c\u76d8)\uff0c\u7136\u540e\u6211\u4eec\u5728\u8fd9\u4e2a\u5927\u786c\u76d8\u4e0a\u5212\u5206\u5206\u533alv(\u903b\u8f91\u4e0a\u7684\u5206\u533a\uff0c\u5c31\u662f\u903b
\n\u8f91\u5377\u8fd9\u6837\uff0c\u6211\u4eec\u628alv\u903b\u8f91\u5377\u683c\u5f0f\u5316\u4ee5\u540e\uff0c\u5c31\u53ef\u4ee5\u50cf\u4f7f\u7528\u4e00\u4e2a\u4f20\u7edf\u5206\u533a\u90a3\u6837\uff0c\u628a\u5b83\u6302\u8f7d\u5230\u4e00\u4e2a\u6302\u8f7d\u70b9\u4e0a\uff0c\u9700\u8981\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u903b\u8f91\u5377\u53ef\u4ee5\u88ab\u52a8\u6001\u7f29\u653e\u3002<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u7528\u4e00\u4e2a\u957f\u65b9\u86cb\u7cd5\u6765\u8bf4\u660e\u8fd9\u4e2a\u5bf9\u5e94\u5173\u7cfb\u3002\u7269\u7406\u786c\u76d8\u76f8\u5f53\u4e8e\u4e00\u4e2a\u957f\u65b9\u86cb\u7cd5\uff0c\u6211\u4eec\u628a\u5b83\u5207\u5272\u6210\u8bb8\u591a\u5feb\uff0c
\n\u6bcf\u4e2a\u5c0f\u5757\u76f8\u5f53\u4e8e\u4e00\u4e2apv\uff0c\u7136\u540e\u6211\u4eec\u628a\u5176\u4e2d\u7684\u67d0\u4e9bpv\u91cd\u65b0\u653e\u5728\u4e00\u8d77\uff0c\u62b9\u4e0a\u5976\u6cb9\uff0c\u90a3\u4e48\u8fd9\u4e48\u4e9b\u4e2apv\u7684\u7ec4\u5408\u5c31\u662f
\n\u4e00\u4e2a\u65b0\u7684\u86cb\u7cd5\uff0c\u4e5f\u5c31\u662fvg\u3002\u6700\u540e\uff0c\u6211\u4eec\u5207\u5272\u8fd9\u4e2a\u65b0\u86cb\u7cd5vg\uff0c\u5207\u51fa\u6765\u7684\u5c0f\u86cb\u7cd5\u5c31\u53eb\u505alv\u3002<\/p>\n

\u6709\u4e00\u70b9\u9700\u8981\u6ce8\u610f\uff0c\u5c31\u662f\/boot\u533a\u4e0d\u53ef\u4ee5\u662flvm\uff0c\u56e0\u4e3a\u5f15\u5bfc\u7a0b\u5e8flilo\/grub\u5e76\u4e0d\u80fd\u8bc6\u522blvm\uff0c\u5c31\u50cf\/boot\u540c\u6837\u4e0d\u53ef\u4ee5\u662f\u8f6fraid\u8bbe\u5907\u4e00\u6837\u3002<\/p>\n

3) \u5982\u4f55\u4f7f\u7528lvm,\u521b\u5efa\u903b\u8f91\u5377\u7684\u6d41\u7a0b\u548c\u5b9e\u4f8b
\n\u597d\u4e86\uff0c\u6211\u4eec\u6765\u521b\u5efa\u4e00\u4e2alv\u3002<\/p>\n

