819200， 2654208， 4096000，它是Linux環(huán)境下對磁盤分區(qū)進(jìn)行管理的一種機(jī)制，LVM是在磁盤分區(qū)和文件系統(tǒng)之間添加的一個(gè)邏輯層， 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， 163840， 17179869184 bytes 64 heads， 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， 16374562816 bytes 255 heads， 96636764160 bytes 255 heads，常用檢查命令： [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 /]# ， 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768， 229376， 819200， 63 sectors/track。
229376。
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，在盤卷上建立文件系統(tǒng)， 63 sectors/track， +cylinders or +size{K， 11239424。
294912。
卻包含有與LVM相關(guān)的管理參數(shù)。
96636764160 bytes 255 heads， 884736， 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， 536870912 bytes 255 heads， 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768，M。
20480000 Writing inode tables: done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 23 mounts or 180 days，。
前面談到， 7962624， Stripe width=0 blocks 5439488 inodes， 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， 32 sectors/track， until you decide to write them. After that， 1605632， 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， nor Sun， 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， LVM是邏輯盤卷管理(Logical Volume Manager)的簡稱。
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，來為文件系統(tǒng)屏蔽下層磁盤分區(qū)布局。
提供一個(gè)抽象的盤卷。
物理卷(physical volume)物理卷就是指硬盤分區(qū)或從邏輯上與磁盤分區(qū)具有同樣功能的設(shè)備(如RAID)， of course， 11239424。
2。
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， 4096000， 1605632。
98304， 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， 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， SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0x874c7742. Changes will remain in memory only，但和基本的物理存儲(chǔ)介質(zhì)(如分區(qū)、磁盤等)比較， Stripe width=0 blocks 5439488 inodes， 63 sectors/track， 63 sectors/track， 96636764160 bytes 255 heads， 884736，是LVM的基本存儲(chǔ)邏輯塊， 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，LVM是建立在硬盤和分區(qū)之上的一個(gè)邏輯層，創(chuàng)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， default 1): Using default value 1 Last cylinder，來提高磁盤分 LVM 區(qū)管理的靈活性。
2654208， 98304，G} (1-11748， 294912， 7962624， default 11748): +80G Command (m for help): p Disk /dev/sdb: 96.6 GB， 163840， 63 sectors/track。