系统大全为您提供1, 介绍 　　LVM是逻辑盘卷管理(Logical Volume Manager)的简称，它是Linux环境下对磁盘分区进行管理的一种机制，LVM是建立在硬盘和分区之上的一个逻辑层，来提高磁盘分 LVM 　　区管理的灵活性。前面谈到，LVM是在磁盘分区和文件系统之间添加的一个逻辑层，来为文件系统屏蔽下层磁盘分区布局，提供一个抽象的盘卷，在盘卷上建立文件系统。物理卷(physical volume)物理卷就是指硬盘分区或从逻辑上与磁盘分区具有同样功能的设备(如RAID)，是LVM的基本存储逻辑块，但和基本的物理存储介质(如分区、磁盘等)比较，却包含有与LVM相关的管理参数。 　　2，创建 　　[root@cn-iss-install-01 mapper]# fdisk -l 　　[root@cn-iss-install-01 mapper]# fdisk /dev/sdb 　　Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel 　　Building a new DOS disklabel with disk identifier 0x874c7742. 　　Changes will remain in memory only, until you decide to write them. 　　After that, of course, the previous content won't be recoverable. 　　Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) 　　WARNING: DOS-compatible mode is deprecated. It's strongly recommended to 　　switch off the mode (command 'c') and change display units to 　　sectors (command 'u'). 　　Command (m for help): m 　　Command action 　　a toggle a bootable flag 　　b edit bsd disklabel 　　c toggle the dos compatibility flag 　　d delete a partition 　　l list known partition types 　　m print this menu 　　n add a new partition 　　o create a new empty DOS partition table 　　p print the partition table 　　q quit without saving changes 　　s create a new empty Sun disklabel 　　t change a partition's system id 　　u change display/entry units 　　v verify the partition table 　　w write table to disk and exit 　　x extra functionality (experts only) 　　Command (m for help): p 　　Disk /dev/sdb: 96.6 GB, 96636764160 bytes 　　255 heads, 63 sectors/track, 11748 cylinders 　　Units = cylinders of 16065 * 512 = 8225280 bytes 　　Sector size (logical/physical): 512 bytes / 512 bytes 　　I/O size (minimum/optimal): 512 bytes / 512 bytes 　　Disk identifier: 0x874c7742 　　Device Boot Start End Blocks Id System 　　Command (m for help): n 　　Command action 　　e extended 　　p primary partition (1-4) 　　p 　　Partition number (1-4): 1 　　First cylinder (1-11748, default 1): 　　Using default value 1 　　Last cylinder, +cylinders or +size{K,M,G} (1-11748, default 11748): +80G 　　Command (m for help): p 　　Disk /dev/sdb: 96.6 GB, 96636764160 bytes 　　255 heads, 63 sectors/track, 11748 cylinders 　　Units = cylinders of 16065 * 512 = 8225280 bytes 　　Sector size (logical/physical): 512 bytes / 512 bytes 　　I/O size (minimum/optimal): 512 bytes / 512 bytes 　　Disk identifier: 0x874c7742 　　Device Boot Start End Blocks Id System 　　/dev/sdb1 1 10444 83891398+ 5 Extended 　　Command (m for help): w 　　The partition table has been altered! 　　Calling ioctl() to re-read partition table. 　　Syncing disks. 　　[root@cn-iss-install-01 mapper]#reboot or 　　[root@cn-iss-install-01 Packages]# partprobe 　　[root@cn-iss-install-01 ~]# fdisk -l 　　Disk /dev/sda: 17.2 GB, 17179869184 bytes 　　64 heads, 32 sectors/track, 16384 cylinders 　　Units = cylinders of 2048 * 512 = 1048576 bytes 　　Sector size (logical/physical): 512 bytes / 512 bytes 　　I/O size (minimum/optimal): 512 bytes / 512 bytes 　　Disk identifier: 0x0005b1c0 　　Device Boot Start End Blocks Id System 　　/dev/sda1 * 2 251 256000 83 Linux 　　Partition 1 does not end on cylinder boundary. 　　/dev/sda2 252 16384 16520192 8e Linux LVM 　　Partition 2 does not end on cylinder boundary. 　　Disk /dev/sdb: 96.6 GB, 96636764160 bytes 　　255 heads, 63 sectors/track, 11748 cylinders 　　Units = cylinders of 16065 * 512 = 8225280 bytes 　　Sector size (logical/physical): 512 bytes / 512 bytes 　　I/O size (minimum/optimal): 512 bytes / 512 bytes 　　Disk identifier: 0x874c7742 　　Device Boot Start End Blocks Id System 　　/dev/sdb1 1 10444 83891398+ 5 Extended 　　Disk /dev/mapper/VG00-LV_rootfs: 16.4 GB, 16374562816 bytes 　　255 heads, 63 sectors/track, 1990 cylinders 　　Units = cylinders of 16065 * 512 = 8225280 bytes 　　Sector size (logical/physical): 512 bytes / 512 bytes 　　I/O size (minimum/optimal): 512 bytes / 512 bytes 　　