linux CentOS/redhat 6.5 LVM分区如何使用下载

 系统大全为您分享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，分享一个抽象的盘卷，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 /]#
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