{"id":435,"date":"2026-01-26T08:50:01","date_gmt":"2026-01-26T08:50:01","guid":{"rendered":"https:\/\/blog.gpst.net.cn:4008\/?p=435"},"modified":"2026-01-28T06:24:13","modified_gmt":"2026-01-28T06:24:13","slug":"linux-lvm%e5%88%86%e5%8c%ba%e7%ae%a1%e7%90%86%e3%80%81%e6%89%a9%e5%b1%95","status":"publish","type":"post","link":"https:\/\/opshub.com.cn\/?p=435","title":{"rendered":"Linux LVM\u5206\u533a\u7ba1\u7406\u3001\u6269\u5c55"},"content":{"rendered":"\n

\u4e00\u3001LVM\u7b80\u4ecb<\/p>\n\n\n\n

LVM\u662f Logical Volume Manager(\u903b\u8f91\u5377\u7ba1\u7406)\u7684\u7b80\u5199\u3002LVM\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u786c\u76d8\u7684\u5206\u533a\u5728\u903b\u8f91\u4e0a\u96c6\u5408\uff0c\u76f8\u5f53\u4e8e\u4e00\u4e2a\u5927\u786c\u76d8\u6765\u4f7f\u7528\uff0c\u5f53\u786c\u76d8\u7684\u7a7a\u95f4\u4e0d\u591f\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u7ee7\u7eed\u5c06\u5176\u5b83\u7684\u786c\u76d8\u7684\u5206\u533a\u52a0\u5165\u5176\u4e2d\uff0c\u8fd9\u6837\u53ef\u4ee5\u5b9e\u73b0\u78c1\u76d8\u7a7a\u95f4\u7684\u52a8\u6001\u7ba1\u7406\uff0c\u76f8\u5bf9\u4e8e\u666e\u901a\u7684\u78c1\u76d8\u5206\u533a\u6709\u5f88\u5927\u7684\u7075\u6d3b\u6027\u3002<\/p>\n\n\n\n

\u4e0e\u4f20\u7edf\u7684\u78c1\u76d8\u4e0e\u5206\u533a\u76f8\u6bd4\uff0cLVM\u4e3a\u8ba1\u7b97\u673a\u63d0\u4f9b\u4e86\u66f4\u9ad8\u5c42\u6b21\u7684\u78c1\u76d8\u5b58\u50a8\u3002\u5b83\u4f7f\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u66f4\u65b9\u4fbf\u7684\u4e3a\u5e94\u7528\u4e0e\u7528\u6237\u5206\u914d\u5b58\u50a8\u7a7a\u95f4\u3002\u5728LVM\u7ba1\u7406\u4e0b\u7684\u5b58\u50a8\u5377\u53ef\u4ee5\u6309\u9700\u8981\u968f\u65f6\u6539\u53d8\u5927\u5c0f\u4e0e\u79fb\u9664(\u53ef\u80fd\u9700\u5bf9\u6587\u4ef6\u7cfb\u7edf\u5de5\u5177\u8fdb\u884c\u5347\u7ea7)\u3002LVM\u4e5f\u5141\u8bb8\u6309\u7528\u6237\u7ec4\u5bf9\u5b58\u50a8\u5377\u8fdb\u884c\u7ba1\u7406\uff0c\u5141\u8bb8\u7ba1\u7406\u5458\u7528\u66f4\u76f4\u89c2\u7684\u540d\u79f0(\u5982”sales’\u3001 ‘development’)\u4ee3\u66ff\u7269\u7406\u78c1\u76d8\u540d(\u5982’sda’\u3001’sdb’)\u6765\u6807\u8bc6\u5b58\u50a8\u5377\u3002<\/p>\n\n\n\n

\u4e8c\u3001 LVM\u57fa\u672c\u672f\u8bed<\/p>\n\n\n\n

\u7269\u7406\u5b58\u50a8\u4ecb\u8d28\uff08The physical media\uff09\uff1a\u8fd9\u91cc\u6307\u7cfb\u7edf\u7684\u5b58\u50a8\u8bbe\u5907\uff1a\u786c\u76d8\uff0c\u5982\uff1a\/dev\/hda1\u3001\/dev\/sda\u7b49\u7b49\uff0c\u662f\u5b58\u50a8\u7cfb\u7edf\u6700\u4f4e\u5c42\u7684\u5b58\u50a8\u5355\u5143\u3002<\/p>\n\n\n\n

