LVM磁盘划分
iZ94n1h2di9Z:~ # fdisk -l Disk /dev/hda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders, total 41943040 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0008620d Device Boot Start End Blocks Id System /dev/hda1 * 2048 41943039 20970496 83 Linux Disk /dev/xvdb: 536.9 GB, 536870912000 bytes 255 heads, 63 sectors/track, 65270 cylinders, total 1048576000 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/xvdb doesn't contain a valid partition table Disk /dev/xvdc: 53.7 GB, 53687091200 bytes 255 heads, 63 sectors/track, 6527 cylinders, total 104857600 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/xvdc doesn't contain a valid partition table iZ94n1h2di9Z:~ # pvcreate /dev/xvdb Physical volume "/dev/xvdb" successfully created iZ94n1h2di9Z:~ # pvdisplay "/dev/xvdb" is a new physical volume of "500.00 GiB" --- NEW Physical volume --- PV Name /dev/xvdb VG Name PV Size 500.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID vbM8CY-hIr8-qa7V-bMr3-77fI-yyAv-6RI1aF iZ94n1h2di9Z:~ # vgcreate vgdisk /dev/xvdb Volume group "vgdisk" successfully created iZ94n1h2di9Z:~ # vgdisplay --- Volume group --- VG Name vgdisk System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 1 VG Access read/write VG Status resizable MAX LV 0 Cur LV 0 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 500.00 GiB PE Size 4.00 MiB Total PE 127999 Alloc PE / Size 0 / 0 Free PE / Size 127999 / 500.00 GiB VG UUID SL5E0Z-B9hZ-xLWK-1OSP-C8hQ-8AIO-R7CaGC iZ94n1h2di9Z:~ # lv create -L 100G -n app vgdisk If 'lv' is not a typo you can run the following command to lookup the package that contains the binary: command-not-found lv -bash: lv: command not found iZ94n1h2di9Z:~ # lvcreate -L 100G -n app vgdisk Logical volume "app" created iZ94n1h2di9Z:~ # lvcreate -L 380G -n data vgdisk Logical volume "data" created iZ94n1h2di9Z:~ # lvdisplay --- Logical volume --- LV Name /dev/vgdisk/app VG Name vgdisk LV UUID uvRr5M-SAiV-B9A3-r3ei-F59D-lX39-XxrifI LV Write Access read/write LV Creation host, time iZ94n1h2di9Z, 2015-11-25 19:52:45 +0800 LV Status available # open 0 LV Size 100.00 GiB Current LE 25600 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 1024 Block device 252:0 --- Logical volume --- LV Name /dev/vgdisk/data VG Name vgdisk LV UUID W4f5wT-QuGc-gike-FRws-ocNI-vOEr-cjlmKl LV Write Access read/write LV Creation host, time iZ94n1h2di9Z, 2015-11-25 19:53:39 +0800 LV Status available # open 0 LV Size 380.00 GiB Current LE 97280 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 1024 Block device 252:1 iZ94n1h2di9Z:~ # cd /home iZ94n1h2di9Z:/home # ls iZ94n1h2di9Z:/home # cd /data -bash: cd: /data: No such file or directory iZ94n1h2di9Z:/home # cd / iZ94n1h2di9Z:/ # mkdir data iZ94n1h2di9Z:/ # cd /data iZ94n1h2di9Z:/data # ls iZ94n1h2di9Z:/data # mkfs -t xfs /dev/vgdisk/app meta-data=/dev/vgdisk/app isize=256 agcount=4, agsize=6553600 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=26214400, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=4096 blocks=12800, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 iZ94n1h2di9Z:/data # mkfs -t xfs /dev/vgdisk/data meta-data=/dev/vgdisk/data isize=256 agcount=4, agsize=24903680 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=99614720, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=4096 blocks=48640, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 iZ94n1h2di9Z:/data # mount /dev/vgdisk/app /home iZ94n1h2di9Z:/data # mount /dev/vgdisk/data /data iZ94n1h2di9Z:/data # df -k Filesystem 1K-blocks Used Available Use% Mounted on /dev/hda1 20641404 2227356 17365524 12% / udev 4095364 128 4095236 1% /dev tmpfs 4095364 220 4095144 1% /dev/shm /dev/mapper/vgdisk-app 104806400 32928 104773472 1% /home /dev/mapper/vgdisk-data 398264320 32928 398231392 1% /data iZ94n1h2di9Z:/data # mkfs -t xfs /dev/xvdc meta-data=/dev/xvdc isize=256 agcount=4, agsize=3276800 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=13107200, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=4096 blocks=6400, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 iZ94n1h2di9Z:/data # cd / iZ94n1h2di9Z:/ # mkdir db iZ94n1h2di9Z:/ # mount /dev/xvdc /db iZ94n1h2di9Z:/ # df -k Filesystem 1K-blocks Used Available Use% Mounted on /dev/hda1 20641404 2227360 17365520 12% / udev 4095364 128 4095236 1% /dev tmpfs 4095364 220 4095144 1% /dev/shm /dev/mapper/vgdisk-app 104806400 32928 104773472 1% /home /dev/mapper/vgdisk-data 398264320 32928 398231392 1% /data /dev/xvdc 52403200 32928 52370272 1% /db iZ94n1h2di9Z:/ #
最后将挂载信息写入挂载表，系统启动时自动挂载
/dev/hda1 / ext3 acl,user_xattr 1 1 proc /proc proc defaults 0 0 sysfs /sys sysfs noauto 0 0 debugfs /sys/kernel/debug debugfs noauto 0 0 usbfs /proc/bus/usb usbfs noauto 0 0 devpts /dev/pts devpts mode=0620,gid=5 0 0 /dev/vgdisk/app /home xfs rw 0 0 /dev/vgdisk/data /data xfs rw 0 0 /dev/xvdc /db xfs rw 0 0