Disk identifier: 0x00000000 　　Disk /dev/mapper/VG00-LV_swap: 536 MB, 536870912 bytes 　　255 heads, 63 sectors/track, 65 cylinders 　　Units = cylinders of 16065 * 512 = 8225280 bytes 　　Sector size (logical/physical): 512 bytes / 512 bytes 　　I/O size (minimum/optimal): 512 bytes / 512 bytes 　　Disk identifier: 0x00000000 　　[root@cn-iss-install-01 ~]# 　　[root@cn-iss-install-01 Packages]# pvcreate /dev/sdb1 　　Writing physical volume data to disk "/dev/sdb1" 　　Physical volume "/dev/sdb1" successfully created 　　[root@cn-iss-install-01 Packages]# 　　[root@cn-iss-install-01 Packages]# vgcreate vg03 /dev/sdb1 　　Volume group "vg03" successfully created 　　[root@cn-iss-install-01 Packages]# lvcreate -L 83G -n vgdata vg03
　[root@cn-iss-install-01 Packages]# mke2fs /dev/vg03/vgdata 　　mke2fs 1.41.12 (17-May-2010) 　　Filesystem label= 　　OS type: Linux 　　Block size=4096 (log=2) 　　Fragment size=4096 (log=2) 　　Stride=0 blocks, Stripe width=0 blocks 　　5439488 inodes, 21757952 blocks 　　1087897 blocks (5.00%) reserved for the super user 　　First data block=0 　　Maximum filesystem blocks=4294967296 　　664 block groups 　　32768 blocks per group, 32768 fragments per group 　　8192 inodes per group 　　Superblock backups stored on blocks: 　　32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 　　4096000, 7962624, 11239424, 20480000 　　Writing inode tables: done 　　Writing superblocks and filesystem accounting information: 　　done 　　This filesystem will be automatically checked every 23 mounts or 　　180 days, whichever comes first. Use tune2fs -c or -i to override. 　　[root@cn-iss-install-01 Packages]# 　　[root@cn-iss-install-01 Packages]# 　　[root@cn-iss-install-01 Packages]# mkf 　　mkfifo mkfs.cramfs mkfs.ext3 mkfs.ext4dev 　　mkfs mkfs.ext2 mkfs.ext4 　　[root@cn-iss-install-01 Packages]# mkfs.ext4 /dev/vg03/vgdata 　　mke2fs 1.41.12 (17-May-2010) 　　Filesystem label= 　　OS type: Linux 　　Block size=4096 (log=2) 　　Fragment size=4096 (log=2) 　　Stride=0 blocks, Stripe width=0 blocks 　　5439488 inodes, 21757952 blocks 　　1087897 blocks (5.00%) reserved for the super user 　　First data block=0 　　Maximum filesystem blocks=4294967296 　　664 block groups 　　32768 blocks per group, 32768 fragments per group 　　8192 inodes per group 　　Superblock backups stored on blocks: 　　32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 　　4096000, 7962624, 11239424, 20480000 　　Writing inode tables: done 　　Creating journal (32768 blocks): done 　　Writing superblocks and filesystem accounting information: done 　　This filesystem will be automatically checked every 37 mounts or 　　180 days, whichever comes first. Use tune2fs -c or -i to override. 　　[root@cn-iss-install-01 Packages]# 　　[root@cn-iss-install-01 spool]# mount /dev/vg03/vgdata /var/spool/repo/ 　　[root@cn-iss-install-01 spool]# cd repo/ 　　[root@cn-iss-install-01 repo]# ls 　　lost+found 　　[root@cn-iss-install-01 repo]# pwd 　　/var/spool/repo 　　[root@cn-iss-install-01 repo]# 　　3，常用检查命令： 　　[root@cn-iss-install-01 /]# pvdisplay 　　[root@cn-iss-install-01 /]# vgdisplay 　　[root@cn-iss-install-01 /]# lvdisplay 　　[root@cn-iss-install-01 /]# pvcreate 　　Please enter a physical volume path 　　Run `pvcreate --help' for more information. 　　[root@cn-iss-install-01 /]# vgcreate 　　Please provide volume group name and physical volumes 　　Run `vgcreate --help' for more information. 　　[root@cn-iss-install-01 /]# lvcreate 　　Please provide a volume group name 　　Run `lvcreate --help' for more information. 　　[root@cn-iss-install-01 /]# vgextend 　　Please enter volume group name and physical volume(s) 　　Run `vgextend --help' for more information. 　　[root@cn-iss-install-01 /]# lvextend 　　Please specify either size or extents but not both. 　　Run `lvextend --help' for more information. 　　[root@cn-iss-install-01 /]#
 　经验总结：
　　
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