\u7269\u7406\u5377\uff08physical volume\uff09\uff1a\u7269\u7406\u5377\u5c31\u662f\u6307\u786c\u76d8\u5206\u533a\u6216\u4ece\u903b\u8f91\u4e0a\u4e0e\u78c1\u76d8\u5206\u533a\u5177\u6709\u540c\u6837\u529f\u80fd\u7684\u8bbe\u5907(\u5982RAID)\uff0c\u662fLVM\u7684\u57fa\u672c\u5b58\u50a8\u903b\u8f91\u5757\uff0c\u4f46\u548c\u57fa\u672c\u7684\u7269\u7406\u5b58\u50a8\u4ecb\u8d28\uff08\u5982\u5206\u533a\u3001\u78c1\u76d8\u7b49\uff09\u6bd4\u8f83\uff0c\u5374\u5305\u542b\u6709\u4e0eLVM\u76f8\u5173\u7684\u7ba1\u7406\u53c2\u6570\u3002<\/p>\n\n\n\n

\u5377\u7ec4\uff08Volume Group\uff09\uff1aLVM\u5377\u7ec4\u7c7b\u4f3c\u4e8e\u975eLVM\u7cfb\u7edf\u4e2d\u7684\u7269\u7406\u786c\u76d8\uff0c\u5176\u7531\u7269\u7406\u5377\u7ec4\u6210\u3002\u53ef\u4ee5\u5728\u5377\u7ec4\u4e0a\u521b\u5efa\u4e00\u4e2a\u6216\u591a\u4e2a\u201cLVM\u5206\u533a\u201d\uff08\u903b\u8f91\u5377\uff09\uff0cLVM\u5377\u7ec4\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u7269\u7406\u5377\u7ec4\u6210\u3002<\/p>\n\n\n\n

\u903b\u8f91\u5377\uff08logical volume\uff09\uff1aLVM\u7684\u903b\u8f91\u5377\u7c7b\u4f3c\u4e8e\u975eLVM\u7cfb\u7edf\u4e2d\u7684\u786c\u76d8\u5206\u533a\uff0c\u5728\u903b\u8f91\u5377\u4e4b\u4e0a\u53ef\u4ee5\u5efa\u7acb\u6587\u4ef6\u7cfb\u7edf(\u6bd4\u5982\/home\u6216\u8005\/usr\u7b49)\u3002<\/p>\n\n\n\n

PE\uff08physical extent\uff09\uff1a\u6bcf\u4e00\u4e2a\u7269\u7406\u5377\u88ab\u5212\u5206\u4e3a\u79f0\u4e3aPE(Physical Extents)\u7684\u57fa\u672c\u5355\u5143\uff0c\u5177\u6709\u552f\u4e00\u7f16\u53f7\u7684PE\u662f\u53ef\u4ee5\u88abLVM\u5bfb\u5740\u7684\u6700\u5c0f\u5355\u5143\u3002PE\u7684\u5927\u5c0f\u662f\u53ef\u914d\u7f6e\u7684\uff0c\u9ed8\u8ba4\u4e3a4MB\u3002<\/p>\n\n\n\n

LE\uff08logical extent\uff09\uff1a\u903b\u8f91\u5377\u4e5f\u88ab\u5212\u5206\u4e3a\u88ab\u79f0\u4e3aLE(Logical Extents) \u7684\u53ef\u88ab\u5bfb\u5740\u7684\u57fa\u672c\u5355\u4f4d\u3002\u5728\u540c\u4e00\u4e2a\u5377\u7ec4\u4e2d\uff0cLE\u7684\u5927\u5c0f\u548cPE\u662f\u76f8\u540c\u7684\uff0c\u5e76\u4e14\u4e00\u4e00\u5bf9\u5e94\u3002<\/p>\n\n\n\n

\u7b80\u5355\u6765\u8bf4\u5c31\u662f\uff1a<\/p>\n\n\n\n

PV:\u662f\u7269\u7406\u7684\u78c1\u76d8\u5206\u533a<\/p>\n\n\n\n

VG:LVM\u4e2d\u7684\u7269\u7406\u7684\u78c1\u76d8\u5206\u533a\uff0c\u4e5f\u5c31\u662fPV\uff0c\u5fc5\u987b\u52a0\u5165VG\uff0c\u53ef\u4ee5\u5c06VG\u7406\u89e3\u4e3a\u4e00\u4e2a\u4ed3\u5e93\u6216\u8005\u662f\u51e0\u4e2a\u5927\u7684\u786c\u76d8\u3002<\/p>\n\n\n\n

