LVM大小修改和删除.doc

RHCE_LAB(6)RHEL5的LVM应用实例（LVM调整大小和删除） 2009-02-25 18:05:42 　标签：RHCE LAB RHEL5 LVM 应用实例　　　[推送到技术圈] 版权声明：原创作品，允许转载，转载时请务必以超链接形式标明文章 原始出处 、作者信息和本声明。否则将追究法律责任。/227050/133068 实验目的： ???????? 理解LVM（逻辑卷管理器），添加、删除和调整LVM大小。 实验环境： ???????? 操作系统：RedHat Enterprise Linux 5 （RHEL5） ?????????相关软件：lvm2-2.02.16-3.el5 ? 实验步骤： 注：在RHCE_LAB(6)中我们建立了3个PV分别是“/dev/hda5 /dev/hda6 /dev/hda7?” （RHCE_LAB(6)的内容参见[url]/227050/133041[/url]） 1. 增大LVM 为VG添加新的PV使其增加容量 [root@linux tmp]# vgextend vg1 /dev/hda7? Volume group vg1 successfully extended 显示VG信息 [root@linux tmp]# vgdisplay ? --- Volume group ---? VG Name?????????????? vg1? System ID???????????? ? Format??????????????? lvm2? Metadata Areas??????? 3? Metadata Sequence No? 8? VG Access???????????? read/write? VG Status???????????? resizable? MAX LV??????????????? 0? Cur LV??????????????? 1? Open LV?????????????? 1? Max PV??????????????? 0? Cur PV??????????????? 3? Act PV??????????????? 3? VG Size?????????????? 252.00 MB? PE Size?????????????? 4.00 MB? Total PE????????????? 63? Alloc PE / Size?????? 45 / 180.00 MB? Free? PE / Size?????? 18 / 72.00 MB? VG UUID?????????????? GOysUz-Fyeu-ttE0-R3UE-ra3Z-s1dM-l4QZ7n 为LV增加容量 [root@linux tmp]# lvextend -L +50M /dev/vg1/lv1 ? Rounding up size to full physical extent 52.00 MB? Extending logical volume lv1 to 252.00 MB? Logical volume lv1 successfully resized 显示LV信息[root@linux tmp]# lvdisplay /dev/vg1/lv1 ? --- Logical volume ---? LV Name??????????????? /dev/vg1/lv1? VG Name??????????????? vg1? LV UUID??????????????? PkCxki-KweE-AcpE-r1KO-cguR-mxUm-xvPP0n? LV Write Access??????? read/write? LV Status????????????? available? # open???????????????? 1? LV Size??????????????? 252.00 MB? Current LE???????????? 63? Segments?????????????? 3? Allocation???????????? inherit? Read ahead sectors???? 0? Block device?????????? 253:3 在线格式化新加的LV，让其可以正常使用 [root@linux tmp]# resize2fs /dev/vg1/lv1 resize2fs 1.39 (29-May-2006)Filesystem at /dev/vg1/lv1 is mounted on /tmp/lvm; on-line