\u6bd4\u5982\u8bf4\uff0c\u5728\u4e00\u4e2a\u7269\u7406\u786c\u76d8\/dev\/hda\u4e0a\uff0c\u6211\u4eec\u9700\u8981\u5c06\/dev\/hda5,\/dev\/hda6\u4f5c\u4e3apv
\n1 fdisk\u5212\u5206hda5,hda6\uff0c\u5e76\u4e14\u5c06\u8fd9\u4e24\u4e2a\u5206\u533a\u7684\u6807\u5fd7(\u952e\u5165t\u6539)\u6539\u4e3a(0x)8e
\n\u7136\u540e\u7528partprobe\u901a\u77e5OS\u78c1\u76d8\u5206\u533a\u7684\u53d8\u5316
\n2 pvcreate \/dev\/hda5 \/dev\/hda6(-s xxM\u53ef\u8bbe\u5b9aPE\u5927\u5c0f)
\n\u521b\u5efapv hda5,hda6
\n3 vgcreate rootvg \/dev\/hda5 \/dev\/hda6
\n\u5c06hda5,hda6\u52a0\u5165\u903b\u8f91\u5377\u7ec4rootvg\u4e2d
\n4 lvcreate -L 100M -n lv1 rootvg
\n\u4ece\u6211\u4eec\u7684rootvg\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a100M\u7684\u903b\u8f91\u5377lv1
\n5 mkfs.ext3 \/dev\/rootvg\/lv1
\n\u683c\u5f0f\u5316\u6211\u4eec\u7684lv1\uff0c\u6587\u4ef6\u7cfb\u7edf\u7528ext3
\n6 mkdir \/mnt\/lvm;mount \/dev\/rootvg\/lv1 \/mnt\/lvm
\n\u5c06lv1\u6302\u8f7d\u5230\/mnt\/lvm\u4e0b<\/p>\n

\u597d\u4e86\uff0c\u8fd9\u6837\u4e00\u4e2a\u521b\u5efalv\u7684\u4f8b\u5b50\u5b8c\u6210<\/p>\n

4) \u5982\u4f55\u52a8\u6001\u653e\u5927\/\u7f29\u5c0f\u4e00\u4e2a\u903b\u8f91\u5377\/\u903b\u8f91\u5377\u7ec4
\n\u6211\u4eec\u5982\u4f55\u653e\u5927lv?\u6bd4\u5982\u4e0a\u9762\u7684lv1?\u6d41\u7a0b\uff1a
\n1 <\/span>lvextend -L 200M \/dev\/rootvg\/lv1
\n\u5c06lv1\u589e\u52a0200M
\n2 <\/span>ext2online \/dev\/rootvg\/lv1
\n\u8ba9lv1\u5bb9\u91cf<\/span>\u66f4\u6539\u7acb\u5373\u751f\u6548\u51cf<\/span>\u5c0flv\uff0c\u7f51\u4e0a\u5f88\u591a\u6587\u7ae0\u4ecb\u7ecd\u7684\u662fReiserFS\uff0c\u8fd9\u91cc\u6211\u4eec\u662fext3\u6587\u4ef6\u7cfb\u7edf\uff0c\u5982\u679c\u6211\u4eec\u9700\u8981\u51cf\u5c1150M\uff1a<\/p>\n

1 umount \/mnt\/lvm
\n\u8fd9\u91cc\uff0c\u9700\u8981\u5148\u5378\u8f7d\u5206\u533a
\n2 mke2fs -n \/dev\/rootvg\/lv1
\n\u8ba1\u7b97lv1\u7684block\u6570
\n\u8fd9\u91cc\u4e00\u5b9a\u8981\u52a0-n\u53c2\u6570\uff0c\u8fd9\u662f\u8ba1\u7b97lv1\u7684block\u6570\uff0c\u800c\u4e0d\u662f\u683c\u5f0f\u5316\u5206\u533a\uff0c\u6ce8\u610f\u3002
\n\u5e76\u4e14\u6ce8\u610f\uff0c\u4eceMB->KB\u8fd9\u4e9b\u7684\u8ba1\u7b97\uff0c\u90fd\u662f\u4e581024\uff0c\u4e0d\u662f1000\uff0c\u8fd9\u662f\u4e2a\u7ec6\u8282\u95ee\u9898
\n3 \u8ba1\u7b97\u51cf\u5c1150M\u540e\u7684block\u6570\u3002\u4ecemke2fs -n \/dev\/rootvg\/lv1\uff0c\u6211\u4eec\u53ef\u4ee5\u5f97\u51fa2\u4e2a\u9700\u8981\u7684\u4fe1\u606f\uff1a
\nBlock size\u548cblocks\uff0c\u8fd9\u4e24\u4e2a\u6570\u7684\u4e58\u79ef\u5c31\u662f\u5206\u533a\u5927\u5c0fA(\u5355\u4f4d\u5b57\u8282)\uff0c
\n\u6211\u4eec\u628a\u9700\u8981\u51cf\u5c0f\u7684\u5bb9\u91cf50M\u6362\u7b97\u6210\u5b57\u8282B\uff0c\u7136\u540eA-B\u7684\u7ed3\u679c\u9664\u4ee5Block size,\u5c31\u662f\u5269\u4f59\u7684block\u6570
\n4 resize2fs -f \/dev\/rootvg\/lv1 \u5269\u4f59\u7684block\u6570
\n\u8c03\u6574\u6587\u4ef6\u7cfb\u7edf\u5927\u5c0f
\n5 lvreduce -L-50M \/dev\/rootvg\/lv1
\n\u8c03\u6574lv\u5206\u533a\u5927\u5c0f\uff0c\u51cf\u5c0f50M
\n6 \u91cd\u65b0mount\uff0cdf\u5bdf\u770b\u4e00\u4e0b\u5bb9\u91cf\u7684\u51cf\u5c0f<\/p>\n