LV\uff1a\u4e5f\u5c31\u662f\u4eceVG\u4e2d\u5212\u5206\u7684\u903b\u8f91\u5206\u533a<\/p>\n\n\n\n

\u4e09\u3001\u521b\u5efa\u548c\u7ba1\u7406LVM<\/p>\n\n\n\n

1\u3001\u663e\u793a\u786c\u76d8\u53ca\u6240\u5c5e\u5206\u533a\u60c5\u51b5\u3002<\/p>\n\n\n\n

fidsk  \/dev\/sdb<\/p>\n\n\n\n

Command (m for help): p   ##\u663e\u793a\u78c1\u76d8\u4fe1\u606f<\/p>\n\n\n\n

2\u3001\u589e\u52a0\u4e00\u4e2a\u5206\u533a\u7684\u64cd\u4f5c<\/p>\n\n\n\n

\u590d\u5236\u4ee3\u7801<\/p>\n\n\n\n

Command (m for help): n ##\u521b\u5efa\u65b0\u7684\u5206\u533a<\/p>\n\n\n\n

Command action<\/p>\n\n\n\n

   e   extended<\/p>\n\n\n\n

   p   primary partition (1-4)<\/p>\n\n\n\n

p ##\u5206\u533a\u7c7b\u578b\u4e3a\u4e3b\u5206\u533a<\/p>\n\n\n\n

Partition number (1-4): 1  ##\u4e3b\u5206\u533a\u5206\u5757<\/p>\n\n\n\n

First cylinder (1-243201, default 1):<\/p>\n\n\n\n

Using default value 1  ##\u8d77\u59cb\u5757<\/p>\n\n\n\n

Last cylinder, +cylinders or +size{K,M,G} (1-243201, default 243201): ##\u7ed3\u675f\u5757<\/p>\n\n\n\n

Using default value 243201<\/p>\n\n\n\n

Command (m for help): t ##\u4fee\u6539\u5206\u533a\u683c\u5f0f<\/p>\n\n\n\n

Selected partition 1 ##\u53ea\u6709\u4e00\u5757\u4e3b\u5206\u533a<\/p>\n\n\n\n

Hex code (type L to list codes): 8e ##\u7c7b\u578b\u6539\u6210LVM<\/p>\n\n\n\n

Changed system type of partition 1 to 8e (Linux LVM)<\/p>\n\n\n\n

Command (m for help): p  ##\u67e5\u770b\u4fee\u6539\u7684\u60c5\u51b5<\/p>\n\n\n\n

Command (m for help): w ##\u4fdd\u5b58<\/p>\n\n\n\n

\u590d\u5236\u4ee3\u7801<\/p>\n\n\n\n

3\u3001\u521b\u5efa\u7269\u7406\u5377PV<\/p>\n\n\n\n

pvcreate \/dev\/sdb1<\/p>\n\n\n\n

  Physical volume “\/dev\/sdb1” successfully created<\/p>\n\n\n\n

##\u67e5\u770b\u5df2\u7ecf\u5b58\u5728\u7684PV<\/p>\n\n\n\n

pvdisplay<\/p>\n\n\n\n

4\u3001\u521b\u5efa\u5377\u7ec4VG<\/p>\n\n\n\n

vgcreate vg_server1 \/dev\/sdb1<\/p>\n\n\n\n

  Volume group “vg_server1” successfully created<\/p>\n\n\n\n

##\u67e5\u770b\u5df2\u7ecf\u5b58\u5728\u7684VG<\/p>\n\n\n\n

vgdisplay<\/p>\n\n\n\n

5\u3001\u521b\u5efa\u903b\u8f91\u5377lV<\/p>\n\n\n\n

lvcreate -L 50G -n local vg_server1<\/p>\n\n\n\n

  Logical volume “local” created<\/p>\n\n\n\n

##\u67e5\u770b\u5df2\u7ecf\u5b58\u5728\u7684LV<\/p>\n\n\n\n

lvdisplay<\/p>\n\n\n\n

6\u3001\u683c\u5f0f\u5316<\/p>\n\n\n\n

mkfs -t ext3  \/dev\/vg_server1\/local<\/p>\n\n\n\n

#\u67e5\u770b\u78c1\u76d8\u60c5\u51b5<\/p>\n\n\n\n

fdisk -l<\/p>\n\n\n\n

7\u3001\u6302\u8f7d<\/p>\n\n\n\n

mount \/dev\/vg_server1\/local \/usr\/local\/<\/p>\n\n\n\n

##\u67e5\u770b\u6302\u8f7d\u60c5\u51b5<\/p>\n\n\n\n

df -h<\/p>\n\n\n\n

8\u3001\u5199\u5165\u5f00\u673a\u81ea\u52a8\u6302\u8f7d<\/p>\n\n\n\n

\u590d\u5236\u4ee3\u7801<\/p>\n\n\n\n

vi \/etc\/fstab<\/p>\n\n\n\n

#\u52a0\u5165\u4e00\u884c<\/p>\n\n\n\n

\/dev\/mapper\/vg_skimoserver1-lv_local \/usr\/local            ext3    defaults        1 2<\/p>\n\n\n\n

