linux 下lvm逻辑卷的铸造
| sical volume --- PV Name /dev/sda6 VG Name PV Size 494.16 MB Allocatable NO PE Size (KByte) 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID 3k3i3x-6MAs-cX5j-tXJY-790Y-JDCr-PQoI8c 创建卷组myvol1 [root@station23 ~]# vgcreate myvol1 /dev/sda5 /dev/sda6 Volume group "myvol1" successfully created [root@station23 ~]# vgdisplay myvol1 查看卷组创建情况 --- Volume group --- VG Name myvol1 System ID Format lvm2 Metadata Areas 2 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 2 Act PV 2 VG Size 984.00 MB PE Size 4.00 MB Total PE 246 Alloc PE / Size 0 / 0 Free PE / Size 246 / 984.00 MB VG UUID BDI2wz-XPuu-hZan-VpIu-H6tg-3zTk-Vhyu2x 创建逻辑卷lvm1 大小为300M [root@station23 ~]# lvcreate -L 300M -n lvm1 myvol1 Logical volume "lvm1" created [root@station23 ~]# lvdisplay lvm1 这里失败的原因的没写全路径 Volume group "lvm1" not found [root@station23 ~]# lvdisplay /dev/myvol1/lvm1 --- Logical volume --- LV Name /dev/myvol1/lvm1 VG Name myvol1 LV UUID 15mVY6-82LS-B39d-663P-Xrlf-p3Ju-cy3Mzp LV Write Access read/write LV Status available # open 0 LV Size 300.00 MB Current LE 75 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 [root@station23 ~]# mkfs -t ext3 /dev/myvol1/lvm1 格式化lvm1为ext3 mke2fs 1.39 (29-May-2006) Filesystem label= OS type: Linux Block size=1024 (log=0) Fragment size=1024 (log=0) 76912 inodes, 307200 blocks 15360 blocks (5.00%) reserved for the super user First data block=1 Maximum filesystem blocks=67633152 38 block groups 8192 blocks per group, 8192 fragments per group 2024 inodes per group Superblock backups stored on blocks: 8193, 24577, 40961, 57345, 73729, 204801, 221185 Writing inode tables: done Creating journal (8192 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 31 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override. [root@station23 ~]# mkdir -p /share/test 创建/share/test文件 [root@station23 ~]# vim /etc/fstab 设置lvm1 开机自动挂载 /dev/myvol1/lvm1 /share/test ext3 defaults 0 0 ~ ~ "/etc/fstab" 9L, 656C written 9,47-75 All 新建目录/share/test,设置其所属组为oinstall [root@station23 /]# mkdir /share/test [root@station23 /]# chown -R :oinstall /share [root@station23 /]# ls -ld /share/test/ drwxr-xr-x 2 root oinstall 1024 Feb 25 12:39 /share/test/ [root@station23 /]# ls -ld /share drwxr-xr-x 4 root oinstall 1024 Feb 25 12:39 /share [root@station23 ~]# mount /dev/myvol1/lvm1 /share 挂载lvm1至/share目录下 扩展逻辑卷lvm1的大小至500M,要求不能损坏其中的文件； [root@station23 test]# touch aa 新建aa文件,用于测试是否损坏了文件 [root@station23 test]# lvextend -L 500M /dev/myvol1/lvm1 /扩展lv逻辑卷500M 区分 500M Extending logical volume lvm1 to 500.00 MB Logical volume lvm1 successfully resized 成功标志 [root@st |
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