\u52a8\u6001\u52a0\u5927VG\uff1a
\n\u8fd9\u91cc\u6211\u4eec\u65b0\u589e\u4e00\u4e2aPV\u5e76\u52a0\u5165VG
\n1 fdisk\u589e\u52a0\u4e00\u4e2a(0x)8e\u6807\u5fd7\u7684\u5206\u533a\/dev\/hda7
\n2 vgextend rootvg \/dev\/hda7
\n\u597d\u4e86\uff0cvg\u589e\u5927\u4e86
\n\u7f29\u5c0f\u903b\u8f91\u5377\u7ec4VG\uff1a
\n1 \u642c\u79fbPV\u4e2d\u7684\u8d44\u6599(\u53ea\u9650\u4e8e\u540c\u4e00VG\u4e2d)
\n#pvmove [-n ] []
\n\u5982
\n#pvmove \/dev\/hda5 \/dev\/hda6
\n\u5c06VG\u4e2dpv hda5\u7684\u5185\u5bb9\u642c\u79fb\u5230hda6\u4e2d
\npvmove \/dev\/hda5(\u4e5f\u53ef\u4ee5\u8fd9\u6837\uff0clvm\u51b3\u5b9ahda2\u7684\u5185\u5bb9\u88ab\u590d\u5236\u5230\u54ea\u91cc)
\n2 vgreduce rootvg \/dev\/hda5
\n\u628avg hda5\u79fb\u9664<\/p>\n

5) \u5982\u4f55\u5220\u9664\u903b\u8f91\u5377\/\u903b\u8f91\u5377\u7ec4
\n\u5220\u9664VG\u6d41\u7a0b\uff1a<\/p>\n

1 umount \/\u6302\u63a5\u70b9
\n2 lvremove \/dev\/rootvg\/lv1
\n\u79fb\u9664\u903b\u8f91\u5377\uff0c\u8fd9\u91cc\u662flv1
\n3 vgchange -a n rootvg(\u5173\u95edrootvg)
\n4 vgremove rootvg
\n\u79fb\u9664rootvg<\/p>\n

6) lvm\u76f8\u5173\u547d\u4ee4
\n\u8fd9\u4e2a\u8868\u683c\uff0c\u4f60\u53ef\u4ee5\u5728RHCE_Study_Guide.pdf\u4e0a\u627e\u5230
\nPhysical Volume Volume Group Logical Volume
\nscan pvscan vgscan lvscan
\ncreate pvcreate vgcreate lvcreate
\ndisplay pvdispaly vgdisplay <\/span>lvdisplay
\nremove pvremove vgremove lvremove<\/p>\n","protected":false},"excerpt":{"rendered":"

PV(Physical Volume) \u7269\u7406\u5377\u3002\u53ef\u4ee5\u662f\u5355\u72ec\u78c1\u76d8\uff0c\u4e5f\u53ef\u4ee5\u662f\u786c\u76d8\u5206\u533a … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[19],"tags":[126],"class_list":["post-1401","post","type-post","status-publish","format-standard","hentry","category-site-build","tag-lvm"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/posts\/1401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/comments?post=1401"}],"version-history":[{"count":0,"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/posts\/1401\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/media?parent=1401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/categories?post=1401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.rexdf.org\/ja\/wp-json\/wp\/v2\/tags?post=1401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}