#\u6d4b\u8bd5\u6302\u8f7d<\/p>\n\n\n\n

umount \/usr\/local\/<\/p>\n\n\n\n

mount -a<\/p>\n\n\n\n

#\u6ca1\u51fa\u73b0\u62a5\u9519\u8bf4\u660e\u6302\u5728\u6210\u529f<\/p>\n\n\n\n

#\u5982\u679c\u5931\u8d25\uff0c\u7cfb\u7edf\u542f\u52a8\u6240\u6709\u78c1\u76d8\u90fd\u4e0d\u80fd\u6b63\u5e38\u6302\u5728\uff0c\u53ef\u4ee5\u7528root\u7528\u6237\u767b\u5f55\u540e\u53d6\u6d88\u6240\u6709\u6302\u5728\uff0c\u7136\u540e\u91cd\u65b0\u4fee\u6539\/etc\/fstab<\/p>\n\n\n\n

mount \u2013o remount,rw\/<\/p>\n\n\n\n

\u590d\u5236\u4ee3\u7801<\/p>\n\n\n\n

\u56db\u3001\u6269\u5bb9\u5206\u533a<\/p>\n\n\n\n

1\u3001\u589e\u52a010G\u7684\u5bb9\u91cf<\/p>\n\n\n\n

lvextend -L +10G -f -r \/dev\/vg_server1\/local<\/p>\n\n\n\n

2\u3001\u6269\u5c55\u523080G\u7684\u5bb9\u91cf<\/p>\n\n\n\n

lvextend -L 80G -f -r \/dev\/vg_server1\/local<\/p>\n\n\n\n

\u4e94\u3001\u51cf\u5c11\u5206\u533a<\/p>\n\n\n\n

#\u51cf\u5c11lv\u7a7a\u95f4\u7684\u64cd\u4f5c\u662f\u6709\u98ce\u9669\u7684\uff0c\u64cd\u4f5c\u4e4b\u524d\u4e00\u5b9a\u8981\u505a\u597d\u5907\u4efd\uff0c\u4ee5\u514d\u6570\u636e\u4e22\u5931\u3002\u8981\u51cf\u5c11\u4e00\u4e2aLV\u7684\u7a7a\u95f4\uff0c\u5fc5\u987b\u5148\u51cf\u5c11\u4e4b\u4e0a\u7684\u6587\u4ef6\u7cfb\u7edf\u7684\u5927\u5c0f<\/p>\n\n\n\n

#\u53d6\u6d88\u6302\u8f7d<\/p>\n\n\n\n

umount \/dev\/vg_server1\/local<\/p>\n\n\n\n

1\u3001\u7f29\u51cf\u523080G\u7684\u5bb9\u91cf<\/p>\n\n\n\n

e2fsck -f \/dev\/vg_server1\/local<\/p>\n\n\n\n

resize2fs \/dev\/vg_server1\/local 60G<\/p>\n\n\n\n

2\u3001\u51cf\u5c0f10G\u7684\u5bb9\u91cf<\/p>\n\n\n\n

lvreduce -L -10G -f -r \/dev\/vg_server1\/local<\/p>\n\n\n\n

\u516d\u3001\u5220\u9664\u4e00\u4e2a\u5206\u533a\u7684\u64cd\u4f5c<\/p>\n\n\n\n

fidsk  \/dev\/sdb<\/p>\n\n\n\n

Command (m for help): d   \/\/\u5220\u9664<\/p>\n\n\n\n

Command (m for help): w   \/\/\u4fdd\u5b58<\/p>\n\n\n\n

\u4e03\u3001parted \u5220\u9664\u5206\u533a\u7684\u64cd\u4f5c<\/p>\n\n\n\n

parted \/dev\/vdc<\/p>\n\n\n\n

(parted) select \/dev\/vdc<\/p>\n\n\n\n

(parted) print<\/p>\n\n\n\n

(parted) rm 1<\/p>\n\n\n\n

(parted) quit<\/p>\n\n\n\n

Information: You may need to update \/etc\/fstab.(\u4e0d\u9700\u8981update<\/em>\u3002parted\u547d\u4ee4\u662f\u5b9e\u65f6\u751f\u6548\u7684\u3002\u5206\u533a\u547d\u4ee4\u5b8c\u6210\u540e\u5df2\u7ecf\u5c06\u5206\u533a\u8868\u6570\u636e\u5199\u5165\u4e86\u786c\u76d8\u3002)<\/p>\n\n\n\n

