2.3. LVM 逻辑卷
图 2.2. 扩展映射
VG1with a physical extent size of 4MB. This volume group includes 2 physical volumes named
PV2. The physical volumes are divided into 4MB units, since that is the extent size. In this example,
PV1is 100 extents in size (400MB) and
PV2is 200 extents in size (800MB). You can create a linear volume any size between 1 and 300 extents (4MB to 1200MB). In this example, the linear volume named
LV1is 300 extents in size.
图 2.3. 物理卷大小不同的线性卷
LV1, which is 250 extents in size (1000MB) and
LV2which is 50 extents in size (200MB).
图 2.4. 多逻辑卷