Linux LVM 创建、删除、扩展

Linux LVM 创建 删除 扩展 redhat6 2上做LVM 1 先给虚拟机上的RH加一个硬盘 2 启动RH 3 在终端上输入 BeiGang localhost fdisk l Disk dev sdc 1073 MB 1073741824 bytes Disk dev sdc doesn t contain a valid partition table 4 分区1 BeiGang localhost fdisk dev sdc Command m for help n Command action e extended p primary partition 1 4 p Partition number 1 4 1 First cylinder 1 130 default 1 Using default value 1 Last cylinder cylinders or size K M G 1 130 default 130 100M Command m for help w The partition table has been altered Calling ioctl to re read partition table Syncing disks BeiGang localhost 5 查看 BeiGang localhost fdisk l Device Boot Start End Blocks Id System dev sdc1 1 14 112423 83 Linux 6 分区2 BeiGang localhost fdisk dev sdc n p 2 15 100M w 7 查看 BeiGang localhost fdisk l Device Boot Start End Blocks Id System dev sdc1 1 14 112423 83 Linux dev sdc2 15 28 112455 83 Linux 8 添加物理卷 BeiGang localhost pvcreate dev sdc1 Writing physical volume data to disk dev sdc1 Physical volume dev sdc1 successfully created BeiGang localhost pvcreate dev sdc2 Writing physical volume data to disk dev sdc2 Physical volume dev sdc2 successfully created BeiGang localhost 9 查看PV BeiGang localhost pvs PV VG Fmt Attr PSize PFree dev sdc1 lvm2 a 109 79m 109 79m dev sdc2 lvm2 a 109 82m 109 82m BeiGang localhost 10 创建卷组 BeiGang localhost vgcreate VG1 dev sdc1 dev sdc2 Volume group VG1 successfully created BeiGang localhost 11 查看卷组 BeiGang localhost vgs VG PV LV SN Attr VSize VFree VG1 2 0 0 wz n 216 00m 216 00m BeiGang localhost 12 创建逻辑卷1 BeiGang localhost lvcreate n lv1 L 50M VG1 Rounding up size to full physical extent 52 00 MiB Logical volume lv1 created BeiGang localhost 13 创建逻辑卷2 因为是PE 4M 的整数倍 所以没有上调 BeiGang localhost lvcreate n lv2 L 60M VG1 Logical volume lv2 created BeiGang localhost 14 查看逻辑卷 BeiGang localhost lvs LV VG Attr LSize Origin Snap Move Log Copy Convert lv1 VG1 wi a 52 00m lv2 VG1 wi a 60 00m BeiGang localhost 15 格式化lv1时报找不到该文件 BeiGang localhost mkfs ext3 dev VG1 lv1 16 挂载lv1 BeiGang localhost mount dev VG1 lv1 seconddisk 17 在文件夹seconddisk上生成文件 BeiGang localhost touch seconddisk 1 9 txt BeiGang localhost ll seconddisk total 23 rw r r 1 root root 0 Nov 8 14 06 1 txt rw r r 1 root root 0 Nov 8 14 06 2 txt rw r r 1 root root 0 Nov 8 14 06 3 txt rw r r 1 root root 0 Nov 8 14 06 4 txt rw r r 1 root root 0 Nov 8 14 06 5 txt rw r r 1 root root 0 Nov 8 14 06 6 txt rw r r 1 root root 0 Nov 8 14 06 7 txt rw r r 1 root root 0 Nov 8 14 06 8 txt rw r r 1 root root 0 Nov 8 14 06 9 txt drwx 2 root root 12288 Nov 8 13 51 lost found BeiGang localhost 18 删除 dev VG1 lv1 dev VG1 lv2 BeiGang localhost lvremove dev VG1 lv1 Can t remove open logical volume lv1 BeiGang localhost umount seconddisk BeiGang localhost lvremove dev VG1 lv1 Do you really want to remove active logical volume lv1 y n y Logical volume lv1 successfully removed BeiGang localhost BeiGang localhost lvremove dev VG1 lv2 Do you really want to remove active logical volume lv2 y n y Logical volume lv2 successfully removed 19 删除 dev VG1 BeiGang localhost vgremove dev VG1 Volume group VG1 successfully removed BeiGang localhost 20 删除物理卷 BeiGang localhost pvremove dev sdc3 Labels on physical volume dev sdc3 successfully wiped BeiGang localhost pvremove dev sdc2 Labels on physical volume dev sdc2 successfully wiped BeiGang localhost pvremove dev sdc1 Labels on physical volume dev sdc1 successfully wiped BeiGang localhost 值得说的一点是在做LVM时 文件类型不必是8e 83也可 具体见下面的Id BeiGang localhost fdisk l Device Boot Start End Blocks Id System dev sdc1 1 14 112423 83 Linux dev sdc2 15 28 112455 83 Linux 下面再在上面第17步完成后的基础上再对lv2做一个扩展 1 首先fdisk搞一个 dev sdc3 查看 BeiGang localhost fdisk l grep sdb dev sdc1 1 14 112423 83 Linux dev sdc2 15 28 112455 83 Linux dev sdc3 29 42 112455 83 Linux 2 增加pv失败 BeiGang localhost pvcreate dev sdc3 Device dev sdc3 not found or ignored by filtering 3 加载disc partation BeiGang localhost partx a dev sdc BLKPG Device or resource busy error adding partition 1 BLKPG Device or resource busy error adding partition 2 BeiGang localhost partx a dev sdc BLKPG Device or resource busy error adding partition 1 BLKPG Device or resource busy error adding partition 2 BLKPG Device or resource busy error adding partition 3 4 增加pv BeiGang localhost pvcreate dev sdc3 Writing physical volume data to disk dev sdc3 Physical volume dev sdc3 successfully created 5 扩展sdb3到vg BeiGang localhost vgextend dev VG1 dev sdc3 Volume group VG1 successfully extended BeiGang localhost 6 查看VG BeiGang localhost vgs VG PV LV SN Attr VSize VFree VG1 3 1 0 wz n 324 00m 272 00m VolGroup 1 2 0 wz n 19 51g 0 查看LV BeiGang localhost lvs LV VG Attr LSize Origin Snap Move Log Copy Convert lv2 VG1 wi a 52 00m 7 扩展lv BeiGang localhost lvextend L 50M dev VG1 lv2 Rounding up size to full physical extent 52 00 MiB Extending logical volume lv2 to 104 00 MiB Logical volume lv2 successfully resized BeiGang localhost 8 查看 BeiGang localhost lvs LV VG Attr LSize Origin Snap Move Log Copy Convert lv2 VG1 wi a 104 00m 9 挂载再查看 lv2只有51M 刚才扩展的还没有真正加上 BeiGang localhost mount dev VG1 lv2 mnt BeiGang localhost df h Filesystem Size Used Av