partprobe<\/p>\n\n\n\n

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++<\/p>\n\n\n\n

\u6269\u5bb9:\n1. fdisk \/dev\/sdb\n2. \u5168\u91cf\u521b\u5efa\u5206\u533a\/dev\/sdb1,\u5206\u533a\u683c\u5f0ft \u8f6c\u6362\u62108e\uff08lvm\uff09,\u4fdd\u5b58\u9000\u51fa\n3. pvcreate \/dev\/sdb1\n\u5982\u51fa\u73b0\uff1a\nWARNING: ext4 signature detected on \/dev\/vdb1 at offset 1080. Wipe it? [y\/n]: y\n  Wiping ext4 signature on \/dev\/vdb1.\n  Physical volume \"\/dev\/vdb1\" successfully created.\n\u4e0d\u8981\u7d27\uff0c\u6309y\u786e\u8ba4\u5373\u53ef\u3002\n4. vgextend <\u67d0\u4e2avg> \/dev\/sdb1\n5. lvextend -L +XG <\u67d0\u4e2alv> \u6216\u8005 lvextend -l +100%FREE <\u67d0\u4e2alv>\n6. growfs <\u67d0\u4e2alv> \u6216\u8005 xfs_growfs <\u67d0\u4e2alv>\n*\u5bf9\u4e8eext4\uff1aresize2fs <\u67d0\u4e2alv>\n\n\n\u5982\u679c\u62a5\u9519\uff1a\n[root@iZa8add9iygscyZ home]# xfs_growfs \/dev\/vg01\/lv01\nxfs_growfs: \/dev\/vg01\/lv01 is not a mounted XFS filesystem\n\n\n[root@iZa8add9iygscyZ home]# lsblk -o UUID,NAME,PATH,FSTYPE,MOUNTPOINT\nUUID                                   NAME          PATH                  FSTYPE      MOUNTPOINT\n                                       vda           \/dev\/vda                          \nc44aa0fa-cde1-4f13-ac86-e86a243bd50c   \u251c\u2500vda1        \/dev\/vda1             ext4        \/boot\ne663002b-3dcf-40d0-a0f0-ef5f2921f44c   \u2514\u2500vda2        \/dev\/vda2             ext4        \/\n                                       vdb           \/dev\/vdb                          \nZeCAnE-UtVh-nSNZ-hede-CIh3-n0VR-Ntpd69 \u2514\u2500vdb1        \/dev\/vdb1             LVM2_member\n91f96e53-f0b5-4ee5-92fc-20ea36542158     \u2514\u2500vg01-lv01 \/dev\/mapper\/vg01-lv01 xfs         \/home\n                                       vdc           \/dev\/vdc                          \n1lT02E-eX0u-L2k3-ATYO-4VPH-3NsU-JU1nM9 \u2514\u2500vdc1        \/dev\/vdc1             LVM2_member\n91f96e53-f0b5-4ee5-92fc-20ea36542158     \u2514\u2500vg01-lv01 \/dev\/mapper\/vg01-lv01 xfs         \/home\n\u67e5\u770b\u683c\u5f0f\uff1a\u662fxfs\n\u6302\u8f7d\u70b9\uff1a\u662f\/home\n\u89e3\u51b3\u65b9\u6cd5\uff1axfs_growfs \/home\n\n\n\n\n\u6302\u76d8\uff1a\n1.lsblk #\u67e5\u770b\u78c1\u76d8\u5206\u533a\u4fe1\u606f\n2.parted -l\n3.parted \/dev\/sdb\n(parted) mklabel gpt #\u5c06\u78c1\u76d8\u683c\u5f0f\u8f6c\u4e3agpt\n(parted) mkpart primary 0 215GB #\u521b\u5efa\u4e3b\u5206\u533a\uff0c\u8fd9\u4e2a\u6570\u5b57\u6839\u636eparted -l\n(parted) set 1 lvm on #\u8bbe\u7f6elvm\n(parted) print #\u663e\u793a\u78c1\u76d8\u4fe1\u606f\n(parted) quit\n4. lsblk #\u73b0\u5728\u6709\u4e86sdb1\ntips\uff1a \u521b\u5efa\u591a\u5206\u533a\n\u8bbe\u7f6e\u5206\u533a\u5355\u4f4d\uff1a(parted) unit MB (\u6216\u8005GB\uff0cTB)\n\u5206\u533a\uff1a\uff08parted\uff09mkpart primary 1 500\n\u5206\u533a\uff1a\uff08parted\uff09mkpart primary 501 1000\n\u5206\u533a\uff1a\uff08parted\uff09mkpart logical 1001 2000\nlsblk\n5. \u521b\u5efapv\uff0cvg\u548clv\npvcreate -v \/dev\/sdb1\nvgcreate -s 4M vg01 \/dev\/sdb1\nlvcreate -l 100%FREE -n lv01 vg01\n6.\u683c\u5f0f\u5316\u6587\u4ef6\u7cfb\u7edf\nmkfs.xfs \/dev\/vg01\/lv01\n7.\u521b\u5efa\u76ee\u5f55\u5e76\u6302\u8f7d\nmkdir \/data\nmount \/dev\/vg01\/lv01 \/data\n8.\u5b9e\u73b0\u5f00\u673a\u6302\u8f7d\/etc\/fstab\necho \"\/dev\/mapper\/vg01-lv01 \/data xfs defaults 0 0\" >>\/etc\/fstab<\/code><\/pre>\n\n\n\n
[root@linux3 ~]# mkfs.xfs \/dev\/vdb1<\/p>\n\n\n\n
mkfs.xfs: \/dev\/vdb1 appears to contain an existing filesystem (ext4).<\/p>\n\n\n\n
mkfs.xfs: Use the -f option to force overwrite.<\/p>\n\n\n\n
[root@linux3 ~]# wipefs -a \/dev\/vdb1 \uff08\u89e3\u51b3\u65b9\u6cd5\uff0c\u4f7f\u7528wipefs \u547d\u4ee4\u6765\u6e05\u9664\u5206\u533a\u7684\u6587\u4ef6\u7cfb\u7edf\u6807\u7b7e\uff09<\/p>\n\n\n\n
\/dev\/vdb1: 2 bytes were erased at offset 0x00000438 (ext4): 53 ef<\/p>\n\n\n\n
[root@linux3 ~]# mkfs.xfs \/dev\/vdb1<\/p>\n\n\n\n
meta-data=\/dev\/vdb1              isize=512    agcount=4, agsize=32767936 blks<\/p>\n\n\n\n
         =                       sectsz=512   attr=2, projid32bit=1<\/p>\n\n\n\n
         =                       crc=1        finobt=0, sparse=0<\/p>\n\n\n\n
data     =                       bsize=4096   blocks=131071744, imaxpct=25<\/p>\n\n\n\n
         =                       sunit=0      swidth=0 blks<\/p>\n\n\n\n
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1<\/p>\n\n\n\n
log      =internal log           bsize=4096   blocks=63999, version=2<\/p>\n\n\n\n
         =                       sectsz=512   sunit=0 blks, lazy-count=1<\/p>\n\n\n\n
realtime =none                   extsz=4096   blocks=0, rtextents=0<\/p>\n\n\n\n
[root@linux3 ~]# lsblk -o UUID,NAME,FSTYPE,SIZE,MOUNTPOINT<\/p>\n\n\n\n
UUID                                   NAME          FSTYPE       SIZE MOUNTPOINT<\/p>\n\n\n\n
                                       vdb                        500G<\/p>\n\n\n\n
9c1305ac-7b99-4dcd-b650-9937ff751f35   \u2514\u2500vdb1        xfs          500G<\/p>\n\n\n\n
                                       vdc                        500G<\/p>\n\n\n\n
FLqhN2-WoLi-64ax-5upt-gC13-lvJj-HdclzN \u2514\u2500vdc1        LVM2_member  500G<\/p>\n\n\n\n
3286d848-1b1e-4906-b763-07bbb001e9f1     \u2514\u2500vg01-lv01 xfs          500G \/home<\/p>\n\n\n\n
                                       vda                         40G<\/p>\n\n\n\n
b3e7f9e5-cc01-4b94-bd96-8fd0e91ae424   \u251c\u2500vda2        ext4          39G \/<\/p>\n\n\n\n
0fb0d06f-4814-42ed-98c5-369e4ed65008   \u2514\u2500vda1        ext4           1G \/boot<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u3001LVM\u7b80\u4ecb LVM\u662f Logical Volume Manager(\u903b\u8f91\u5377\u7ba1\u7406)\u7684\u7b80\u5199\u3002LVM\u5c06\u4e00\u4e2a\u6216\u591a\u4e2a\u786c\u76d8\u7684\u5206\u533a\u5728\u903b\u8f91\u4e0a\u96c6\u5408\uff0c\u76f8\u5f53\u4e8e\u4e00\u4e2a\u5927\u786c\u76d8\u6765\u4f7f\u7528\uff0c\u5f53\u786c\u76d8\u7684\u7a7a\u95f4\u4e0d\u591f\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u7ee7\u7eed\u5c06\u5176\u5b83\u7684\u786c\u76d8\u7684\u5206\u533a\u52a0\u5165\u5176\u4e2d\uff0c\u8fd9\u6837\u53ef\u4ee5\u5b9e\u73b0\u78c1\u76d8\u7a7a\u95f4\u7684\u52a8\u6001\u7ba1\u7406\uff0c\u76f8\u5bf9\u4e8e\u666e\u901a\u7684\u78c1\u76d8\u5206\u533a\u6709\u5f88\u5927\u7684\u7075\u6d3b\u6027\u3002 \u4e0e\u4f20\u7edf\u7684\u78c1\u76d8\u4e0e\u5206\u533a\u76f8\u6bd4\uff0cLVM\u4e3a\u8ba1\u7b97\u673a\u63d0\u4f9b\u4e86\u66f4\u9ad8\u5c42\u6b21\u7684\u78c1\u76d8\u5b58\u50a8\u3002\u5b83\u4f7f\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u66f4\u65b9\u4fbf\u7684\u4e3a\u5e94\u7528\u4e0e\u7528\u6237\u5206\u914d\u5b58\u50a8\u7a7a\u95f4\u3002\u5728LVM\u7ba1\u7406\u4e0b\u7684\u5b58\u50a8\u5377\u53ef\u4ee5\u6309\u9700\u8981\u968f\u65f6\u6539\u53d8\u5927\u5c0f\u4e0e\u79fb\u9664(\u53ef\u80fd\u9700\u5bf9\u6587\u4ef6\u7cfb\u7edf\u5de5\u5177\u8fdb\u884c\u5347\u7ea7)\u3002LVM\u4e5f\u5141\u8bb8\u6309\u7528\u6237\u7ec4\u5bf9\u5b58\u50a8\u5377\u8fdb\u884c\u7ba1\u7406\uff0c\u5141\u8bb8\u7ba1\u7406\u5458\u7528\u66f4\u76f4\u89c2\u7684\u540d\u79f0(\u5982”sales’\u3001 ‘development’)\u4ee3\u66ff\u7269\u7406\u78c1\u76d8\u540d(\u5982’sda’\u3001’sdb’)\u6765\u6807\u8bc6\u5b58\u50a8\u5377\u3002 \u4e8c\u3001 LVM\u57fa\u672c\u672f\u8bed \u7269\u7406\u5b58\u50a8\u4ecb\u8d28\uff08The physical media\uff09\uff1a\u8fd9\u91cc\u6307\u7cfb\u7edf\u7684\u5b58\u50a8\u8bbe\u5907\uff1a\u786c\u76d8\uff0c\u5982\uff1a\/dev\/hda1\u3001\/dev\/sda\u7b49\u7b49\uff0c\u662f\u5b58\u50a8\u7cfb\u7edf\u6700\u4f4e\u5c42\u7684\u5b58\u50a8\u5355\u5143\u3002 \u7269\u7406\u5377\uff08physical volume\uff09\uff1a\u7269\u7406\u5377\u5c31\u662f\u6307\u786c\u76d8\u5206\u533a\u6216\u4ece\u903b\u8f91\u4e0a\u4e0e\u78c1\u76d8\u5206\u533a\u5177\u6709\u540c\u6837\u529f\u80fd\u7684\u8bbe\u5907(\u5982RAID)\uff0c\u662fLVM\u7684\u57fa\u672c\u5b58\u50a8\u903b\u8f91\u5757\uff0c\u4f46\u548c\u57fa\u672c\u7684\u7269\u7406\u5b58\u50a8\u4ecb\u8d28\uff08\u5982\u5206\u533a\u3001\u78c1\u76d8\u7b49\uff09\u6bd4\u8f83\uff0c\u5374\u5305\u542b\u6709\u4e0eLVM\u76f8\u5173\u7684\u7ba1\u7406\u53c2\u6570\u3002 \u5377\u7ec4\uff08Volume Group\uff09\uff1aLVM\u5377\u7ec4\u7c7b\u4f3c\u4e8e\u975eLVM\u7cfb\u7edf\u4e2d\u7684\u7269\u7406\u786c\u76d8\uff0c\u5176\u7531\u7269\u7406\u5377\u7ec4\u6210\u3002\u53ef\u4ee5\u5728\u5377\u7ec4\u4e0a\u521b\u5efa\u4e00\u4e2a\u6216\u591a\u4e2a\u201cLVM\u5206\u533a\u201d\uff08\u903b\u8f91\u5377\uff09\uff0cLVM\u5377\u7ec4\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u7269\u7406\u5377\u7ec4\u6210\u3002 \u903b\u8f91\u5377\uff08logical volume\uff09\uff1aLVM\u7684\u903b\u8f91\u5377\u7c7b\u4f3c\u4e8e\u975eLVM\u7cfb\u7edf\u4e2d\u7684\u786c\u76d8\u5206\u533a\uff0c\u5728\u903b\u8f91\u5377\u4e4b\u4e0a\u53ef\u4ee5\u5efa\u7acb\u6587\u4ef6\u7cfb\u7edf(\u6bd4\u5982\/home\u6216\u8005\/usr\u7b49)\u3002 PE\uff08physical extent\uff09\uff1a\u6bcf\u4e00\u4e2a\u7269\u7406\u5377\u88ab\u5212\u5206\u4e3a\u79f0\u4e3aPE(Physical Extents)\u7684\u57fa\u672c\u5355\u5143\uff0c\u5177\u6709\u552f\u4e00\u7f16\u53f7\u7684PE\u662f\u53ef\u4ee5\u88abLVM\u5bfb\u5740\u7684\u6700\u5c0f\u5355\u5143\u3002PE\u7684\u5927\u5c0f\u662f\u53ef\u914d\u7f6e\u7684\uff0c\u9ed8\u8ba4\u4e3a4MB\u3002 LE\uff08logical extent\uff09\uff1a\u903b\u8f91\u5377\u4e5f\u88ab\u5212\u5206\u4e3a\u88ab\u79f0\u4e3aLE(Logical Extents) \u7684\u53ef\u88ab\u5bfb\u5740\u7684\u57fa\u672c\u5355\u4f4d\u3002\u5728\u540c\u4e00\u4e2a\u5377\u7ec4\u4e2d\uff0cLE\u7684\u5927\u5c0f\u548cPE\u662f\u76f8\u540c\u7684\uff0c\u5e76\u4e14\u4e00\u4e00\u5bf9\u5e94\u3002 \u7b80\u5355\u6765\u8bf4\u5c31\u662f\uff1a PV:\u662f\u7269\u7406\u7684\u78c1\u76d8\u5206\u533a VG:LVM\u4e2d\u7684\u7269\u7406\u7684\u78c1\u76d8\u5206\u533a\uff0c\u4e5f\u5c31\u662fPV\uff0c\u5fc5\u987b\u52a0\u5165VG\uff0c\u53ef\u4ee5\u5c06VG\u7406\u89e3\u4e3a\u4e00\u4e2a\u4ed3\u5e93\u6216\u8005\u662f\u51e0\u4e2a\u5927\u7684\u786c\u76d8\u3002 LV\uff1a\u4e5f\u5c31\u662f\u4eceVG\u4e2d\u5212\u5206\u7684\u903b\u8f91\u5206\u533a \u4e09\u3001\u521b\u5efa\u548c\u7ba1\u7406LVM 1\u3001\u663e\u793a\u786c\u76d8\u53ca\u6240\u5c5e\u5206\u533a\u60c5\u51b5\u3002 fidsk  \/dev\/sdb Command (m for help): p   ##\u663e\u793a\u78c1\u76d8\u4fe1\u606f 2\u3001\u589e\u52a0\u4e00\u4e2a\u5206\u533a\u7684\u64cd\u4f5c \u590d\u5236\u4ee3\u7801 Command (m for help): n ##\u521b\u5efa\u65b0\u7684\u5206\u533a Command action    e   extended    p   primary […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-435","post","type-post","status-publish","format-standard","hentry","category-9"],"_links":{"self":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/435","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=435"}],"version-history":[{"count":2,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/435\/revisions"}],"predecessor-version":[{"id":616,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/435\/revisions\/616"}],"wp:attachment":[{"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=435"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=435"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/opshub.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=435"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}